Develop Bugs

Electrical question - charging - power

Hello everybody,
Since the best phone ever died (or better: drown) on me (HTC Universal OFCOURSE!). I had to look for a replacement and TP2 seemed like the best of bad things. LOL!
I noticed that the wall charger had a 5V -1A(mpere) output. My (standard) car charger has a 5V - 0,5 A output. So I got the notice "your current power supply... not enough ...close some ...."
Besides the fact that e.g. tomtom uses more than the charger can give, i was wondering :
is it BAD for my battery charging at 0,5A instead of 1A ?
how much A does a laptop give when charging my TP2 trough USB port?
HAs this got sth to do with the fact that in some programs there is an option like "do not charge while connected to PC?"
I know this is more of an offtopic question, but I hope there is somebody with enough electrical knowledge to help me out! I posted it also in the general section, but since it is an TP2 issue maybe it is better placed here.
Sorry for possible inconvenience!
THX!
Kjoere

Each USB port churns out 5V at 500mA max (i.e., 0.5A).

Thank you mesquire,
Do you have any idea what the effect is of charging with different AMpere?
E.g. my BT-earphone has 180mA - so better not charge this through laptop I suppose (too much is never a good thing) - but the otherway charging with less A, that I haven' got a clue ...
C.

You can face problems that it starts to charge, but stops after x minutes.
I have replaced my carcharger with the original HTC CC C100 which delivers 1Amp.
Never had any charging problems with that one.

Hi ronh,
replacing is ofcourse an option, but I was mainly wondering what the possible effects could be on the battery. On a Dutch site I found that Lithium-Ion batteries have no memory effect so all ampères below should be "theoretically" be ok.
Greetz,
C.

Curehead said:
Thank you mesquire,
Do you have any idea what the effect is of charging with different AMpere?
E.g. my BT-earphone has 180mA - so better not charge this through laptop I suppose (too much is never a good thing) - but the otherway charging with less A, that I haven' got a clue ...
C.
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Click to collapse
You can expect longer charge times through USB port than with the supplied charger.
A USB flash drive draws only about 100mA from the port, so the port should provide just enough power to charge your Bluetooth handsfree (but do make sure the device needs 5V to operate or you could fry it).

Hi mesquire,
thanx again, but I am still in the dark. You seem to make a difference between a USB port (500mA) and a USB flash drive (100mA), but i don't understand this (maybe my english isn't good enough ).
Do i understand you correctly is i say that the device connected also has sth to say in how much power comes out?
I thought the ampere is sth like a 'flow of current' and when more comes out than wanted by the receiver, it euh likes ... flood (too much current) the device (and does damage). Does this make any sense?
Ciao,
Kjoere

Your device will only pull the amount of amps required,
as long as the input voltage is the same you should be fine.
you will be OK to charge the phone at 500ma however this will take longer to charge,
I charge mine using my laptop regularly - that matches your car charger at 500ma,
you may find however, when using gps etc, that you are draining more power than being supplied by the charger and the battery will begin to discharge.
hope this makes sense,
Steve

Curehead said:
Hi ronh,
replacing is ofcourse an option, but I was mainly wondering what the possible effects could be on the battery. On a Dutch site I found that Lithium-Ion batteries have no memory effect so all ampères below should be "theoretically" be ok.
Greetz,
C.
Click to expand...
Click to collapse
they do have a memory, but the software/charger will not let you damage the battery.
anyway, assuming the battery can be charged at 1C (up to 2C is possible with some batteries, but can adversely affect battery life) you can theoretically charge the battery at a maximum of 1.5 amps safely. (assuming 1,500Mah battery)

TP2 doesn't have li-ion, it's a LiPo which doesn't have memory. They do have a limit on how many times they recharge as well as a shelf life, figure on buying a replacement every 1-2 years I'd guess.

fraser said:
TP2 doesn't have li-ion, it's a LiPo which doesn't have memory. They do have a limit on how many times they recharge as well as a shelf life, figure on buying a replacement every 1-2 years I'd guess.
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are you sure ?? i went to the power settings and it says main battery: Li-ion
which i presume stands for lithium ion ?

Lithium Ion doesn't have memory.
Nickel Cadmium and Nickel MetalHydride have meory: i.e. if you charge it when it's at 70%, the next time it gets down to 70% it will think it's empty as it "remembers" that as the charging point.
With Lithium Ion you can charge them at any moment, ergo no charge. Adn they too have a life of about 500 charges.

fraser said:
TP2 doesn't have li-ion, it's a LiPo which doesn't have memory. They do have a limit on how many times they recharge as well as a shelf life, figure on buying a replacement every 1-2 years I'd guess.
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Click to collapse
The battery in my TP2 says LI-ION on the back, so perhaps some are LI-Po and some LI-ion? may go some way to explaining why some people are happy with their battery life and some not so.
Tom

Shouldn't really matter truth be told. As long as they have a rating of 1500mah they should last the same amount.

frogfoot said:
The battery in my TP2 says LI-ION on the back
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Are you sure it doesn't say "Li-ion Polymer"? There is a distinction, particularly in cost!

fraser said:
Are you sure it doesn't say "Li-ion Polymer"? There is a distinction, particularly in cost!
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Click to collapse
my australian TP2 says Li-ion in big letters, and Li-ion Polymer in the fine print

The difference is in cost, and weight, but the end result in a cell phone or pda is more or less the same due to the low power demands.

My TP2 battery says Li-ion on the actual label itself.

thanx
rosebud said:
Your device will only pull the amount of amps required,
as long as the input voltage is the same you should be fine.
you will be OK to charge the phone at 500ma however this will take longer to charge,
I charge mine using my laptop regularly - that matches your car charger at 500ma,
you may find however, when using gps etc, that you are draining more power than being supplied by the charger and the battery will begin to discharge.
hope this makes sense,
Steve
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Hi Steve,
Thx man! So now i Know i only have to worry about voltage. So I can charge my earphone in my car (which only wants 180mA) and my phone (1A). You are right that it sometimes (navigation, BT) uses more power than it gets (500mA), I get some message saying that by the way.
Any way thanx a lot !
Cureheaded

Project: Wiring two batteries together

I recently got a Seido extended battery case and I thought I could fit two regular batteries in order use one battery and have another battery there in the unit as a spare. As I thought about this however, why beat the bush?
Why not think of a way to connect the two batteries with a piece of electrical tape and have a cheap ~$6 3000mah battery. Thoughts?

Well..you could always wire the contacts together, that way the contacts on the phone hit both of them at the same time. However, you would have to worry about over powering the phone (too much current to it). So..probably wouldn't be worth it. However, if you have insurance you could always try it...

I actually thought of this before and was about to run to radioshack when I ran into a snag....
I was going to wire them up using a relay so when there was no charge on the original battery it would auto switch to the other. E.g. only one battery connected at a time.
Problems:
1. Phone would shutdown when the relay switched, not too big of an issue as you would just turn phone back on.
2. I think phone would shut off before relay would switch, due to Android turning phone off before battery is truely dead
3. Charging would be an issue due to relay
4. All the relays I found were pretty big
As far as wiring two batties at once to increase capacity. There's only 2 ways to do it:
1. Parralell (Wiring + to + and - to - and one battery entirely to load) which will end up with the same voltage as one battery but twice the amps!
2. Series (wiring - from one battery to load, + from other battery to load, then remaining - and + together) which will double the volts but the amps will be the same!
P.S. I'm not a licensed electrician...

Well ur gonna have to do alot of thinking. What ur gonna have to do is hok up 2 battery's to 1 circuit board otherwise you will blow up the battery's and fry your phone. So be careful and solder right. Do a good job and don't mess it up completely.
Sent from my PC36100 using XDA App

Kept thinking about it and here is the easiest way to do it...and the reasoning why it will work.
1. If you are to do it you will need 2 identical batteries. Same make, model, and age...preferably new. Otherwise one will degrade.
2. Running in parallel WILL double mAh or discharge rate. I didn't think so at first but it will.
3. Since we can't supply the phone with more volts than it can handle we cannot wire the batteries in series.
4. So we must wire them in parallel, this will double batteries mAh, volts will remain equal to one battery, and double the amps.
5. Doubling the amps should not hurt phone as it will only use what it needs. It is bad to have less amps but not more.***
So, according to my original battery specs if I were to wire two together the end result would be:
3000mAh 3.7V @ 2A
To my knowledge this should work fine.
There is only 2 things that should be verified by an electrician - i.e. not me.
***1. I know more amps is OK, but doubling them I am not sure about. The phone SHOULD only draw at 1A regardless.
2. Charging with the batteries connected together should be OK, this is why I said to make sure their identical. But I would still recommend charging them separately as this is where most damage can be caused to batteries.

You would be fine with them in parallel, amperage is a nonissue as amps are pulled not pushed, charging I'm not sure about I don't know how the charging circuit works in these phones.
Ps I am a licensed electrician

If you ever take one of those cheap Chinese 3500 mah batters apart its just two smaller batteries hooked together and wrapped up.

Well that is all any battery is, a groping of cells. And the cells inside of a single battery are paired to match the exact specs the phone requires.
P.S. I actually have another battery on its way in the mail. I had my warranty send me one so I have a spare. If it is identical to my current one, which it should be, I will test this idea out.

Wouldn't it be easier to order an extended battery with the battery cover from eBay for like $7.50 delivered? Or is this something you wanna do just to see if you can? I don't see why anyone would take the risk of blowing up their phone for this.

rugedraw said:
Wouldn't it be easier to order an extended battery with the battery cover from eBay for like $7.50 delivered? Or is this something you wanna do just to see if you can? I don't see why anyone would take the risk of blowing up their phone for this.
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Click to collapse
More or less just to do it, and I have warranty with no down payment so I can get new phone.

rugedraw said:
Wouldn't it be easier to order an extended battery with the battery cover from eBay for like $7.50 delivered? Or is this something you wanna do just to see if you can? I don't see why anyone would take the risk of blowing up their phone for this.
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This ^
Why spend the time and risk damaging your phone?
I can understand the curiosity, as this has crossed my mind before as well, but i figured it simply wasn't worth the time/money/effort

dowmace said:
You would be fine with them in parallel, amperage is a nonissue as amps are pulled not pushed, charging I'm not sure about I don't know how the charging circuit works in these phones.
Ps I am a licensed electrician
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Click to collapse
I'm an electrical engineer and this is correct. The circuit (phone) will draw the amperage needed to run regardless of capacity.
This is the same deal if you get a laptop charger. If your laptop takes 12VDC at 5A and you use a 12VDC that is capable of 12A, you won't hurt your laptop, as the laptop will only pull 5A max from the charger. If you use a 14VDC at 5A you will probably fry something on your mainboard.
Similarly, if your phone takes a 5V .5A charger and you use a 5V 1A you don't fry your phone.

[Q] What charger to use. Make your battery last longer.

Hello,
As the battery can not be removed I am investigating the ways to make it live the long as I can. One is making your daily use long a lot, dissabling wifi, 3g or things you dont use.
The other way, the like I want to discuss here, is how to make proper charges. Actually, LG support two types:
- USB, at 500mA
- Wall charger (the one from LG), at 1200mA as it says.
I have investigated and read the less mA, the better for your battery, altought it takes longer to arrive to 100% charge.
So, the first question that comes to my mind is: when I like to use a wall charger, shouldn't it be better to use another wall charger with less mA? I own a Samsung charges that says 700mA so maybe it could be better to use it.
Do you think is a good idea?
What the best way to charge battery in order to give it a long live? Is it better to always charge it with pc-usb?
Thanks.
Fer

Use the original charger the phone came with.using other chargers,with different specs,may damage the battery on long terms.
Using a charger with lower intensity(700mAh) will charge the battery slower and for a while it will look like the battery will last longer,but in time it will affect the battery.
Using a higher intensity charger(1500 mAh for example),will charge the battery faster,but in time it will also affect the battery.
Best way is to make complete cycles of discharging/charging,avoid using the phone while is charging.
This is for the battery health.
To increase daily battery life,deactivate auto sync,set weather sync to min 1h,turn off fps/data/wi-fi when you don't need them.
The battery on the phone is guaranteed for about 850 cycles.so,even if you charge the phone every day,you have more than 2 years warranty for the battery to work on parameters.
Then,why worry that much?
Sent from LG E975 pwd by CM 10.1

kimitza said:
The battery on the phone is guaranteed for about 850 cycles.so,even if you charge the phone every day,you have more than 2 years warranty for the battery to work on parameters.
Then,why worry that much?
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Because I want my device last more than two years. My last phones last near four years each one. it will be a pitty if I had to forget a good phone only because battery is age-worn.
Given that you propose only charginr with original charger (with make sense to me), what about USB-PC port charge? it is better to use one or the other? both methods are supported by LG and mentioned in the manual, and supposed one of them would be desirable.

Nope,it's better to avoid charges fom usb.in fact,if you have files to copy to/from pc,after you finish i recommend to plug it out.
And those 850 cycles i mentioned are not the end of the battery.it means the battery will keep it"s properties.in time,it's normal for any electric/electronic component to show signs of fatigue.anyway,2+ years for a battery it's great.technology is evolving.you didn't mention,your last phone you had for 4 years,with same battery?and it was in the same parameters?well,it's hard to believe.
Sent from LG E975 pwd by CM 10.1

kimitza said:
Nope,it's better to avoid charges fom usb.in fact,if you have files to copy to/from pc,after you finish i recommend to plug it out.
And those 850 cycles i mentioned are not the end of the battery.it means the battery will keep it"s properties.in time,it's normal for any electric/electronic component to show signs of fatigue.anyway,2+ years for a battery it's great.technology is evolving.you didn't mention,your last phone you had for 4 years,with same battery?and it was in the same parameters?well,it's hard to believe.
Sent from LG E975 pwd by CM 10.1
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what is the "scientific" or "logical" reason to prefer the wall charger to usb-pc? I read it before it is better to charge into usb because 500mA are better for battery, less heat altought it takes longer to arrive to 100%.
My SGS last near 4 years, and I mainly I charged it from usb 50% and official charger 50%, and with Llama (and manually) I was very stricted in what features I turn on and off. In fact the battery and the phone is still in use for other person and the battery "looks" like the first use.

Well,it's not empirical,it's science.maybe i don't know how to put it in english that good,but i'll try.
As we all know,the electricity is measured within some parameters : tension(volts),in intensity(amps) and frequency(herz).
In your case,the wall charger provides 5 volts at the intensity of 1200 miliamps per hour.this is the standard value,made by lg for the g battery.if you provide less than half of that specified intensity(500mAh),the battery will charge alot slower,and it will "struggle" to align the electrons onto the battery layers.you shouldn't have a difference higher than 20%.for a period,it will look like the battery will last longer,but in the same time it will lose it's properties faster than the normal charging.
Today,batteries are not simple electric storages,but smart components themselves.if you mess up their function parameters,you will notice it in time.
Sent from LG E975 pwd by CM 10.1

kimitza said:
Well,it's not empirical,it's science.maybe i don't know how to put it in english that good,but i'll try.
As we all know,the electricity is measured within some parameters : tension(volts),in intensity(amps) and frequency(herz).
In your case,the wall charger provides 5 volts at the intensity of 1200 miliamps per hour.this is the standard value,made by lg for the g battery.if you provide less than half of that specified intensity(500mAh),the battery will charge alot slower,and it will "struggle" to align the electrons onto the battery layers.you shouldn't have a difference higher than 20%.for a period,it will look like the battery will last longer,but in the same time it will lose it's properties faster than the normal charging.
Today,batteries are not simple electric storages,but smart components themselves.if you mess up their function parameters,you will notice it in time.
Sent from LG E975 pwd by CM 10.1
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Kimitza, thank you very much for your support. One more question?. What specifications do you recomend for a car charger? (having in mind I don't use the smarthphone in the car, excep for GPS-maps sometimes. Most time I only charged it)
I have seen in the shop there a vary range of car charges that goes from 750mA to 2100mA.
And other one: is it advisable to use the device while charging?

I have an energizer car charger,rated at 1000mAh.
So,anything between 850-1300mAh should be ok.
My advice is not to charge the phone while using it in car,especially as gps,unless you have to.why?let's see,using the gps will cause the phone to heat more than usual.another heating reason,i'm sure you have a car mount sticked to the front glass of the car,exposed to direct sun.add to these 2 reasons the heat created by the charging itself and you will have yourself a veeeery hot optimus g.oh,forgot about the case.if you have one,especially silicon case,you'll end up with a frying pan.
If you can eliminate some of those heating sources,it would be great.
I found a car mount fitting on an AC blow hole.it's handy in the summer time.for winter,i stick my normal mount on front glass.
On long trips i try to avoid using it as gps when i'm on the highway.i use only in cities.
I remove the silicon case to provide extra air.
And,if i use as gps,i don't charge it.i plan my trip in such way i charge the phone while i'm on highway(if needed of course).i never spent that much time in car wondering in major cities to empty my phone.
Only if i really must i charge the phone while using it.
Feel free to follow or not my guide.
But i think it makes sense.
Sent from LG E975 pwd by CM 10.1

I like your advices. I was also asking if you use the phone while in wall-charging??
thanks

Sometimes i do,but,like i said, i try to avoid it. Depending on the activity.
Sometimes i find myself searching for the plug when i'm caught in a game and i want to continue )..
But this phone gave the beste ratio gaming/battery i saw . One day i played 4.5 hrs of Real Racing 3,before charging the phone.So,it's great.
I was so into that game i didn't wanted to end,so yea, i played while charging.Just don't make a habbit out of it .
And sometimes you can't use the phone without charging it....for example,when i play a movie on my 32" tv. The mhl adapter will not work without the phone pluged.

V= 5V. Current does not matter, on "charger" is max current. It should be mentioned, that thing we are calling charger is actually an adapter. Charging unit will take needed current, so do not talk stupidity, all of you have no idea about basics of electro-technics

cickvoa said:
V= 5V. Current does not matter, on "charger" is max current. It should be mentioned, that thing we are calling charger is actually an adapter. Charging unit will take needed current, so do not talk stupidity, all of you have no idea about basics of electro-technics
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but the question was not what current is needed, but what is the ideal current (charging velocity) in order to make battery life last longer. what is your opinion ?

cickvoa said:
V= 5V. Current does not matter, on "charger" is max current. It should be mentioned, that thing we are calling charger is actually an adapter. Charging unit will take needed current, so do not talk stupidity, all of you have no idea about basics of electro-technics
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Well,another specialist.I never mentioned the Voltage,which is the same for almost all mobile devices.I was talking about intensity,this makes the difference. And since you mentioned it, it's not just an adapter,it's more,because this piese of electronic equipment CONVERTS one kind of electricity(alternative current),with some specs(110-220V), to another kind of electricity(dirrect current),with other specs(5V). All this, guess what,to provide enough DC to CHARGE the battery.the standard in mobile industry has been set to 5V on wall chargers and 3.7 V output batteries.
These are the most common and used. The difference is made by the capacity of the batteries and the capability of chargers to supply an amount of electric intensity in a period of time. Again, the standard has been set to mAh,which is milliamps per hour. So,to be exact, a charger rated 5v - 1200mAh will provide a 5V current,at 1200 milliamps per hour.
On the other hand,the battery specs say : 3.7 V, 2100 mAh. This means the battery can provide an output current of 3.7V, at the max intensity of 2100mAh. Didn't measured the G max consumption, but i can tell you for sure, the maximum intensity used by my previous Galaxy note was 800 mAh,on some heavy gaming. And this measurement was made in a lab,with proper tools.You can do an estimative measurement home quite easy,but not that accurate,just to have an idea. How?Well, charge the battery to full, then start an app, a game. play that game until the battery is empty,then make a simple math(battery capacity / time) .It's not the most accurate result,but....
You said the charging unit will take the needed current,right?Who said something else?I said there are differences in charging times,caused by the ELECTRIC INTENSITY.If you say it doesn't matter,because it's all 5V tension,then i guess i could extrapolate and say Amazon river and a mountain spring it's the same for you,because they both are flowing waters,right?It doesn't matter all other parameters,just the flow.
I could go more into details and i'm not a specialist.I just like to know how things are working,just to satisfy my curiosity. I have alot of electronic tools/gadgets, i have my own semi-proffesional soldering station,professional digital multimeter and more. I could say new generation batteries have their own processing unit,making them smart batteries(that's why you can't just exchange batteries from one phone to another,although they have same specs).I could also say Li-Ion and Li-Po batteries are charged by impulses and not real DC.But these are details,and no one here cares about them.They just want to know the basics on how to get a better battery life and how to proper use them.
And since we don't know the basics of electro-technics,could you share your vaste knowledge,but without copy-pasting it from wiki?

Addapter is voltage source. Charging unit is inside mobile phone and it takes amout of current what it needs, ofc has max current limit. When u have voltage source, only way to control current is by resistance that is connected on it. That is.ohms law, basic of electric. Engineers who designed and made charging unit knows their job. Period
Sent from my LG-P880 using Tapatalk 2

only voltage?care to do a small experiment?I could provide you a 5v adapter with 10 amps intensity. will you plug it into your phone?Just for the fun of learning?

Yes i would. Because adapter IS VOLTAGE SOURCE, so voltage is constant, and current depends on resistant attached to adapter.
If you would give me CURRENT SOURCE of 10A than I wouldnt connect it, because there is constant current and variable voltage. Pls do not go further, your post shows that this is not your area of knowledge.
Just as notice, Im master if science in EE, in which these types of adapters which is use for mobile phones is basic of industrial electronic, so......
Edit: your big post shows that you dont understand electrotechnic, when i come home on a computer ill give you detail review of your post and mistakes
Sent from my LG-P880 using Tapatalk 2

cickvoa said:
Yes i would. Because adapter IS VOLTAGE SOURCE, so voltage is constant, and current depends on resistant attached to adapter.
If you would give me CURRENT SOURCE of 10A than I wouldnt connect it, because there is constant current and variable voltage. Pls do not go further, your post shows that this is not your area of knowledge.
Just as notice, Im master if science in electric motor drives and automation, in which these types of adapters which is use for mobile phones is basic of industrial electronic, so......
Edit: your big post shows that you dont understand electrotechnic, when i come home on a computer ill give you detail review of your post and mistakes
Sent from my LG-P880 using Tapatalk 2
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Please, also post your opinion about what is the best specifications for "wherever you call it the charger" for prolong battery life. The max A I suppost mark a limit for the phone, if current max is below the ideal charging value the that charger would be worse. Or any charger is OK?

I will im drinking now lol hehe, no prob, just spoke with friend, he has MD in electronics
Sent from my LG-P880 using Tapatalk 2

kimitza said:
Well,another specialist.I never mentioned the Voltage,which is the same for almost all mobile devices.I was talking about intensity,this makes the difference. And since you mentioned it, it's not just an adapter,it's more,because this piese of electronic equipment CONVERTS one kind of electricity(alternative current),with some specs(110-220V), to another kind of electricity(dirrect current),with other specs(5V).
Click to expand...
Click to collapse
First of all, why are you mentioning intensity?
Second, “direct current with 5 V specs“. Man, you got totally wrong there.
kimitza said:
All this, guess what,to provide enough DC to CHARGE the battery.the standard in mobile industry has been set to 5V on wall chargers and 3.7 V output batteries.
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„provide enough direct CURRENT … to set to 5 V“. you are doing it again sir, VOLTAGE is measured in VOLTS, CURRENT is measured in AMPERS !!!!!
Second, you must have larger potential form charger to battery, because current wouldn’t flow. Since max battery has 4,2V, it is set to 5V (don’t know why 5, but it is bigger than 4,2)
third, 3,7V is not standard, it is potential difference on Lithiom batteries, as it is 1,5V on CoZn batteries (usual called "Alkaline" or 1,2V on Ni-Mh or Ni-Cd batteries
kimitza said:
These are the most common and used. The difference is made by the capacity of the batteries and the capability of chargers to supply an amount of electric intensity in a period of time. Again, the standard has been set to mAh,which is milliamps per hour. So,to be exact, a charger rated 5v - 1200mAh will provide a 5V current,at 1200 milliamps per hour.
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Standard with mAh is wrong, Wh (watthour) is more correct, but OK, lets go with mAh.
Second, since we are talking about mAh's, mAh is measuring unit for capacity. If you find me charger that can store 1200mAh of capacity good for you (it is called battery, to be precise)
kimitza said:
On the other hand,the battery specs say : 3.7 V, 2100 mAh.
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Again, Li-ion cell at full charge is around 4,2 V and „empty“ is around 3,4 V.
kimitza said:
This means the battery can provide an output current of 3.7V, at the max intensity of 2100mAh.
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Again, totally noob. Sir, V O L T S are for V O L T A G E, A M P E R S are for C U R R E N T, M I L I A M P E R H O U R S are for C A P A C I T Y !!!!!!! If you tell sentence like that to some specialist, he/she would start to LOL to you. If you tell that on some exam, believe me, you wouldn’t pass this year.
kimitza said:
Didn't measured the G max consumption, but i can tell you for sure, the maximum intensity used by my previous Galaxy note was 800 mAh,on some heavy gaming. And this measurement was made in a lab,with proper tools.You can do an estimative measurement home quite easy,but not that accurate,just to have an idea. How?Well, charge the battery to full, then start an app, a game. play that game until the battery is empty,then make a simple math(battery capacity / time) .It's not the most accurate result,but....
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Bad sentence… only thing you can measure from battery is voltage and currently current. Other, such as mAh, you can calculate. For ex. If you say that during 1 h of measuring average current was 800mA, than you can say, OK my battery gave me 800mAh. Period. If you want to be more precise, or say it in correct measuring units, that you go like this: “my battery gave me 800mA in 1 h. OK, I have 800mAh. BUT, my battery is rated to 3,7 V (average voltage), than you say OK, capacity of this battery is 800mAh*3,7V=2,96mAhV. Since electric power in DC systems is calculated as P=U*I (in watts), so W=V*A, you say that battery has 2,96Wh of capacity.”
Then you look at battery (my O4X) and look, it is written “2150 mAh/8,2Wh”. LG made this good
kimitza said:
You said the charging unit will take the needed current,right?Who said something else?I said there are differences in charging times,caused by the ELECTRIC INTENSITY.If you say it doesn't matter,because it's all 5V tension,then i guess i could extrapolate and say Amazon river and a mountain spring it's the same for you,because they both are flowing waters,right?It doesn't matter all other parameters,just the flow.
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Again, volts and stuff, you do not have idea what are you talking about
kimitza said:
I could go more into details and i'm not a specialist.
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Yes, I could tell that by reading first few words of your post mister
kimitza said:
I just like to know how things are working,just to satisfy my curiosity. I have alot of electronic tools/gadgets, i have my own semi-proffesional soldering station,professional digital multimeter and more. I could say new generation batteries have their own processing unit,making them smart batteries(that's why you can't just exchange batteries from one phone to another,although they have same specs).I could also say Li-Ion and Li-Po batteries are charged by impulses and not real DC.But these are details,and no one here cares about them.
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Correct Liions are charged in impulses. BUT adapter does not provide impulses on its output, it provides 5V (as it is voltage source) and current [0, RATED] A. (those [] means that 0 and rated are included, in case you do not know math too, and that is called interval)
For impules, there is charging unit inside phone.
kimitza said:
They just want to know the basics on how to get a better battery life and how to proper use them.
And since we don't know the basics of electro-technics,could you share your vaste knowledge,but without copy-pasting it from wiki?
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Click to collapse
Wiki...well, you could read it a little, on en.wiki infos are correct, ive checked.
you have some bad attitude. but i understand, attack is the best defence. Enjoy your studying a little and do not embarrass yourself anymore. It is not problem if you do not know, okay, but if you are forcing me, and have no idea abaut basics (such as measuring units), cmon mister. do your homework.
Okay, this is review of your post. I am little hangovered, so if I sound a little uninterested or rough, forgive me
now, lets talk little about basics. Im not in the mood to write equasions and upload some schemes, so ill just put it on paper by hand and upload.
View attachment sl002.rar

cickvoa said:
First of all, why are you mentioning intensity?
Second, “direct current with 5 V specs“. Man, you got totally wrong there.
„provide enough direct CURRENT … to set to 5 V“. you are doing it again sir, VOLTAGE is measured in VOLTS, CURRENT is measured in AMPERS !!!!!
Second, you must have larger potential form charger to battery, because current wouldn’t flow. Since max battery has 4,2V, it is set to 5V (don’t know why 5, but it is bigger than 4,2)
third, 3,7V is not standard, it is potential difference on Lithiom batteries, as it is 1,5V on CoZn batteries (usual called "Alkaline" or 1,2V on Ni-Mh or Ni-Cd batteries
Standard with mAh is wrong, Wh (watthour) is more correct, but OK, lets go with mAh.
Second, since we are talking about mAh's, mAh is measuring unit for capacity. If you find me charger that can store 1200mAh of capacity good for you (it is called battery, to be precise)
Again, Li-ion cell at full charge is around 4,2 V and „empty“ is around 3,4 V.
Again, totally noob. Sir, V O L T S are for V O L T A G E, A M P E R S are for C U R R E N T, M I L I A M P E R H O U R S are for C A P A C I T Y !!!!!!! If you tell sentence like that to some specialist, he/she would start to LOL to you. If you tell that on some exam, believe me, you wouldn’t pass this year.
Bad sentence… only thing you can measure from battery is voltage and currently current. Other, such as mAh, you can calculate. For ex. If you say that during 1 h of measuring average current was 800mA, than you can say, OK my battery gave me 800mAh. Period. If you want to be more precise, or say it in correct measuring units, that you go like this: “my battery gave me 800mA in 1 h. OK, I have 800mAh. BUT, my battery is rated to 3,7 V (average voltage), than you say OK, capacity of this battery is 800mAh*3,7V=2,96mAhV. Since electric power in DC systems is calculated as P=U*I (in watts), so W=V*A, you say that battery has 2,96Wh of capacity.”
Then you look at battery (my O4X) and look, it is written “2150 mAh/8,2Wh”. LG made this good
Again, volts and stuff, you do not have idea what are you talking about
Yes, I could tell that by reading first few words of your post mister
Correct Liions are charged in impulses. BUT adapter does not provide impulses on its output, it provides 5V (as it is voltage source) and current [0, RATED] A. (those [] means that 0 and rated are included, in case you do not know math too, and that is called interval)
For impules, there is charging unit inside phone.
Wiki...well, you could read it a little, on en.wiki infos are correct, ive checked.
you have some bad attitude. but i understand, attack is the best defence. Enjoy your studying a little and do not embarrass yourself anymore. It is not problem if you do not know, okay, but if you are forcing me, and have no idea abaut basics (such as measuring units), cmon mister. do your homework.
Okay, this is review of your post. I am little hangovered, so if I sound a little uninterested or rough, forgive me
now, lets talk little about basics. Im not in the mood to write equasions and upload some schemes, so ill just put it on paper by hand and upload.
View attachment 2044470
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Click to collapse
cickvoa, thank you very much for your contribution, opinion and paper. Very valuable.

Couple Battery Questions

Got 2 new batteries and I want to keep them for a while, so I have a few questions:
1. Is the OEM fast-charge charger and cable okay to use every day, or will it degrade the battery faster than a slower/regular speed charger/cable?
2. Since I have 2 batteries now, which is the best way to charge them both up? charge 1 in the phone, then swap and charge the other in the phone? Or buy a battery charger (and if so, which one)?
3. Any other helps regarding the chargers and/or cables?​Thank you for your help.

Faster charging will always generate more heat and put more stress on the battery, so slower charging would be better for a battery's lifespan, but I don't think you'll see a huge difference within two years.
By far the fastest way to keep going is having the second battery charged in an external battery charger and then swap when the other battery gets low, followed by charging the low battery in the external charger. Doing it this way also puts the least wear-and-tear on the phone's charging port since you'll rarely use it. I use LG's OEM external battery charging cradle (BCK-5200), but it may be hard to find nowadays. There's currently a used one up for sale in an auction by an American seller on eBay, and there are new ones from a South Korean seller for a higher fixed price. I wouldn't pay more than $25 for one. As for charging time, for me, it takes about 4 hours to charge my MaxxxJuice 4100 mAh batteries from ~5–10% to full. External chargers do not fast-charge, so you'll never put too much stress on the battery that way. Of course, swapping may not be for everyone as it may be inconvenient to take a case off and put it back on.
Unlike the older microUSB cables, bad USB Type-C cables that are not built to certain specifications can draw higher currents and destroy the devices they are charging. A few years ago, a Google engineer reviewed lots of USB-C cables on Amazon to give his view on those. If you need a third-party cable, make sure you get one from a reputable source with good reviews. My preferred USB cable is Anker's Powerline+ due to their extra strength/thickness, and I don't need much flexibility/twistability in my cables. Also, I like how the USB-C end connector is made of one single piece where you don't see any connecting lines around the middle (you can see an example here).
Other thoughts:
As long as there is a supply of extra batteries around and you can afford to buy them when the time comes, then you shouldn't worry much about how you charge your phone. In my opinion, that is one of the main selling points of having a hand-removable battery. I imagine a paranoid person on a phone with a sealed battery would be trying to keep the battery level between 40 and 80% at all times. So really, the only thing to worry about is having a decent USB-C cable and making sure the phone's charging port is clean and not worn out.
In case you are really interested on my detailed charging habits and related things on my V20, I discussed them while reviewing my batteries a while back on the V20 Subreddit.

Thanks!

C D said:
Faster charging will always generate more heat and put more stress on the battery, so slower charging would be better for a battery's lifespan, but I don't think you'll see a huge difference within two years.
By far the fastest way to keep going is having the second battery charged in an external battery charger and then swap when the other battery gets low, followed by charging the low battery in the external charger. Doing it this way also puts the least wear-and-tear on the phone's charging port since you'll rarely use it. I use LG's OEM external battery charging cradle (BCK-5200), but it may be hard to find nowadays. There's currently a used one up for sale in an auction by an American seller on eBay, and there are new ones from a South Korean seller for a higher fixed price. I wouldn't pay more than $25 for one. As for charging time, for me, it takes about 4 hours to charge my MaxxxJuice 4100 mAh batteries from ~5–10% to full. External chargers do not fast-charge, so you'll never put too much stress on the battery that way. Of course, swapping may not be for everyone as it may be inconvenient to take a case off and put it back on.
Unlike the older microUSB cables, bad USB Type-C cables that are not built to certain specifications can draw higher currents and destroy the devices they are charging. A few years ago, a Google engineer reviewed lots of USB-C cables on Amazon to give his view on those. If you need a third-party cable, make sure you get one from a reputable source with good reviews. My preferred USB cable is Anker's Powerline+ due to their extra strength/thickness, and I don't need much flexibility/twistability in my cables. Also, I like how the USB-C end connector is made of one single piece where you don't see any connecting lines around the middle (you can see an example here).
Other thoughts:
As long as there is a supply of extra batteries around and you can afford to buy them when the time comes, then you shouldn't worry much about how you charge your phone. In my opinion, that is one of the main selling points of having a hand-removable battery. I imagine a paranoid person on a phone with a sealed battery would be trying to keep the battery level between 40 and 80% at all times. So really, the only thing to worry about is having a decent USB-C cable and making sure the phone's charging port is clean and not worn out.
In case you are really interested on my detailed charging habits and related things on my V20, I discussed them while reviewing my batteries a while back on the V20 Subreddit.
Click to expand...
Click to collapse
On that Subreddit, you mentioned you cycled a couple batteries. Did you have to do the whole fully charge and fully drain thing each time you switched to the new battery, or just when you first bought the batteries?

Would like to know the answer to ^this^ as well.

baldybill said:
On that Subreddit, you mentioned you cycled a couple batteries. Did you have to do the whole fully charge and fully drain thing each time you switched to the new battery, or just when you first bought the batteries?
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pistacios said:
Would like to know the answer to ^this^ as well.
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No, I only did the full cycle with the first battery three times, and that was it. The only reason to do that is for the Android software of the phone to get a better sense of your battery level. Of course, it won't be as accurate the longer you go swapping between batteries as undoubtedly they will differ a bit in capacity over time. But fully running down and then fully charging a battery isn't good for its lifespan if you do it too often. The only other times you'd have to really repeat the calibration is when switching to a battery with a different capacity or switching ROMs / doing a factory reset.

C D said:
No, I only did the full cycle with the first battery three times, and that was it. The only reason to do that is for the Android software of the phone to get a better sense of your battery level. Of course, it won't be as accurate the longer you go swapping between batteries as undoubtedly they will differ a bit in capacity over time. But fully running down and then fully charging a battery isn't good for its lifespan if you do it too often. The only other times you'd have to really repeat the calibration is when switching to a battery with a different capacity or switching ROMs / doing a factory reset.
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So, I got a 4000 Powerbear that I'm calibrating now.
I'm also getting a 4100 Perfine.
Are they close enough that I shouldn't have to recalibrate for the 4100?

baldybill said:
So, I got a 4000 Powerbear that I'm calibrating now.
I'm also getting a 4100 Perfine.
Are they close enough that I shouldn't have to recalibrate for the 4100?
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Most likely yes. I imagine most of these 4000–4300 mAh Lithium polymer batteries that started popping up this year are very similar, and some may just be rebranded from the same common factory source. Barring a defective battery, if the two batteries had a significant difference in capacity, you could see things like early shutdowns on the smaller capacity one or being stuck at a low percentage for an unusually long amount of time on the larger capacity one.

Great info.
So it looks like all other batteries on hand should not be put into rotation with the higher capacity batteries to avoid inaccurate readings in Android.

pistacios said:
Great info.
So it looks like all other batteries on hand should not be put into rotation with the higher capacity batteries to avoid inaccurate readings in Android.
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Pretty much this. I suppose one could try keeping separate copies of the batterystats.bin file from /data/system when rooted and swap them alongside the different batteries. But that sounds like too much of a pain to deal with, even if it works.

C D said:
Most likely yes. I imagine most of these 4000–4300 mAh Lithium polymer batteries that started popping up this year are very similar, and some may just be rebranded from the same common factory source. Barring a defective battery, if the two batteries had a significant difference in capacity, you could see things like early shutdowns on the smaller capacity one or being stuck at a low percentage for an unusually long amount of time on the larger capacity one.
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pistacios said:
Great info.
So it looks like all other batteries on hand should not be put into rotation with the higher capacity batteries to avoid inaccurate readings in Android.
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C D said:
Pretty much this. I suppose one could try keeping separate copies of the batterystats.bin file from /data/system when rooted and swap them alongside the different batteries. But that sounds like too much of a pain to deal with, even if it works.
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Just to add to this, I found your pics @C D for the charging instructions and there's a note about using 3200mah batteries along with the 4100mah batteries.

pistacios said:
Just to add to this, I found your pics @C D for the charging instructions and there's a note about using 3200mah batteries along with the 4100mah batteries.
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Does that mean that if you switch between the batteries, they'll both last as long as they should (the 4100 longer time than the orig. 3200), but the system's percent will be wrong?

My understanding is that if you calibrate the phone to recognize the full 4100mah and then use a 3200mah battery, it will shut down early (but still use the full 3200mah).

Correct. They are warning you that swapping between batteries of significantly different capacities will throw off the accuracy of the phone's battery percentage indicator at all times, especially at the high and low percent values (so an early shutdown can happen when the smaller capacity battery is used). Of course, this won't affect either battery's true capacity.
I'd pay good money for a system that can correctly handle different battery capacities of any amount, but we all know where the future of hand-removable batteries has been heading for the last 3–4 years.

Does anyone charge their phone ONLY to 80 % or so?
If so, what apps do you use to limit this? Any other tips/advice?

baldybill said:
Does anyone charge their phone ONLY to 80 % or so?
If so, what apps do you use to limit this? Any other tips/advice?
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I use AccuBattery and it has a notification sound that plays when you hit the target charge percentage, but it's still up to you to remove the phone from the charger or else it continues charging to 100%.
Since our phones have replaceable batteries, I haven't made any special effort to take care of them. I have a pair of May '17 OEM 3200 mAh batteries that are going to get switched out for a pair of new 4100+ mAh Li-Po batteries once I get my second V20 set up. Every charger I use is QuickCharge 3.0 certified except for USB on my PCs and my Pioneer Android Auto headunit USB connection in one car. The vast majority of the time, I charge via QC 3.0. Pretty much the only time I let the battery charge via PC USB is when I actually need to transfer files between the phone and computer.
Before my phone started having issues in the past month with a phantom power drain, I would let the phone charge from 30-40% to 80-90% and then remove it from the charger at night before going to sleep. In the last half year as the batteries have aged, I've let it get up to between 90-95% before unplugging. For the past month, I've been charging the phone four times a day from 40-100% to combat the power drain issue, but that comes with knowing that I don't care about these old batteries or the state of the firmware on this first V20 anymore.
As for when I swapped the two batteries I have, that entirely depended on when I actually ran one down so far that I needed a 0-100% battery swap, which could be months at a time and usually happened while on vacation or away from a charging source for a longer period of time than what my usual home/car/work routine allows.

Note 10+ Charging Data: 45W is a myth

I am not going to do a huge write up so let's keep this simple. I logged the data for the Note 10+
I emailed the below info as a tip to some Android news sites I know to set the baseline. I did all of the testing myself but there might be additional reporting done since I first conducted these back in late September 2019. I've been waiting for someone to verify the findings which might happen very soon. I didn't post anything since I was waiting on the outlets to publish what I found for it to get more press and maybe Samsung would reply. For now please see the below info including some communication I sent to said places. I've redacted info and will update this OP later today as I have the time/the rest of my write up which on my home PC.
From some communication, I had about getting this published:
That's correct, I ordered it direct from Samsung as pictured below. I used the included cable because it needs to be rated for higher power than the one which comes with the phone. I also verified the charging output using an Apple Thunderbolt 3 100W USB C-C cable since it's certified and I have one. I couldn't get the charger to hit 4A at any voltage which it would need to output 45W. My spreadsheet (link below) has all of the raw data with only the anomaly's (where it dropped to 0W or had a random 0.5V spike for 0.01s) omitted. I verified this by running the tests 2x each on different days with the same ambient room temperature.
I used the following USB logger (also tested with a Pluggable one to ensure output was reading correctly)
https://www.amazon.com/gp/aw/d/B07HVS3KYP?psc=1&ref=ppx_pop_mob_b_asin_title
For the battery % and temp data I used 3C battery monitor widget pro (see screenshots). I only had it record % changes hence why it starts 1% higher than when I started the test. See the screenshots for that data.
There are the original 2 tests in that spreadsheet as well. I hid them since they aren't being used in the final set. The initial 25W test started at 15% battery and had a 4min gap so I scrapped it. As for the 45W test, I started that initial one at 6% vs 2% for the one I sent a picture of earlier.
If you have any other questions please let me know. Something must be causing an issue or perhaps a software bug preventing the full output. I think this is why Samsung delayed shipment initially then they reduced power output (I'm speculating). Maybe we can get an official comment from them explaining things
Click to expand...
Click to collapse
Data Spreadsheet:
https://drive.google.com/file/d/14k4piWIP6DoI0RfSf5cdYQeobjmHBMF3/view
I've been apart of XDA for a long time now but haven't posted in years. I conducted very similar tests for my S7E back then so it's only fitting I did the Note 10+ as well.
Legend:
Grey: Battery %
Orange: Current [A]
Blue: Voltage [V]
Red: Battery temp [C]
45W Charging Data Charts (Note how it peaks at ~35W even when my phone was at 3% charge)
{
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"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
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25W Charging Data Charts: This one hits the indicated 25W
Legend:
Grey: Battery %
range: Current [A]
Blue: Voltage [V]
Red: Battery temp [C]

I think considering how far you're expecting this to go with the press, your sample size is too small and not enough testing has been completed. I'm not saying you aren't completely right and I think you're doing good work but I would just kinda expect more considering the claims being made. I also think there could be issues with testing methodology and hardware.
I think you have quite a high ambient temp and that probably has a lot to do with things, I think you're more learning about Samsung's charging thermal management than anything else here.
If you look at the temps minus the ambient starting point, the 45w charger only warmed the phone up by 9.8C during the charge compared to 11.4C on the 25w charger.

willhemmens said:
I think considering how far you're expecting this to go with the press, your sample size is too small and not enough testing has been completed. I'm not saying you aren't completely right and I think you're doing good work but I would just kinda expect more considering the claims being made. I also think there could be issues with testing methodology and hardware.
I think you have quite a high ambient temp and that probably has a lot to do with things, I think you're more learning about Samsung's charging thermal management than anything else here.
If you look at the temps minus the ambient starting point, the 45w charger only warmed the phone up by 9.8C during the charge compared to 11.4C on the 25w charger.
Click to expand...
Click to collapse
I have connections at places since I used to write for a site. They have a PD tested to verify my findings and people who can do much more detailed testing. I have no reason to doubt the phone isn't pulling 45W based on charging times from multiple sources around the web. There's no way it can pull that current and only reduce charging time by a few minutes
a 13% reduction in charging time for a 44% increase in charging power is odd. Of course, these things don't scale linearly but there should be a larger gap between the two. I timed the phone with and without my tester and it gave me the same end result meaning the tester is showing accurate data for the power I am pulling which isn't 45W ever
Here's the charging data table
If you look at my post history, and reputation, I don't say these things lightly nor should I need to even mention that. I see the crowd has changed here over the years, perhaps for the worse.

I don't doubt the fact it will never actually draw the 45W, did Samsung ever claim the phone would draw 45w while charging? I would agree the 44% increase in charging power is odd but also pretty irrelevant considering the relative costs.
Also I was here 3 years before you buddy so you can talk about your own crowd!

willhemmens said:
I don't doubt the fact it will never actually draw the 45W, did Samsung ever claim the phone would draw 45w while charging? I would agree the 44% increase in charging power is odd but also pretty irrelevant considering the relative costs.
Also I was here 3 years before you buddy so you can talk about your own crowd!
Click to expand...
Click to collapse
They're advertising it as a faster charging that outputs 45W if they didn't need 45W there's no reason to make it 45W. They launch new chargers every generation of devices, even if that means a color change not an output one. The 25W charger outputs 25W, why else make a 45W charger that the phone can't use when you can make a 35W one? Remember they delayed the launch a month or so for unknown reasons for this charger. I also own an OP 7 Pro and the Warp Charger is rated for 30W and outputs 30W. I've yet to see a Samsung charger for their phones not output the highest rating ie 45W/25W/15.3W (S9+ or earlier) that they are capable of.
Yes, and you and I know the way people view things has changed. Doubting what I said based merely on sample size is an example. I'd love to be proved wrong because at least then we would have a clear answer and hopefully an explanation.

it was my impression that the fast charger was just to get to the 80% range then it slows down as do most chargers, saw something before saying it was some form of battery protection built into the charging process so the battery charges faster through a medium range but to end it slows down. this is actually visible on the 25W charger, my phone can say a time to charge from about 30% and still have nearly half the time showing for the last 20% so it seems like a fail safe and I totally understand why Samsung would build one in after the 7.
also makes sense with your charging times table if you tracked both to 80% they both take about 25 mins for the last 20% at a rough guess, as neither actually reports 80% on a time scale. also if this is a slow down to the limit it would also explain the drop off in faster charging past the 30min mark, as if it does ramp down slowly after the 80% mark the phone on a lower charge would start to gain as it would still be higher up the charge table than the fast charger.
also the fact they don't ship with the 45W I doubt they intended it as anything more than an "oh crap my phone is nearly flat" charger and for that it can boost the phone reasonably faster than the 25W, if you are just about to leave the house and notice your phone is a bit low.
I honestly don't feel this is as big a problem as you are making it.

There are 100% reasons to make it 45w even though the current devices may not fully utilise its peak output. There are also laptops with significantly larger (42Wh) batteries that are listed as compatible with this charger.
My explanation would be that the Note10+ is simply "compatible" with this charger. That doesn't mean it can use it's full 45W output but even your testing shows for short bursts (which for a lot of people matters most) the 45W charger will charge faster.
I made a kinda crap graph with your data that I found interesting on your 45W charge run
It's interesting as you can see the 5 min burst of 35W right at the start as the temp stays kinda stable, then the temp just rises as the power drops down to 25W at 12 minutes where it chills for a while and slows from there.
I wonder what the graph would look like if the battery temps were 10C cooler, I suspect pretty different.
Also the fact it goes straight to bang on 35W specifically kinda makes it look like that's the defined charging limit for Note 10+, has anyone ever gone above 35W?
These devices are very temp dependent when charging, for example I found the Note9 would drop to 5W wireless charging speeds when it hit 38C and once cooled to 36C, it would go back to 10W fast wireless charging again and then cycle between to two as the temp fluctuated.
I would complete the testing myself if I had a 45W charger but I don't and don't plan to buy one. If you could repeat the 45W test but starting at 15 or 20C battery temp, I would be very interested to see the result.

A couple things here I'm curious about:
When this charger is in use (the 45W Samsung one), does the Note 10+ indicate Super Fast Charging is enabled/being used on the Lock Screen or Always On Display?
The reason I ask is because since the Android 10 / One UI 2.0 update, I see Super Fast Charging displayed when using the charger that came with the Note 10+ (Model: EP-TA800) which is PDO at 11v 2.25A max which equals 24.75W. Now this charger supports PDO and PPS and some other voltages too, so I'm willing to bet it gets slower based on device temp/battery charge level. Even at 24W though, it charges pretty friggin fast and I'm totally happy with it.
I have an Insignia USB-C PD charger for my laptop, PDO at 5V 3A, 9V 3A, 15V 3A, 20V 4.5A. This charger will only charge at "Fast Charging" not "Super Fast Charging" so I'm willing to bet it negotiates 5V 3A which equals 15W. I do not have anything to measure it with.
I think the others and yourself are right, I don't think the phone actually supports 45W charging. The charger itself does, but the phone does not. I think you are correct that what you're seeing (and may go a bit higher based on temp/and other variables) is the limit of the device and no where can I find that Samsung says the phone can charge at 45W.
With the 45W charger, you will get the fastest, maximum charge rate based on factors such as heat and battery level, that's it and future devices will be able to take advantage of it. 35W is still fantastic though. I might grab one of these chargers if I can find one for cheaper than $50... lol

If it doesnt say super fast charging it isnt super fast charging, it usually only does when the phone is off but i was just watching it go up several % within a very short time. Smoked a cigarette and ive been sitting over a solid 40% for a bit.

ka24e said:
A couple things here I'm curious about:
When this charger is in use (the 45W Samsung one), does the Note 10+ indicate Super Fast Charging is enabled/being used on the Lock Screen or Always On Display?
The reason I ask is because since the Android 10 / One UI 2.0 update, I see Super Fast Charging displayed when using the charger that came with the Note 10+ (Model: EP-TA800) which is PDO at 11v 2.25A max which equals 24.75W. Now this charger supports PDO and PPS and some other voltages too, so I'm willing to bet it gets slower based on device temp/battery charge level. Even at 24W though, it charges pretty friggin fast and I'm totally happy with it.
I have an Insignia USB-C PD charger for my laptop, PDO at 5V 3A, 9V 3A, 15V 3A, 20V 4.5A. This charger will only charge at "Fast Charging" not "Super Fast Charging" so I'm willing to bet it negotiates 5V 3A which equals 15W. I do not have anything to measure it with.
I think the others and yourself are right, I don't think the phone actually supports 45W charging. The charger itself does, but the phone does not. I think you are correct that what you're seeing (and may go a bit higher based on temp/and other variables) is the limit of the device and no where can I find that Samsung says the phone can charge at 45W.
With the 45W charger, you will get the fastest, maximum charge rate based on factors such as heat and battery level, that's it and future devices will be able to take advantage of it. 35W is still fantastic though. I might grab one of these chargers if I can find one for cheaper than $50... lol
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I did a few runs if you reference the spreadsheet, I can also link the battery temp data which was recorded via an app since there's not a better way I could find to do so. The initial run looks about the same, you can reference the true RAW data in the link below. I smoothed out random spikes in the curves since they were extraneous values of 0W or random dips/spikes of 0.01s
Google Drive link to some other runs (including the ones I posted). I didn't put all of them in that sheet because it was getting cumbersome.
https://drive.google.com/open?id=1Dck5Svne2S4Y7ZUX-g7Nj2-eqQh_nsot
If I recall correctly the 45W spec was advertised as the Note 10+'s charging speed with the faster charger. Many news sites, and Samsung's own press release documented this last year. I'm linking their press release(s) below with screenshots showing how they say it charges at 45W. This is the claim I wanted to test, nothing more. I think Samsung dropped the ball with their statements and falsely advertised the charger.
[1] https://news.samsung.com/us/5-ways-samsung-enhanced-galaxy-note10/
[1] Samsung's Site
[2] https://news.samsung.com/global/int...-bring-passions-to-life-with-next-level-power
[2] Samsung's Site
zchamwithaplan said:
If it doesnt say super fast charging it isnt super fast charging, it usually only does when the phone is off but i was just watching it go up several % within a very short time. Smoked a cigarette and ive been sitting over a solid 40% for a bit.
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willhemmens said:
There are 100% reasons to make it 45w even though the current devices may not fully utilise its peak output. There are also laptops with significantly larger (42Wh) batteries that are listed as compatible with this charger.
My explanation would be that the Note10+ is simply "compatible" with this charger. That doesn't mean it can use it's full 45W output but even your testing shows for short bursts (which for a lot of people matters most) the 45W charger will charge faster.
I made a kinda crap graph with your data that I found interesting on your 45W charge run
It's interesting as you can see the 5 min burst of 35W right at the start as the temp stays kinda stable, then the temp just rises as the power drops down to 25W at 12 minutes where it chills for a while and slows from there.
I wonder what the graph would look like if the battery temps were 10C cooler, I suspect pretty different.
Also the fact it goes straight to bang on 35W specifically kinda makes it look like that's the defined charging limit for Note 10+, has anyone ever gone above 35W?
These devices are very temp dependent when charging, for example I found the Note9 would drop to 5W wireless charging speeds when it hit 38C and once cooled to 36C, it would go back to 10W fast wireless charging again and then cycle between to two as the temp fluctuated.
I would complete the testing myself if I had a 45W charger but I don't and don't plan to buy one. If you could repeat the 45W test but starting at 15 or 20C battery temp, I would be very interested to see the result.
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I don't think it would charge any faster even if I chilled the phone first. I am waiting on some sources to test the charger and verify this which I hope will happen very soon.
For the record the phone always indicated the proper fast charging on the screen. It will NOT fast charge at the higher rate if the phone is powered down per my testing

I think the main people to blame are the press, for the most part they believe and just repeat the marketing rubbish. They all made the claim that "the Note10+ has 45W charging" but none tested it. Ofcourse Samsung didn't do anything about this misinformation being spread but this is Samsung.
Samsung themselves never seem to have specifically stated the phone will charge at 45W. Looking at those marketing materials I think they covering their backs with the "up to" and where they are stating information "only refers to the Note10+", they are trying to show that the Note10 is not supported.
And don't get me wrong, I'm not on Samsung's side and I do think this is ****ty but I'm also pretty sure you're wasting your time.

willhemmens said:
I think the main people to blame are the press, for the most part they believe and just repeat the marketing rubbish. They all made the claim that "the Note10+ has 45W charging" but none tested it. Ofcourse Samsung didn't do anything about this misinformation being spread but this is Samsung.
Samsung themselves never seem to have specifically stated the phone will charge at 45W. Looking at those marketing materials I think they covering their backs with the "up to" and where they are stating information "only refers to the Note10+", they are trying to show that the Note10 is not supported.
And don't get me wrong, I'm not on Samsung's side and I do think this is ****ty but I'm also pretty sure you're wasting your time.
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It doesn't matter, it never hits up to 45W period. They can't get it wrong in so many places if it wasn't intentional.

Pilz said:
It doesn't matter, it never hits up to 45W period. They can't get it wrong in so many places if it wasn't intentional.
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That's the thing dude, Samsung never said it would hit 45W. They just said it had the potential to do so.

willhemmens said:
That's the thing dude, Samsung never said it would hit 45W. They just said it had the potential to do so.
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Except it doesn't, why are you trying to argue this? They always say 'up to' for their releases but guess what the Note hits 25W with the factory charger just like the 'up to'
says. Look, you and I both know they're full of it if you're only going to troll or provide dumb comments using the 'devil's advocate' or whatever excuse then let it be. At their unpacked event, it was also stated very clearly. The 45W is a lie, no phone hits it with their charger. You can use any 100W rated USB C-C properly spec'd cable, like a Thunderbolt one with their brick and it will peak well below their claim. Even their product page for the charger says it'll do up to the 45W on a supported device which the Note 10+ is. Legally speaking the phone has to hit 45W or they can't say 'up to' so go ahead and try making more flawed arguments. I'm not going to reply to your comments beyond this unless they're actually constructive or add to this.
Product page (along with many reviews saying it doesn't charge faster or very marginal vs the 25W.. hmm I wonder why that is, oh wait because the charger doesn't hit 45W :silly: )
https://www.samsung.com/us/mobile/m...t-charging-wall-charger-white-ep-ta845xwegus/
Charger aside, let's be adults here and discuss the real issue: Samsung promised but did not deliver

Pilz said:
Except it doesn't, why are you trying to argue this? They always say 'up to' for their releases but guess what the Note hits 25W with the factory charger just like the 'up to'
says. Look, you and I both know they're full of it if you're only going to troll or provide dumb comments using the 'devil's advocate' or whatever excuse then let it be. At their unpacked event, it was also stated very clearly. The 45W is a lie, no phone hits it with their charger. You can use any 100W rated USB C-C properly spec'd cable, like a Thunderbolt one with their brick and it will peak well below their claim. Even their product page for the charger says it'll do up to the 45W on a supported device which the Note 10+ is. Legally speaking the phone has to hit 45W or they can't say 'up to' so go ahead and try making more flawed arguments. I'm not going to reply to your comments beyond this unless they're actually constructive or add to this.
Product page (along with many reviews saying it doesn't charge faster or very marginal vs the 25W.. hmm I wonder why that is, oh wait because the charger doesn't hit 45W :silly: )
https://www.samsung.com/us/mobile/m...t-charging-wall-charger-white-ep-ta845xwegus/
Charger aside, let's be adults here and discuss the real issue: Samsung promised but did not deliver
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I argue for the same reason you do, it's my honest opinion.
I think your understanding of "up to" is wrong.
Here is the definition:
used to say that something is less than or equal to but not more than a stated value, number, or level
https://dictionary.cambridge.org/dictionary/english/up-to
So yes, they absolutely could say "Note10+ charges at up to 100W" if they wanted, as long as the phone charges at a speed less than or equal to 100W, that statement would be correct.

willhemmens said:
I argue for the same reason you do, it's my honest opinion.
I think your understanding of "up to" is wrong.
Here is the definition:
used to say that something is less than or equal to but not more than a stated value, number, or level
https://dictionary.cambridge.org/dictionary/english/up-to
So yes, they absolutely could say "Note10+ charges at up to 100W" if they wanted, as long as the phone charges at a speed less than or equal to 100W, that statement would be correct.
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The language is purposely vague to mislead people. I understand the definition of the phrase but thanks for yet again assuming I don't.
They could try but that would only further make them look dumb. I don't like it when companies do such things because it erodes any consumer confidence in their products As it stands I'm not exactly thrilled with Samsung's current language or avoidance to the topic.
Keep in mind, the trends I posted also show the phone isn't using USB PD PPS which is another issue I forgot to point out because I haven't posted my initial write up. I'll have to try doing so tonight if I have the time.

ka24e said:
A couple things here I'm curious about:
When this charger is in use (the 45W Samsung one), does the Note 10+ indicate Super Fast Charging is enabled/being used on the Lock Screen or Always On Display?
The reason I ask is because since the Android 10 / One UI 2.0 update, I see Super Fast Charging displayed when using the charger that came with the Note 10+ (Model: EP-TA800) which is PDO at 11v 2.25A max which equals 24.75W. Now this charger supports PDO and PPS and some other voltages too, so I'm willing to bet it gets slower based on device temp/battery charge level. Even at 24W though, it charges pretty friggin fast and I'm totally happy with it.
I have an Insignia USB-C PD charger for my laptop, PDO at 5V 3A, 9V 3A, 15V 3A, 20V 4.5A. This charger will only charge at "Fast Charging" not "Super Fast Charging" so I'm willing to bet it negotiates 5V 3A which equals 15W. I do not have anything to measure it with.
I think the others and yourself are right, I don't think the phone actually supports 45W charging. The charger itself does, but the phone does not. I think you are correct that what you're seeing (and may go a bit higher based on temp/and other variables) is the limit of the device and no where can I find that Samsung says the phone can charge at 45W.
With the 45W charger, you will get the fastest, maximum charge rate based on factors such as heat and battery level, that's it and future devices will be able to take advantage of it. 35W is still fantastic though. I might grab one of these chargers if I can find one for cheaper than $50... lol
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Yup.

The Rated information at the bottom of the Note 10+ "About Phone" system info says DC rating is 10V 4.5A (45w)... So ... Where's the walk to back up the talk??

willhemmens said:
I argue for the same reason you do, it's my honest opinion.
I think your understanding of "up to" is wrong.
Here is the definition:
used to say that something is less than or equal to but not more than a stated value, number, or level
https://dictionary.cambridge.org/dictionary/english/up-to
So yes, they absolutely could say "Note10+ charges at up to 100W" if they wanted, as long as the phone charges at a speed less than or equal to 100W, that statement would be correct.
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ketterj said:
The Rated information at the bottom of the Note 10+ "About Phone" system info says DC rating is 10V 4.5A (45w)... So ... Where's the walk to back up the talk??
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Click to collapse
Clearly the phone doesn't actually do that meaning Samsung must've disabled it due to issues or who knows what.

Some brief observations using a Samsung 45w charger on my Note 10+ using a wall power meter.
From 5% battery to 20%, the power draw was 37w, so I suspect this to be doing 9V 4A. Then from here on to about 50% (where I gave up my test) the phone will continually modulate between 37W and 9W every 5-6% charge, with the 9W happening for about a minute. I suspect this to be thermals and during cool down its doing 9V 1A. I wish I had a power meter on the USB cable but unfortunately I don't.
So let's visit what my Samsung charger is to see if this makes sense... I have a EP-TA845 Travel Adaptor made in Vietnam. The included USB cable is marked 5A, so it should be good for 5Amp!
Here's the specs:
PDO: 5.0V - 3.0A, 9.0V - 3.0A, 15.0V - 3.0A, 20V - 2.25A
So it doesn't have any PDO for the 10V Note capability... So let's visit the PPS!
PPS: 3.3-11.0V - 4.05A, 3.3-16.0V - 2.8A, 3.3V-21.0V - 2.1A
The maximum capability the programmable power supply can possibly feed the phone is 11.0V 4.05A, but I suspect looking at my wall draw that it's likely doing 9V 4.05A give or take. There is no way the phone can command 4.5A at any voltage, let alone at 10V or even 9.
Is there another model charger out there perhaps that the Note needs to achieve the power draw?
I'm now keen to try charging ontop of an ice block to see if that aids in reducing the modulation