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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 =)
Has LG added real quick charge 2.0 to lg g4 in android 6.0 (Marshmallow)?
I know that officially, the phone has qc 2.0 but in real life the results are even not close to real QC 2.0 (in lollipop).
Can somebody who has android 6.0, check is?
QC 2.0 is within the chipset, you need QC Charger to check if it fast charger the phone or not. Give it half and hour to see how it turns out and compare it with another charger.
As per QC2.0 standards you should be getting 2% per minute for the first 60% (i.e. 0-60% in 30 minutes) and will then slow down. Like most other people here I only get about 1.2% per minute, which is under 40% in 30 minutes, using Tronsmart QC2.0 charger.
This is on Lollipop. Wonder if anything changed on Marshmallow.
iKillCypher said:
QC 2.0 is within the chipset, you need QC Charger to check if it fast charger the phone or not. Give it half and hour to see how it turns out and compare it with another charger.
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Actully, it does support, but probably LG's software disable is in 5.1.
The problem is that I do not have 6.0 to check is they able in a new 6.0 Marshmallow.
shady121 said:
Actully, it does support, but probably LG's software disable is in 5.1.
The problem is that I do not have 6.0 to check is they able in a new 6.0 Marshmallow.
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Click to collapse
You can install Marshmallow if You are using H818 Version Phone.Please check my below Post.
http://forum.xda-developers.com/showpost.php?p=64112578&postcount=1288
it seems to work on my 818N(HKG) running V20a (M), as on lock screen I get a "fast charging" notification (using Asus charger that has a high voltage mode).
Your 2% per minute rule work only on the lower end of the battery: capacity % bits are longer to get on the last end of the charge, so when you test your charging speed you need to make sure you test on the low percentage levels, as this is where the quick charging takes most of its effects (go from 0 to 60% in 30 minutes, but the last bit lasts about an hour or more if you read this http://www.tomsguide.com/us/fastest-charging-phones,review-2995.html).
To be explicit, G4 takes 1h02 to reach 80%, then another 34 minutes before reaching 100% charge
you can google about charging profile if you are interested in the topic, or read some tutorials like this one http://www.ti.com/lit/an/snva557/snva557.pdf
If you start from say 10%, how much charge does it gain in the first 30 minutes? That's all that matters.
I get only 36% which is disappointing considering there are HTC Ones that reach 60% in the same time, although the battery is slightly lower at 2840mah.
And Qualcomm's specs indicate a 3300 mah battery should reach 60% in 30 minutes.
there might be a problem with your charger (as in AC wall plug), as Tom's testing from 5 and reaches 42% in 30 minutes.
Or simply that your unit does not fast charge ? What does your lock screen say? Charging or fast charging?
It does support in lollipop, just no quick charge notification in the phone
Sent from my LG-H815 using XDA Free mobile app
ManuLM said:
there might be a problem with your charger (as in AC wall plug), as Tom's testing from 5 and reaches 42% in 30 minutes.
Or simply that your unit does not fast charge ? What does your lock screen say? Charging or fast charging?
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On Lollipop it does not say fast charging even if it is. From Marshmallow I believe it indicates fast charging on notification.
doublewong said:
It does support in lollipop, just no quick charge notification in the phone
Sent from my LG-H815 using XDA Free mobile app
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It's not, the difference if only 23 percent. Moreover, the voltage should increace from 5v to 9v or 12v but in LG g4 even with QC 2.0 charger, the voltage isalway 5v.
What you get from your QC charger is just 2 amp instead 1.8 amp of original charger, this is what makes the 23% difference.
5.1/6.0 same : QC2.0 working....No need nothing adding...
kabirjedi said:
5.1/6.0 same : QC2.0 working....No need nothing adding...
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Again, you dont get real qc2. You probably havent even seen qc2.
What you get is. 5v 2A instead 5v 1.8v.
Your dont get qc2 voltage.
I dont get why people think that they get qc2 when other phones with qc2 charging much faster. You get higher ampr not voltage that should be with qc2.
808 have an abitilty to control voltage to get 9v or 12v. But it seems like lg stopped it.
shady121 said:
Again, you dont get real qc2. You probably havent even seen qc2.
What you get is. 5v 2A instead 5v 1.8v.
Your dont get qc2 voltage.
I dont get why people think that they get qc2 when other phones with qc2 charging much faster. You get higher ampr not voltage that should be with qc2.
808 have an abitilty to control voltage to get 9v or 12v. But it seems like lg stopped it.
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0-60% crk 40 minute. This is not qc2.0? .ok..........
Ok lol, nice.
Which version and charger?
kabirjedi said:
0-60% crk 40 minute. This is not qc2.0? .ok..........
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I just checked with my normal charger and 5.1.
I got 48% for 40 minutes.. Not so big difference for QC2.
the shady man has a good point
All I can say is, when I plug the bundled LG charger, I get no notification of fast charge. When I plug a 5V 2.1A charger I also do not get the fast charging notification .
But when I plug my Asus Zenfone2 charger which can climb up to 9V 2A, I get the fast charge notification. I need to check how fast it charges.
shady121 said:
It's not, the difference if only 23 percent. Moreover, the voltage should increace from 5v to 9v or 12v but in LG g4 even with QC 2.0 charger, the voltage isalway 5v.
What you get from your QC charger is just 2 amp instead 1.8 amp of original charger, this is what makes the 23% difference.
Click to expand...
Click to collapse
Just found the old photo, that is captured from 5.1 with qc2.0 charger, although the photo is out of focus, but you can see that the voltage is almost 9v
Sent from my LG-H815 using XDA Free mobile app
doublewong said:
Just found the old photo, that is captured from 5.1 with qc2.0 charger, although the photo is out of focus, but you can see that the voltage is almost 9v
https://www.dropbox.com/s/563ae0sy9n6600f/20150923_134433.jpg?dl=0
Sent from my LG-H815 using XDA Free mobile app
Click to expand...
Click to collapse
Can you upload the picture?
doublewong said:
Just found the old photo, that is captured from 5.1 with qc2.0 charger, although the photo is out of focus, but you can see that the voltage is almost 9v
Sent from my LG-H815 using XDA Free mobile app
Click to expand...
Click to collapse
I wish it reached the peak 12V at 1.5A that will charge the battery to QC2.0 specs of 60% in 30 minutes.
According to Ampere, the phone is charging at 1100mah and 4v with the factory cable and adapter. Battery is at 20% when I started. Are those numbers right because It seems like the fast charge should be higher. It does say "Fast charging" on the lock screen.
Fuzzy13 said:
According to Ampere, the phone is charging at 1100mah and 4v with the factory cable and adapter. Battery is at 20% when I started. Are those numbers right because It seems like the fast charge should be higher. It does say "Fast charging" on the lock screen.
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Click to collapse
I don't have the p2xl...I have a 6p but my phone starts off allow when fast charging with the OEM charger. But after a couple minutes it ramps up to around 2200mAh..... It's like it had to warm up a bit...... Does yours do that?
Fuzzy13 said:
According to Ampere, the phone is charging at 1100mah and 4v with the factory cable and adapter. Battery is at 20% when I started. Are those numbers right because It seems like the fast charge should be higher. It does say "Fast charging" on the lock screen.
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Click to collapse
That's not fast charging and no, that's not ok.... it looks like the charging rate may be capped at 10.5W. If true, this is not cool.
Fuzzy13 said:
According to Ampere, the phone is charging at 1100mah and 4v with the factory cable and adapter. Battery is at 20% when I started. Are those numbers right because It seems like the fast charge should be higher. It does say "Fast charging" on the lock screen.
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Click to collapse
This topic has come up before. Personally, I don't think the app is reading the actual input. If it was measuring somewhere on the input line it wouldn't show the discharge rate when the charger is disconnected. So wherever it is measuring is not designed to measure what is coming in from the charger. Fast charging is 9v at 2 amps. There is probably some special circuit getting it to the battery and not into the phone guts, which are running at 5v.
If you have doubt that it is fast charging, just try timing recharging time with different adapters.
On Ampere, mine shows 5v at 1 amp for every charger including stock, other than a 1 amp charger. For that, it'll show 4v at 1 amp. But the actual charging time with the stock charger is much faster than using a 5v at 2.4 amp charger. If you get a similar recharge rate with a 1 amp charger and the stock charger, then Ampere would be correct. But it should be a much different recharge time.
If someone uses an inline module in between the charger and phone, then that'll get my attention. But I haven't seen where someone has done that. Supposedly someone has done that, but no one has linked to any post in the prior thread about this.
Voicebox said:
This topic has come up before. Personally, I don't think the app is reading the actual input. If it was measuring somewhere on the input line it wouldn't show the discharge rate when the charger is disconnected. So wherever it is measuring is not designed to measure what is coming in from the charger. Fast charging is 9v at 2 amps. There is probably some special circuit getting it to the battery and not into the phone guts, which are running at 5v.
If you have doubt that it is fast charging, just try timing recharging time with different adapters.
On Ampere, mine shows 5v at 1 amp for every charger including stock, other than a 1 amp charger. For that, it'll show 4v at 1 amp. But the actual charging time with the stock charger is much faster than using a 5v at 2.4 amp charger. If you get a similar recharge rate with a 1 amp charger and the stock charger, then Ampere would be correct. But it should be a much different recharge time.
If someone uses an inline module in between the charger and phone, then that'll get my attention. But I haven't seen where someone has done that. Supposedly someone has done that, but no one has linked to any post in the prior thread about this.
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Ah, so you didn't read the linked XDA article by Nathan K. but commented in this way?
Ampere is giving you the charge with your battery drain. You're supposed to measure what your drain is in the app without plugging in the charger, then add that to your measurement when you plug it in. You will be somewhere around 1500mah at that point (400-500mah drain).
That is because android limits your charge rate when the screen is on to 1500ma. Your phone will charge faster with the screen off, that is for the thermal throttling. Ampere can't measure with the screen off. Use accubattery to see that, you'll need to leave the screen off for 5-10 minutes to get an accurate reading.
v12xke said:
Ah, so you didn't read the linked XDA article by Nathan K. but commented in this way?
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Click to collapse
No. I have no idea who Nathan k is. No one has pointed me to wherever he posts. They just keep telling his name as if everyone knows who he is. Paste a link.
Edit: Here's where I saw it before, and I did try to find him on Google +. I wasn't told there was an XDA article.
https://forum.xda-developers.com/showpost.php?p=74519553&postcount=13
Voicebox said:
No. I have no idea who Nathan k is. No one has pointed me to wherever he posts. They just keep telling his name as if everyone knows who he is. Paste a link. Edit: Here's where I saw it before, and I did try to find him on Google +. I wasn't told there was an XDA article.
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Click to collapse
Ah okay, well the link to "capping" was in my post just above, but you probably missed it. See the article here. As for who he is... he has been taking over for Benson Leung in testing all things USB-C. His G+ link is in the article. He does a LOT of testing and publishes his findings. :good:
v12xke said:
Ah okay, well the link to "capping" was in my post just above, but you probably missed it. See the article here. As for who he is... he has been taking over for Benson Leung in testing all things USB-C. His G+ link is in the article. He does a LOT of testing and publishes his findings. :good:
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Ok, thanks. I know about Benson Leung. I had seen the orange color in the text, but in my brain that was highlighting and not a link.
I stopped using the stock charger after about 5 days because I worry about heat and things like the 6P battery issue. But it seems like I don't have to worry so much if they've dropped the charging current for the whole charging time. That also means I can keep using my old 5v at 2.4 amp or 2.0 amp chargers during the day and not miss much since it is going to be charging at about 10 watts either way. It just won't have a few minute start at higher watts. At night I use a 1 amp charger.
I don't blame Google for dropping things down since the 6P is said to have charged at 15 watts and the dying batteries cost them a lot of dollars replacing user's phones. Project Fi even started sending Pixels as replacements when they ran out of 6P refurbs until corporate stopped that practice.
But they do claim "Up to 7 hours of battery on 15 minutes of*charging". Wonder if that was before or after they messed with the charging current. If I wasn't on Project Fi, this would be one more reason not to ever have considered this phone to begin with. I almost never need to rapid charge and then go somewhere away from an outlet, but other people do. I was also forced to buy an external battery since the 5X battery life sucked. So I do have a backup.
Hello guys,
To offert at my battery the best treatment I'm looking for a lower amperage wall charger for my Pixel 2XL.
Between 1 and 1.5 Amp it will be excellent. I read some interesting suties about battery life and how manage it and fast charge is part of that.
Thank you all anf have good evening.
I am sure it will charge on either one, but how fast who knows? If you are rooted and have Magisk, download the ACC module and you can control your charging that way instead.
Le_Combattant said:
Hello guys,
To offert at my battery the best treatment I'm looking for a lower amperage wall charger for my Pixel 2XL.
Between 1 and 1.5 Amp it will be excellent. I read some interesting suties about battery life and how manage it and fast charge is part of that.
Thank you all anf have good evening.
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Click to collapse
Older USB chargers are mostly slow 1A chargers, like the cube Apple chargers
Droid_Nut said:
I am sure it will charge on either one, but how fast who knows? If you are rooted and have Magisk, download the ACC module and you can control your charging that way instead.
Click to expand...
Click to collapse
I'm not rooted and I don't think I gonna it
Le_Combattant said:
Hello guys,
To offert at my battery the best treatment I'm looking for a lower amperage wall charger for my Pixel 2XL.
Between 1 and 1.5 Amp it will be excellent. I read some interesting suties about battery life and how manage it and fast charge is part of that.
Thank you all anf have good evening.
Click to expand...
Click to collapse
I am an electrical engineer, and have some knowledge about how Li batteries function.
I have always wondered this, I always see people mentioning that slower charging is better for the longevity of Li-ion batteries. There is always a trade-off here. Slower charging also means the battery takes much longer to charge, and the battery stays hotter for longer period of time, which should affect it's lifetime. Fast charging also does the same thing, but the temperature is much hotter but is exposed for shorter period of time.
Now these is merely a speculation on my part, I don't have any theoretical or experimental evidence to back this up - I think regular 5V 2A charging is a balance between those two scenarios.
Also, I recall that the peak charging current is limited in P2XL, so using the stock charger shouldn't harm that much either.
Pixel 2XL is my first smartphone who do not Come hot when it charge so...
But I know that high temperature are not the best things for battery in general.
And about the level of charge ? Some people said they stop at 80% to manage battery
suhridkhan said:
I am an electrical engineer, and have some knowledge about how Li batteries function.
I have always wondered this, I always see people mentioning that slower charging is better for the longevity of Li-ion batteries. There is always a trade-off here. Slower charging also means the battery takes much longer to charge, and the battery stays hotter for longer period of time, which should affect it's lifetime. Fast charging also does the same thing, but the temperature is much hotter but is exposed for shorter period of time.
Now these is merely a speculation on my part, I don't have any theoretical or experimental evidence to back this up - I think regular 5V 2A charging is a balance between those two scenarios.
Also, I recall that the peak charging current is limited in P2XL, so using the stock charger shouldn't harm that much either.
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Click to collapse
I use a 5 watts charger and the phone stay completely cold during the charge process.
Also there was a recent 2017 scientific paper that tested what degraded the battery. It's a really interesting read with many tested model.
https://www.researchgate.net/profil...e-model-under-different-charging-stresses.pdf
Number 1 cause is high battery voltage at the end, second one is battery charging speed. Any speed faster than 1c will degrade the battery much faster.
This is why i charge at 5w plus stop charging at 80% (unless i know I'll need 100% that day, where i fully charge, but for my usage 80% is more than enough for the usual day).
von_block said:
I use a 5 watts charger and the phone stay completely cold during the charge process.
Also there was a recent 2017 scientific paper that tested what degraded the battery. It's a really interesting read with many tested model.
https://www.researchgate.net/profil...e-model-under-different-charging-stresses.pdf
Number 1 cause is high battery voltage at the end, second one is battery charging speed. Any speed faster than 1c will degrade the battery much faster.
This is why i charge at 5w plus stop charging at 80% (unless i know I'll need 100% that day, where i fully charge, but for my usage 80% is more than enough for the usual day).
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Click to collapse
I charge my phone every 48h and when it is full I unplug it from wall charger. And I charge it from 20-25% (some time I go lower because of my usage)
It's your famous amazon wall charger?
Le_Combattant said:
I charge my phone every 48h and when it is full I unplug it from wall charger. And I charge it from 20-25% (some time I go lower because of my usage)
It's your famous amazon wall charger?
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Click to collapse
I download AccuBattery and charge my phone from 25% to 80% max. The app detect directly the stock capacity of my battery (3520mAh) but after my charge, the new capacity estimated is 2982%. Is the first value is reliable or I have to do some other charges?
You have to wait for about 10 cycles. It says in the application something like that.
I have had my S22 base for about a week, and while I am still concerned with the life I'm getting (same apps and usage pattern, about 4+ hours of SOT and 15 hours of mixed use) vs the S9, I had decided to keep it until ...
I can't get the thing to super/fast charge. I do not have a Samsung charger (waiting until I get my voucher) but do have a number of 15W and 25W PD-compliant chargers that work on everything from my S9 to my laptop. Unless I turn the phone off, all of those chargers charge S22 at a rate of 10-20% per hour, with Accubattery readings in the 200-1100 maH range, NEVER a value over that. The battery temp and voltage are well in spec. It is currently plugged into my laptop PD compliant charger at a rate of 900 mA with a "time to 100%" of 30h.
Likewise, I bought 2 car chargers that are S21 certified as well as QC3.0 and PD3.0. It has a 30W port. I used the cable that came with either charger (I've tried a ton of cables) and sometimes it gives a "0mA" reading while other times it goes 200mA-800mA at a good voltage. That means while I don't lose charge, I also don't gain. On my 30 min drive home I went from 23% to 24% with dark mode and no apps running.
Finally, to extend the mystery, depending on which aftermarket charger I use the phone itself thinks I'm Fast Charging or Super Fast Charging, reporting that on the lock screen and battery screen. On that screen it says something like 30m to 100% even though the observed charge rate is much lower.
Samsung won't talk to me unless I'm using a Samsung charger and I can't wait until I get the voucher/those are in stock ... I have 5 days to return it and unless you can help me (Obi Wan) I'll be back on that track.
icewiz1 said:
I can't get the thing to super/fast charge. I do not have a Samsung charger
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I use my old 25W (original from N10+) charger and it takes about 1 hour to charge from 15-20% to full. I have the DevCheckPro app showing me at the start 17-18W and about 6-7Amps of charge load initially, at the beginning.