Develop Bugs

Galaxy Nexus 3G charging time (with graph)

Hello *@*,
I intentionally discharged my GN to a battery level of 1% today to record the charging time just for myself. Then I thought: why not make a graph out of it and share it with XDA?
Total charging time (1% to 100%): 142 minutes
Level checked at 0, 30, 60, 90, 120, 125, 130, 135, 140 and 142 minutes
WiFi On, 3G On, Sync On, Screen Off, no calls/msgs/notifications received, phone not used except for % check
1750 mAh Samsung stock battery & charger

Stock or extended battery? I've noticed my charge time varies wildly. Most of the time it's on par with what you've listed here, but every once in a while it goes up 30% in like 20 mins.

Drewmungus said:
Stock or extended battery? I've noticed my charge time varies wildly. Most of the time it's on par with what you've listed here, but every once in a while it goes up 30% in like 20 mins.
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3G, 1750 mAh stock battery. Sorry, I forgot about that.

Its so curious how the charge can be faster at the start

Rickymax said:
Its so curious how the charge can be faster at the start
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Get a more powerful charger.... I'm using my playbook charger, which uses a 2.1 amp... Way faster than 142 mins... Mine takes about 1:30 to charge from 1% to full.
Sent from my Galaxy Nexus

Rickymax said:
Its so curious how the charge can be faster at the start
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All capacitors acts this way (a battery is also a capacitor) the charge/discharge is always fsstest to 63% both ways and after that it slowes down.. this can ofcourse be monitored and controlled with soft or hardware. But this is the reality of capacitors
Sent from my Galaxy Nexus using xda premium

big samm said:
Get a more powerful charger.... I'm using my playbook charger, which uses a 2.1 amp... Way faster than 142 mins... Mine takes about 1:30 to charge from 1% to full.
Sent from my Galaxy Nexus
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isnt it bad for the battery when it is not designed to receive charge that quickly?

All about charging LiIon batteries: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
TL;DR:
LiIons are charged in two main stages:
- stage 1 with constant current, that's the fast charging rate for (roughly) the first 2/3 of the batteries capacity
- stage 2 with constant voltage and a tapered charge current for the last 1/3 of the batteries capacity, that's the slow part where the graph flattens
This is necessary because a LiIon battery is full at exactly 4.20 V and can not handle any overcharge. In fact at ~4.55 V (only + 0.35 V!) the battery would "vent with flame" aka explode.
If you wanna do this on purpose, this is what will happen: http://www.youtube.com/watch?v=YCWdnjLqVWw
Using a more powerful charger can work if the electronics inside the GN handle the higher current properly. I wouldn't recommend it, though. It may charge quicker but it will wear down your battery faster as well.

The phone can only draw up to 1A regardless of much higher the charger is.
So if you're buying a charger, don't bother paying extra for a 2A, but there is no harm in using a 2A charger if you already have one.

wonshikee said:
The phone can only draw up to 1A regardless of much higher the charger is.
So if you're buying a charger, don't bother paying extra for a 2A, but there is no harm in using a 2A charger if you already have one.
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But I can assure you that my phone charges faster with my Playbook charger than the regular charger that came with the phone... How many amp the regular charger uses?
Sent from my Galaxy Nexus

big samm said:
But I can assure you that my phone charges faster with my Playbook charger than the regular charger that came with the phone... How many amp the regular charger uses?
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Stock charger is 5V/1A (=5 watts). There may be some leeway built into the GN's charging electronics so it can utilize more than 5 watts, but you can safely assume that Samsung would have packaged this phone with a 10 watt charger if it was safe (or desirable in terms of charging time vs. battery durability). Charging time is an important aspect after all.

The phone can absolutely handle it. I think Samsung is just too cheap to give us a rapid charger, I mean there was enough space in the box.
Sent from my Galaxy Nexus

My car charger is a 2amp charger and does approximetly 1 percent a minute. At home I connect it to my HP Touchpad charger and it seems to charge really quick.
But I LOOOOOOVE my car charger as it can charge my Tablets and phones fast. Well worth the 30 bucks I spent at Best Buy for the rapid charger.

surely a 2amp charger is capable of providing 2amps, but if whatever is attached only drawers 1amp then that's what it'll get ? It doesn't force 2 amps down it's throat ? My palm pre 2 charger is 1amp, my touchpad has a 2 amp charger, but my palm pre doesn't charge any quicker using the touchpad charger.

My Gnex does charge really fast using the plug that came with it especially coming from galaxy s2 which takes ages for a full charge.

alphaola said:
My Gnex does charge really fast using the plug that came with it especially coming from galaxy s2 which takes ages for a full charge.
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+1 I found the gnex really fast charging compared to my sgs2. With the sgs2 I always had it plugged in for fear of a flat battery with the gnex the charging is so fast I don't care anymore.
Sent from my Galaxy Nexus using XDA App

AcE XBOX said:
My car charger is a 2amp charger and does approximetly 1 percent a minute. At home I connect it to my HP Touchpad charger and it seems to charge really quick.
But I LOOOOOOVE my car charger as it can charge my Tablets and phones fast. Well worth the 30 bucks I spent at Best Buy for the rapid charger.
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FYI, 1% a min is roughly 1A.
In 1 hour, it would restore 60%, 60% of 1.750A = 1.050A.
Nexus battery is the perfect size to eyeball the inflow rate.
30%/hr = .5A
60%/hr = 1A
60%/30min = 2A
If you think you're charging at 2A, simply time it. Also these are rough numbers and will only be accurate when the battery is low.

[Q] Battery charging too slow!?!?!

Charging time for my battery is pretty slow. I takes more than 3 hours from 10% to full! It doesn't matter if it is chraging with the carger or via USB. Is this normal with the Nexus? I had Htc Inspire 4G, and the charging took 2 hours top!
*if i use the phone while charging e.g. play some game, the battery is still draining instead of charging.
Sent from my Galaxy Nexus using xda app-developers app

You should get better results with an A/C charger but I've seen some wall adapters still read as if its plugged in via USB. You can check by going to settings >> battery while it's plugged in and it should read A/C charging.

ordevski said:
Charging time for my battery is pretty slow. I takes more than 3 hours from 10% to full! It doesn't matter if it is chraging with the carger or via USB. Is this normal with the Nexus? I had Htc Inspire 4G, and the charging took 2 hours top!
*if i use the phone while charging e.g. play some game, the battery is still draining instead of charging.
Sent from my Galaxy Nexus using xda app-developers app
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What is the max current (mA) the charger you use can provide? Divide the capacity of your battery (in mAh) by the charge current. That is your approximate charge time in hours. I believe most AC chargers can charge with 1A, so a stock GSM battery of 1750 mAh should take less than 2 hours from being discharged to fully charged. Mine does.
The behavior that the GNEX will discharge even while being charged with a non AC charger (including car chargers) when gaming/navigating is not uncommon.

3rdstring said:
You should get better results with an A/C charger but I've seen some wall adapters still read as if its plugged in via USB. You can check by going to settings >> battery while it's plugged in and it should read A/C charging.
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Yes, it's reading A/C charging, but the charger is from alcatel with 400mAh output.

Petrovski80 said:
What is the max current (mA) the charger you use can provide? Divide the capacity of your battery (in mAh) by the charge current. That is your approximate charge time in hours. I believe most AC chargers can charge with 1A, so a stock GSM battery of 1750 mAh should take less than 2 hours from being discharged to fully charged. Mine does.
The behavior that the GNEX will discharge even while being charged with a non AC charger (including car chargers) when gaming/navigating is not uncommon.
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Click to collapse
I've been charging it with Alcatel charger with 400mAh output. I'll try with Samsung charger with 5.0V output which says it's equal to 0.7A because I don't have the original (I think i have used it before, but i dont recall that it was any faster).
Could be kernel related issue, since there is an option to "Fast charge" via USB and it's enabled?

ordevski said:
I've been charging it with Alcatel charger with 400mAh output. I'll try with Samsung charger with 5.0V output which says it's equal to 0.7A because I don't have the original (I think i have used it before, but i dont recall that it was any faster).
Could be kernel related issue, since there is an option to "Fast charge" via USB and it's enabled?
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its not likely a kernel issue unless you are on some experimental one, but you would be able to easily find out by looking at the forum cause others would have the issue. And if you didn't know the Fast Charge option is to make your phone think its hooked up to a wall port if you are charging from your laptop or if your car charger is only being used a usb port thing.

jv2543 said:
its not likely a kernel issue unless you are on some experimental one, but you would be able to easily find out by looking at the forum cause others would have the issue. And if you didn't know the Fast Charge option is to make your phone think its hooked up to a wall port if you are charging from your laptop or if your car charger is only being used a usb port thing.
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It's franco kernel, nightly 251, pretty stable from what i've read in the thread. Also, I know what does Fast Charge option do, but I thought that somehow it messed something up. While I was googling for answers, I found some forum, where was mentioned the battery chip that is regulating the power it's using to charge the battery could somehow get messed up. Maybe I have bad batt.

mine battery too takes 3 hours to full charge using stock samsung wall charger. I'm using stock rom and kernel.

Mines takes 1 hr 30 minutes tops with fast charge
Sent from my Galaxy Nexus using xda app-developers app

You are using a 400mA charger, the gnex comes with a 1A one. Go figure.
Beamed from Maguro
---------- Post added at 07:42 AM ---------- Previous post was at 07:38 AM ----------
Petrovski80 said:
What is the max current (mA) the charger you use can provide? Divide the capacity of your battery (in mAh) by the charge current. That is your approximate charge time in hours. I believe most AC chargers can charge with 1A, so a stock GSM battery of 1750 mAh should take less than 2 hours from being discharged to fully charged. Mine does.
The behavior that the GNEX will discharge even while being charged with a non AC charger (including car chargers) when gaming/navigating is not uncommon.
Click to expand...
Click to collapse
That is because the car charger most likely did not short both the data pins out, therefore you notice the discharging phenomenon because the phone will only take in 500mA without the data pins shorted or with kernel fast charge enabled. How is 500mA going to keep up with navigation, GPS and all other tasks?
Beamed from Maguro

Also realize that your previous phones battery probably had a lower capacity than the gnex therefore coming from 2 hours, 3 hours isn't that bad for charging a bigger battery
Sent from my Galaxy Nexus using xda premium

ordevski said:
Charging time for my battery is pretty slow. I takes more than 3 hours from 10% to full! It doesn't matter if it is chraging with the carger or via USB. Is this normal with the Nexus? I had Htc Inspire 4G, and the charging took 2 hours top!
*if i use the phone while charging e.g. play some game, the battery is still draining instead of charging.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
I don't recommend using another charger I used a galaxy infuse 4g charger and in a week my battery got so hot it didnt even charge anymore
Sent from my Galaxy Nexus using xda premium

As has been stated get a GOOD quality charger. I might be weird but both my car charger and spare outlet charger came from Verizon. At least when i have had something not work they have been more than happy to open another and fully test in store for however long it takes. Sadly, my last car charger broke and I am too lazy to get another, my solution was to use a car inverter since I charge my other devices regularly on long trips. Plugging in a regular wall outlet from, oddly enough Motorola, does the job just fine. Alas, the majority of chargers my coworkers leave out are for lesser phones and will not even register on my beastly Nexus.

However i think i damaged my charger (original 1Ampere samsung wall charger) when i've been in Malta (i'm from Italy) last August. Before the holyday my nexus charged in 2 hours or less. During the holyday the charger heated a lot more than when using at home and now the charging process lasts about 3 hours. Also, when i connect the charger to the wall (even if the phone is unplugged) i hear a low almost-ultrasonic whistle.
I hope the damage isn't the battery.

Il_Tene said:
However i think i damaged my charger (original 1Ampere samsung wall charger) when i've been in Malta (i'm from Italy) last August. Before the holyday my nexus charged in 2 hours or less. During the holyday the charger heated a lot more than when using at home and now the charging process lasts about 3 hours. Also, when i connect the charger to the wall (even if the phone is unplugged) i hear a low almost-ultrasonic whistle.
I hope the damage isn't the battery.
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I have the same problems too. I tried to use other charger, but the problem still remain. My charging process lasts about 2.30 h to charge from 55% to 100%. I really hate this because I need to charghe my phone faster. Please help us. (I'm italian too).

Ginuzzo50 said:
I have the same problems too. I tried to use other charger, but the problem still remain. My charging process lasts about 2.30 h to charge from 55% to 100%. I really hate this because I need to charghe my phone faster. Please help us. (I'm italian too).
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Same problem here with another charger, and also via USB with Fast Charge enabled!

ordevski said:
Same problem here with another charger, and also via USB with Fast Charge enabled!
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Where did you find the settings to set the Fast Charge?

Ginuzzo50 said:
Where did you find the settings to set the Fast Charge?
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With a custom kernel.

Ginuzzo50 said:
Where did you find the settings to set the Fast Charge?
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I'm using CodenameAndroid ROM, which has kernel that allows you to enable Fast Charge. It's located in Settings --> Performance --> Kernel controls --> USB fast charge

you tslees
ordevski said:
I'm using CodenameAndroid ROM, which has kernel that allows you to enable Fast Charge. It's located in Settings --> Performance --> Kernel controls --> USB fast charge
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Thank you very much. And the effective result is really a faster charging? Does it works good or not?

2A charger

Hey guys,
I've used my HP touchpad charger a couple times now and it seems to drastically speed up charging. I thought I'd see if anyone else had experienced this as well.
Sent from my HTC One using xda app-developers app

I would not recommend using tablet chargers like that. Although it does speed up charging I think you might also wear out your battery quicker.
Sent from my HTC One using xda app-developers app

I would not recommend using tablet chargers like that. Although it does speed up charging I think you might also wear out your battery quicker.
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That's not right. The charging speed is limited by the battery and their charging managemend, not by the charger. If the battery management is configured at 1A it is charging with 1A even if you use a 2A charger.
If you can charge the HTC One with a bigger charger faster than it is not negative for the battery because it's allowed by the battery management. But I don't think, that it is really faster. I will test it for myself later with the 2A Charger from the ipad.

jhonsok said:
I would not recommend using tablet chargers like that. Although it does speed up charging I think you might also wear out your battery quicker.
Sent from my HTC One using xda app-developers app
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I do know where this is coming from but just isn't the case anymore. All batteries made for cells phones in the last 2 years have smart charging chips in them. Meaning they can not overcharge, charge too fast, or discharge too much. These batteries have tech built in that could charge them in about a hour. People think this was disabled to help prolong the life of the battery. This is also false. Fast charging does have a slightly negative effect but we are talking about 2% negative. So if the battery would have went through 2000 charge cycles normally than with a fast charge it would only last around 1180 charge cycles. It's a non difference. It is the reason people have been saying that the fast charge feature is disabled but they have no idea and it sounds good so the community here has decided it to be true.
Now technically it should not matter what amp charger we plug in as the phone should only take a certain amount. Now I know this is false as I also use the 2amp Touchpad charger and can confirm it does charge around 30% faster.

Can someone explain why the power capability of the charger makes any difference?
Rules of electronics. V = IR or in this case I = V/R Current = Voltage / Resistance
By definition if too much current is drawn from the power supply the voltage will collapse. Similarly, at any given voltage and input resistance, the current will never exceed a certain level.
So the worst that can happen is you damage a power supply trying to charge a greedy iPad with an under spec'd power supply.
But I see certain devices that say, never use a 2A charger as it can damage the device? Why? By definition it will never draw more current than the circuit is designed for.....what am I missing?

jonstatt said:
Can someone explain why the power capability of the charger makes any difference?
Rules of electronics. V = IR or in this case I = V/R Current = Voltage / Resistance
By definition if too much current is drawn from the power supply the voltage will collapse. Similarly, at any given voltage and input resistance, the current will never exceed a certain level.
So the worst that can happen is you damage a power supply trying to charge a greedy iPad with an under spec'd power supply.
But I see certain devices that say, never use a 2A charger as it can damage the device? Why? By definition it will never draw more current than the circuit is designed for.....what am I missing?
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Nothing at all :cyclops:
Now if you use a .5 amp you do run the risk of burning it out as the device will try and pull more than .5amp and will succeed putting too much strain on the charger.

AFAIK the charging voltage/amperage is dynamically controlled by software(kernel). Starting from empty the voltage will be higher, but decreasing when battery is getting fuller.

VeixES said:
AFAIK the charging voltage/amperage is dynamically controlled by software(kernel). Starting from empty the voltage will be higher, but decreasing when battery is getting fuller.
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The voltage of the power supply should be a controlled 5V (I know some poor supplies are not so perfect). The only way of changing the current being drawn is to change the resistance , but that would be a constant as determined by the battery itself (its current draw will change depending on how full it is at the time). If there was actually a charge controller circuit in the phone itself, then it should not matter whether you have 2A, 5A or 50A, because it should only ever draw the power it needs. Also if there was effectively a "short circuit" and you tried to draw 2A from a 1A power supply, the power supply voltage would collapse and charging would simply stop. Therefore the charging circuit will have been designed with an expected current flow. As voltage is 5V and the input resistance always remains constant, the charging current can never be more or less than what was intended by design! Of course if the power supply outputs 10V instead of 5V, then it WILL draw more current and do lots of damage!
Think of it this way. If you run at 5 mph, it doesn't matter whether you are 3 feet tall or 6 feet tall, you will still arrive at the destination at exactly the same time.

There are different cables that can be purchased that essentially have just the positive and negative connections in use. This removes the control connections that allow the phone to regulate the amount of power so it allows the device to charge at a faster rate.
I have used these cables for years on many devices and have never had a problem but it is worth noting that I only use them sparingly and the vast majority of the time I use the standard chargers that come with the devices.
MG

Stop with the FUD people, the only thing that matters is the voltage of the charger. It needs to be 5V or else it will damage the phone. Otherwise, the phone will self limit the amount of charge taken in.
Sent from my HTC One using xda app-developers app

Using a higher current charger will degrade the life of the battery faster than normal. It will also be hotter when chraging, thus further degrading the life of the battery.
Bear in mind USB2.0 can only provide 500mA and makes charging slower.
Using a 2A charger ON OCCASION will be fine, but long term use will degrade your battery, it's that simple.

fast charging batteries is not as good as slow charging for the batteries. It's not terrible, but it is worse for their health.
the smart chips in the phones are allowing to be faster charged = faster charge times. HTC probably allowed this because they knew it would pacify complaints about their slow charge.
The htc engineers saw it fit to include the charger they did, they know its charges slow, it's for a reason.

nullkill said:
Fast charging does have a slightly negative effect but we are talking about 2% negative. So if the battery would have went through 2000 charge cycles normally than with a fast charge it would only last around 1180 charge cycles. It's a non difference. It is the reason people have been saying that the fast charge feature is disabled but they have no idea and it sounds good so the community here has decided it to be true.
Now technically it should not matter what amp charger we plug in as the phone should only take a certain amount. Now I know this is false as I also use the 2amp Touchpad charger and can confirm it does charge around 30% faster.
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Your numbers are a little off i'm afraid. If its only a 2% issue from 2000 charges.. you show 1180 to be then new charge..thats almost 50%. 50% would be 1000 charges.. 2% from 2000 would be 1960 Better number for your point
the_scotsman said:
Using a higher current charger will degrade the life of the battery faster than normal. It will also be hotter when chraging, thus further degrading the life of the battery.
Bear in mind USB2.0 can only provide 500mA and makes charging slower.
Using a 2A charger ON OCCASION will be fine, but long term use will degrade your battery, it's that simple.
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Yeah it will degrade it quicker, but not significantly. I agree with the previous posts. Its fine to use a charger with higher amps than needed but its not good to use lower amps. (lower than 500ma) Lower amps will kill chargers quick. If usb is 500ma then these phones must be fine with variable amps (within its limits) I dont know what the variable numbers are but say its 500ma min, 2A max.. using a 3A charger or a 5A charger shouldnt make a difference in charge speed. It'll only draw 2A. (again hypothetical 2A here, 1.5 may be the max.) That being said... i wouldnt use a 2A as your primary or overnight charger though(unless you only sleep 3 hours ), no need for it..Since these phones dont have a replaceable battery your overnight charger should probably be 1A. Use a 2A during the day if you need a quick boost.

nugzo said:
Yeah it will degrade it quicker, but not significantly. I agree with the previous posts. Its fine to use a charger with higher amps than needed but its not good to use lower amps. (lower than 500ma) Lower amps will kill chargers quick. If usb is 500ma then these phones must be fine with variable amps (within its limits) I dont know what the variable numbers are but say its 500ma min, 2A max.. using a 3A charger or a 5A charger shouldnt make a difference in charge speed. It'll only draw 2A. (again hypothetical 2A here, 1.5 may be the max.) That being said... i wouldnt use a 2A as your primary or overnight charger though(unless you only sleep 3 hours ), no need for it..Since these phones dont have a replaceable battery your overnight charger should probably be 1A. Use a 2A during the day if you need a quick boost.
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I used a Samsung 0.7A OEM charger for a while for my previous phones and always thought that the power is capped by the output of the adapter. If it's rated 0.7A the adapter can output up to what it was rated for; That is wrong on that assumption. Using Current Widget app also appear to support this as well as it was drawing on my S3, 0.999 mA when this adapter as in. I have switched to the 1A adapter because of that; the read outs using the app still shows up as 0.999 mA.
http://forum.xda-developers.com/showthread.php?p=40630411#post40630411
If using a higher one is no good like 2A, I guess we would be able to see what Current Widget saids as well. Supposedly the phone pulls what it needs to my understanding.

the_scotsman said:
Using a higher current charger will degrade the life of the battery faster than normal. It will also be hotter when chraging, thus further degrading the life of the battery.
Bear in mind USB2.0 can only provide 500mA and makes charging slower.
Using a 2A charger ON OCCASION will be fine, but long term use will degrade your battery, it's that simple.
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I'd love to hear where your "simple" comment comes from? Facts, please. I will withhold my view until you can state sources... (Hint: heat will be the only factor in a properly designed system)

banksc said:
I'd love to hear where your "simple" comment comes from? Facts, please. I will withhold my view until you can state sources... (Hint: heat will be the only factor in a properly designed system)
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here's a source. HTC engineers decided to include the charger they did.

bob13bob said:
here's a source. HTC engineers decided to include the charger they did.
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Wow, aren't you a helpful one. There is much more to the H/W selection than what the charging circuit is capable of... Chargers don't "force" a current on the battery. The charging circuit draws what it needs from a charger, assuming it can supply what is drawn. A well designed charging circuit will draw no more than what the battery is capable of without damage. The only factor is heat, which should be accounted for at a nominal level. If heat was't properly accounted for, or they short changed the charging circuit (like the charger) there could be an issue long term.
As an application side note, I had a 2 or 2.1A charger on my Atrix 4G for the 2+ years I owned it and still on the original battery that will last me an 18hr day. You don't do anyone favors talking about stuff you don't know anything about.

banksc said:
Wow, aren't you a helpful one. There is much more to the H/W selection than what the charging circuit is capable of... Chargers don't "force" a current on the battery. The charging circuit draws what it needs from a charger, assuming it can supply what is drawn. A well designed charging circuit will draw no more than what the battery is capable of without damage. The only factor is heat, which should be accounted for at a nominal level. If heat was't properly accounted for, or they short changed the charging circuit (like the charger) there could be an issue long term.
As an application side note, I had a 2 or 2.1A charger on my Atrix 4G for the 2+ years I owned it and still on the original battery that will last me an 18hr day. You don't do anyone favors talking about stuff you don't know anything about.
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It's already documented that other chargers charge the phone faster. HTC included a slow charger for a reason. You don't know more about battery technology then they do. Fast chargers are like $5 for us on amazon. htc can buy them for a $1. There reason is not cost. Why do you think HTC inclduded the charger they did.
There is no perfect battery with unlimited recharge cycles no matter how perfectly designed. Fast charging won't cause you device to explode, but it will accelerate the regular degradation process.
Htc knew people would complain about slow charging, so they allow other chargers to charge the battery faster on case by case, even if it means degradation (slight to moderate) of the battery over time.
You read more about fast charging vs slow charging in the battery geek forums.

banksc said:
I'd love to hear where your "simple" comment comes from? Facts, please. I will withhold my view until you can state sources... (Hint: heat will be the only factor in a properly designed system)
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It comes from my own knowledge and experience. These are facts. If you choose not to believe them that's fine. And yes, I mentioned heat if you look back. And no, these are not properly designed systems.

The HTC One definitely takes a while to charge. What’s interesting however is that the charge curve gets the One to 85–90 percent under the normal 3 or so hours, it’s that last ten percent that takes forever. I also have confirmed that Qualcomm’s Quick Charge is not being used on the HTC One, for whatever reason, possibly to maximize compatibility with the portable USB battery chargers that are now proliferating. The PMIC is there, it just isn’t enabled. My guess would be that HTC wants to prioritize battery longevity and minimize any even potential extra wear since the battery on the One is sealed inside.
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source: http://www.anandtech.com/show/6747/htc-one-review/3
told ya =)

Is there a way to turn off the fast charging in the OS?

I plan to use this phone for many years, so I'm worried that the fast charging might do damage to the battery in the long term or shorten its lifespan, so I'd rather charge it "slower". Is there a way to turn off the fast charging in the OS? Or is my worry unsubstantiated?

513263337 said:
I plan to use this phone for many years, so I'm worried that the fast charging might do damage to the battery in the long term or shorten its lifespan, so I'd rather charge it "slower". Is there a way to turn off the fast charging in the OS? Or is my worry unsubstantiated?
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You made my night... Slower charger kills battery not fast charging.. fast charge save battery to be honest. And you dont have to be worry since the batteries now are LI-lon . Go get info in google about the batteries . All i can say you got infos wrong.
Sent from my ONEPLUS A3003 using XDA-Developers mobile app

Agree with previous post. But if it makes you feel better, just don't use a dash charger...
Very simple.

lummujaj said:
You made my night... Slower charger kills battery not fast charging.. fast charge save battery to be honest. And you dont have to be worry since the batteries now are LI-lon . Go get info in google about the batteries . All i can say you got infos wrong.
Sent from my ONEPLUS A3003 using XDA-Developers mobile app
Click to expand...
Click to collapse
OK. I didn't know.
I was speaking from my past experience with Samsung Galaxy Note 4. I bought couple of original Samsung batteries and rotate them throughout daily usage. I noticed a significant difference in battery life comparing the ones that I used fast charge on vs the ones I didn't. After that I stick to NOT using fast charge.
Of course, that's nothing scientific. And Samsung uses a different fast charge mechanism (higher voltage) than OnePlus (higher current), so there could be difference there too.

Because Dash Charge seems to be re-labeled Vooc charging from OPPO, I can tell you, that the last two years with charging minimum one times every day, there is no bad effect on the battery (still the first one).
Sent from my Find7 using XDA-Developers mobile app

513263337 said:
OK. I didn't know.
I was speaking from my past experience with Samsung Galaxy Note 4. I bought couple of original Samsung batteries and rotate them throughout daily usage. I noticed a significant difference in battery life comparing the ones that I used fast charge on vs the ones I didn't. After that I stick to NOT using fast charge.
Of course, that's nothing scientific. And Samsung uses a different fast charge mechanism (higher voltage) than OnePlus (higher current), so there could be difference there too.
Click to expand...
Click to collapse
Samsung devices are notorious for killing batteries and its more likely hardware than it is the battery itself, u will be fine

I have a similar question: does it make any problem if I leave the phone in (dash) charge for the whole night? I mean, if I sleep for 7hrs I'll have 1h of fast charging and 6hrs of nothing-but-charger-heating. Will this habit hurt the phone's battery or the charger itself?

513263337 said:
I plan to use this phone for many years, so I'm worried that the fast charging might do damage to the battery in the long term or shorten its lifespan, so I'd rather charge it "slower". Is there a way to turn off the fast charging in the OS? Or is my worry unsubstantiated?
Click to expand...
Click to collapse
I use Samsung 1.5 Amp charger and keep my battery between 40% to 80%
I think these are best for long term usage.

repsol89 said:
I have a similar question: does it make any problem if I leave the phone in (dash) charge for the whole night? I mean, if I sleep for 7hrs I'll have 1h of fast charging and 6hrs of nothing-but-charger-heating. Will this habit hurt the phone's battery or the charger itself?
Click to expand...
Click to collapse
I used a samsung S3 before and overnight charging killed my battery! Bless samsung for making battery removable on S3!
If i were you, I wouldn't leave my precious OP3 on an all-night charge.

iam_adarsh said:
I used a samsung S3 before and overnight charging killed my battery! Bless samsung for making battery removable on S3!
If i were you, I wouldn't leave my precious OP3 on an all-night charge.
Click to expand...
Click to collapse
Well, it was my first thought, but everyone in this topic is telling me that OP works different than Samsung!

iam_adarsh said:
I used a samsung S3 before and overnight charging killed my battery! Bless samsung for making battery removable on S3!
If i were you, I wouldn't leave my precious OP3 on an all-night charge.
Click to expand...
Click to collapse
that's the problem of the charger or the phone itself. thecharger is designed not to charge when the battery is full. What I want to say is you experienced an accident and sorry for you.
The most serious threat to the battery is high temperature. OnePlus 3 reduce the charging heat by its dash charge. The dash charge pushes low voltage directly to the phone, which mitigates the heating problem by pushing high electric current and making the voltage transition process in dash charger. Most of other phones still use high voltage because they fail to create high current. recalling the physics in high school, the power is current multiplied by voltage and energy equals to power multiplied by time. than you would understand the powerful feature of dash charge

dlhxr said:
that's the problem of the charger or the phone itself. thecharger is designed not to charge when the battery is full. What I want to say is you experienced an accident and sorry for you.
The most serious threat to the battery is high temperature. OnePlus 3 reduce the charging heat by its dash charge. The dash charge pushes low voltage directly to the phone, which mitigates the heating problem by pushing high electric current and making the voltage transition process in dash charger. Most of other phones still use high voltage because they fail to create high current. recalling the physics in high school, the power is current multiplied by voltage and energy equals to power multiplied by time. than you would understand the powerful feature of dash charge
Click to expand...
Click to collapse
The power is current multiplied by voltage so what's the difference between high current mutiplied by low voltage versus low current multiplied by high voltage ?
2V x A = V x 2A

lapocompris said:
The power is current multiplied by voltage so what's the difference between high current mutiplied by low voltage versus low current multiplied by high voltage ?
2V x A = V x 2A
Click to expand...
Click to collapse
qc3.0 uses low current and high voltage. Dash uses high current and low voltage. As a result, they have similar power and both charge quickly. However, the heating problem is more serious for qc 3.0. The difference of the battery voltage and charger voltage is the leading factor that determines the transition efficiency. The bigger the difference is, the more heat charging process generates.
So~ you could look up for qc3.0. for mi 5, it has three adaptive mode: 5V2.5A、9V2A、12V1.5A. for dash, we have 5V4A

repsol89 said:
I have a similar question: does it make any problem if I leave the phone in (dash) charge for the whole night? I mean, if I sleep for 7hrs I'll have 1h of fast charging and 6hrs of nothing-but-charger-heating. Will this habit hurt the phone's battery or the charger itself?
Click to expand...
Click to collapse
There is no problem with leaving your phone on the charger. I do this with every phone since years.
If people experience something bad with it, their phone or battery are broken. The current tech just keeps the battery at full capacity once it's full. Never had any problem.

So many "opinions" but mostly incorrect. The answer to the OPs question is that you don't have to worry about quick charge destroying your battery. It will not have significant impact on your battery capacity. I would have been more worried about breaking the usb type-c port(see point 2 below). All things considered, after 2-3 years you will probably buy a new phone anyway and also you can always buy a replacement battery cheap. But you can simply use a normal charger which delivers <3A with 5V so you don't have to worry about anything.
1- Slow charge does not damage lithium-ion chemistry batteries. You can read about lithium-ion charging here. But neither fast charge will damage lithium-ion as long as the battery temperature is not extremely high. Also temperature at different charge stages effect the capacity decrease (source) But you will be fine as long as the battery temperature is less than 45C. The charging IC should stop the charging process if it exceeds it anyway.
2- Qualcomm's quick charge is much better than voop/dash charge from an engineering standpoint. This is why also USB organization's power delivery (PD) standard uses similar scheme. The problem is the cable and the connector. The maximum allowed current at 5V is 3A with usb type-c connector (source). If you provide more current, you need to use a thicker cable(dash/vooc cables). But you can't change the connector, and it may damage your connector in the long run to use 3+A currents to charge. Because there is a contact resistance (R) and the power lost in the connector is square of current (I) times R. Meaning R*I^2, it will wear off the connector faster. This is why some companies with some engineering skills opt in to use higher voltages instead of higher currents.
3- You can't push more current to lithium-ion battery than it accepts. The maximum current is voltage delta (between charging voltage and battery voltage) divided by internal resistance. This is why you can charge empty battery much faster. If you use an app like Ampere from play store, you can see the voltage of your battery before and after you plug in your charger. If you plug in a normal charger, you will see that it goes up a little bit. If you plug a quick charger it goes up to ~4.35V
4- Yes, there is conversion inefficiencies for quick charge inside the phone, and it will warm up the "phone" and battery only indirectly. The conversion IC are normally >90% efficient (source). This does not mean that your battery will be destroyed. It is perfectly fine to charge lithium-batteries with up to 45C temperatures (source).
4- If overnight charging killed your battery, your battery was faulty (or you had 3rd party battery?). The battery should be capable of holding 4.35v charge. You would need to store battery at 4.35V full charge for over 3 months to loose 20% capacity (http://batteryuniversity.com/learn/article/how_to_store_batteries). Having full charge few hours overnight won't destroy it unless your battery or device is faulty.
With all this information, I would rather opt in for USB-PD/Qualcomm Quick Charge solutions than VOOC/DASH solutions. I think eventually only USB-PD will remain and everybody will use it as a standard only.

Is it possible to turn off the dash charge?

Hi,
Is it possible to turn off the dash charge? 5T is charged only overnight cause it can last the whole day anyway.
PS: I can turn off Fash Charge in my Samsung Note. So it saves battery if I charge only overnight and don't need fast charge feature.

There is no stock option for this. Maybe a custom kernel can support it or a custom kernel that doesn't support it at all would also be a possibility in theory.
I would suggest using a normal power adapter instead of the Dash charging one. Even a normal USB C cable prevents Dash charging as it can only be used with OnePlus' own cable. So maybe get a cheap USB C cable and use that?

Use a low amperage charger. Something like 1000mah. This will slowly charge your phone overnight. But make sure you use a quality charger.

Why would you want to do this? The OnePlus dash charger works differently from other chargers in that it holds the heat in the charging block. If you use a standard adapter you would transfer the heat to the phone while charging. I would NOT recommend doing this.
Sent from my ONEPLUS A5010 using Tapatalk

I use an Anker IQ 6-port Charger with a couple of fairly good quality cables.
I personally try to avoid any kind of fast charge because it will end up damaging the battery life faster than "standard" charge, even if the heat is absorbed by the DASH charger block. IQ Charge adapts itself with the needs of the device connected.
And my unit stays cool if I touch it while its charging.

Charge however you want. But for me, dash charger while getting ready in the morning or when you have a free half hour. Forget about charging overnight. I don't know your usage but for me, this works. The phone just sits on my nightstand without connecting overnight and I lose a very minimal battery amount.
Sent from my ONEPLUS A5010 using Tapatalk
---------- Post added at 05:47 PM ---------- Previous post was at 05:43 PM ----------
https://www.guidingtech.com/61180/dash-charging-quick-charge. I'll just leave this here.
Sent from my ONEPLUS A5010 using Tapatalk

That's why we can choose
Just not in a software way.

I choose to use wireless charging using a receiver.
通过我的 ONEPLUS A5010 上的 Tapatalk发言

DragonMessor said:
Use a low amperage charger. Something like 1000mah. This will slowly charge your phone overnight. But make sure you use a quality charger.
Click to expand...
Click to collapse
It's fine at even less than 1 amp. We have two 5Ts in the house and charge them at night at 0.35 - 0.45 amp.

I saw the dash reduce Ampare when pass above 80%.
(When not rush I use official iPhone 1Amp charger.)

Use 5V/2A standard charger to standard usb type c.
Oneplus 5t = 5V/4A
Quick Charge = 9V/2A
Dash n QC have more power!

I'm using an old 1A Samsung power adapter and dash charge cable and in addition I also use Battery Charge Limit app to limit charging the battery to 80%.
https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002

Headbanger1982 said:
I personally try to avoid any kind of fast charge because it will end up damaging the battery life faster than "standard" charge
Click to expand...
Click to collapse
No, it does not, especially not with dash charge. The excess heat is stored in the charger and is not transferred to the phone, and the heat is the only thing that degrades the battery faster.

SilverSurger said:
No, it does not, especially not with dash charge. The excess heat is stored in the charger and is not transferred to the phone, and the heat is the only thing that degrades the battery faster.
Click to expand...
Click to collapse
Your informations are not correct.
Dash (or VOOC, which is the very same technology since OnePlus is an Oppo brand) uses high current fast charging instead of high voltage charging (QuickCharge 2.0/3.0 uses high voltage) and the circuit that produces heat in phones that are not Dash/VOOC compliant is inside the phone, while in Dash/VOOC is inside the charger.
Oppo and OnePlush themselves have acknowledged that it makes SAFE to use the phone while it is quickcharging, NOT that the battery is not getting damaged by the use of a fast charging method, even if it charges at a lower voltage and higher current.
The use of any fast charge technology implies to shorten out the overall battery life.

SilverSurger said:
No, it does not, especially not with dash charge. The excess heat is stored in the charger and is not transferred to the phone, and the heat is the only thing that degrades the battery faster.
Click to expand...
Click to collapse
Just because they moved a bunch of the power regulation stuff to the charger doesn't mean the battery doesn't still get warmer. If you push 4 amps of current into it, it will heat up more so than when it receives, 1 amp.
Now you have me curious though, I guess I'll have to pay close attention to the battery temp next time I charge my battery. I've never used the dash charger, but perhaps I'll have to get it out of the box, and test with it as well just to see what kind of temps I see with a more powerful charger as well. I'm curious to see how much temperature difference there is.
I know on my Nexus 5X my phone always lasted long on a single charge when slow charged (0.35 amps), vs using the factory 3 amp charger.

Constantly topping up the battery overnight for 5-6 hours (assuming your slow charger will charge it to 100% in 2-3 hours) is worse than using Dash to charge it quickly in bursts in the morning and night when you have a spare 30 minutes.
I would never leave a phone stuck on a charger overnight. Especially since even the slowest charger in the works will charge the phone to 100% in three hours or so.

xocomaox said:
Constantly topping up the battery overnight for 5-6 hours (assuming your slow charger will charge it to 100% in 2-3 hours) is worse than using Dash to charge it quickly in bursts in the morning and night when you have a spare 30 minutes.
I would never leave a phone stuck on a charger overnight. Especially since even the slowest charger in the works will charge the phone to 100% in three hours or so.
Click to expand...
Click to collapse
I don't charge my phone over night either but by using above mentioned Battery Charge Limit app it is possible to stop charging when desired battery level has been reached.

Squabl said:
I don't charge my phone over night either but by using above mentioned Battery Charge Limit app it is possible to stop charging when desired battery level has been reached.
Click to expand...
Click to collapse
That would be a good idea to do. Although the best is to just Dash charge in short 30 minute bursts when you can.

Headbanger1982 said:
Your informations are not correct.
(...)
The use of any fast charge technology implies to shorten out the overall battery life.
Click to expand...
Click to collapse
How does it imply that? Heat is the only factor. Phone is not getting hot(ter than slowly charging) when charging.

What is the truth? With the rapid charging the battery deteriorates faster or better a slower charging?