Database Users

Some battery thoughts and testings..

Ok, so my battery can go from 100% full charge (overnight) to like 96% within first couple of minutes. I've done the plug/pull trick and it seems to help for a very short while and it will go back to same issue again and again.
Recently, I just bought the $10 2 batteries with external charger pack and had the extra el cheapo battery all charged up using the external charger. To my surprise, I found that the battery charged with external charger drain very accurately.
I've done some testing for a couple of days now by basically draining out the battery and replace it with a fresh one from the external charger without using the wall adapter.
So my thinking is when charging with wall charger, I think the phone does not evenly charges the battery cells because there are so many moving parts while the phone is on and charging. Therefore, it causes the cell to be charged unevenly that leads to quick battery drain.
With the external charged battery, I went from 100% to 90% in 6 hours time with light usage and GPS on.
Give it a try to see if you get different experience with your battery.

I have been doing the same these past couple of weeks (ever since I rooted my 2.2).
My external charger will be here today (it's now saturday morning cst) and I ordered it yesterday. Gotta love amazon one day shipping.
So far I have observed some very interesting charging habits the evo displays when charging with it's included wall charger and stock and extended batteries.

i went 3 days 12 hours and 46 minutes on a single charge, that is with using the stock battery and a regular wall charger, yes i'm rooted and i used setcpu to set my frequency to 614 when screen on, and 245 when screen off, at night when i go to sleep i put the phone into airplane mode, and overall usage was cut back to light to moderate usage, i was trying to see how long i could actually go on the stock battery, and i must admit i'm very impressed.
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I think the general concensus was that the phone doesn't trickle charge. It will hit full then stop charging to a point then will charge again, all while saying 100%
I charged to full then while plugged in it range gps and iheartradio for 20 minutes, unplugged and it dropped to 92 within 5 minutes

Same here. I'll unplug it, browse the web while eating breakfast (about 10/15 minutes) and today I dropped to 89%. But its been two hours since then with some light texting and more browsing im now at 80%.

pinoyxpryde said:
I think the general concensus was that the phone doesn't trickle charge. It will hit full then stop charging to a point then will charge again, all while saying 100%
I charged to full then while plugged in it range gps and iheartradio for 20 minutes, unplugged and it dropped to 92 within 5 minutes
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Click to collapse
granted be the trickle charge is with using the stock usb connecter style wall charger right, i never use that thing unless im connected to the pc, i have a actual regular wall charger that came on another phone i used to have before my Evo, lol.

Update: Yep this morning I replaced my battery that was charged by the external charger that I bought with the bundle and same result. On average, my battery drains at the rate of 1.5% per every hour on light usage with GPS on.
I think from now on, I won't charge the phone using the default charger overnight.

vboyz103 said:
Update: Yep this morning I replaced my battery that was charged by the external charger that I bought with the bundle and same result. On average, my battery drains at the rate of 1.5% per every hour on light usage with GPS on.
I think from now on, I won't charge the phone using the default charger overnight.
Click to expand...
Click to collapse
So you take your battery out at night and charge it with an external charger?

Leaving the battery charging all night is bad for the batteries lifespan, that is why htc and many laptop companies implement this feature.
Stop complaining about it. Its only one cell and it has nothing to do with evenly charging, its regulated by the onboard charging system.
Sent from my PC36100 using XDA App

lehalter said:
So you take your battery out at night and charge it with an external charger?
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Click to collapse
No I have 2 batteries, and I used one of them throughout the day including leaving it overnight uncharged, then in morning I swap it out with the one that was fully charged from external charger.

mastermarc said:
Leaving the battery charging all night is bad for the batteries lifespan, that is why htc and many laptop companies implement this feature.
Stop complaining about it. Its only one cell and it has nothing to do with evenly charging, its regulated by the onboard charging system.
Sent from my PC36100 using XDA App
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LOL, I found this statement is bogus because if you don't leave it charged up overnight then what do you do to recharge it? Come on man! Batteries are meant to be charged up over a period of time.
I'm not saying my understanding of uneven charge distribution is rock solid, but at least I backed it up with some of my own studies.

I just always do my overnight charge with the phone OFF.
Sometimes in the morning I'll also do the unplug, re-plug, wait for green trick.
As long as I don't use 4G, my battery life is GREAT.
My 4g consumption is probably worse because I've tweaked the settings to retry more often - default was 5 minutes between retries.
I guess for people that get calls late at night or don't have a home land-line, turning it off at night is not feasable. But it does get around that immediate drop problem.

They charge at a near constant rate until they are full, after that it is BAD to continue topping them off, please do some research on lithium charging techniques as your "testing" clearly hasn't taught you much if anything about the chemistry.
Sent from my PC36100 using XDA App

mastermarc said:
They charge at a near constant rate until they are full, after that it is BAD to continue topping them off, please do some research on lithium charging techniques as your "testing" clearly hasn't taught you much if anything about the chemistry.
Sent from my PC36100 using XDA App
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Lol you clearly have no idea what you are talking about. The phone doesn't charge at a constant rate until it's full. It would be disastrous for LiCo chemistry if it maintained 0.66C up until it hit 100%. The cell would cook itself to death.
The correct charging profile for the Evo is that it charges constant rate till it hits like 70%, then it slows down until it finally hits 100% and then the charging cuts off. Download JuicePlotter and completely discharge and charge your phone to see this.
Hypothesis below:
The problem with the Evo is that once it hits that cut-off point, the phone never again seems to check if the battery is actually full. (LiCo chemistry has a slight tendency to settle a few hundredths of a volt after charging, and a few hundreths means a couple of %age points when you're in the 4.1V+ range) whereas most cheap chargers will actually keep checking the voltage and trickle charging if necessary.

Too much hassle to keep changing batteries in the Evo, would have to take my case off then the back cover is kinda a ***** and feels like its going to break a tab off or something. The immediate drop doesn't bother me too much. I just use my car charger and it tops me off usually.
Sent from my PC36100 using Tapatalk

Yes, you are right about switching at 70%. Didn't want to complicate things since we got some novices here clearly.
The hypothesis, not so much...as I said before its intentional and it does what it does to preserve the lifespan of the battery. If you paid $10 for a chinese battery, who cares about lifespan, just use an external charger.
Charge it when its off and it gets and stays at 100. Direct evidence that what they did was a feature and not a mistake.
Sent from an evo

I been using the 700 mah charger and I've haven't noticed any difference in performance. Also again I lost 9% carge in the 10 minutes I was surfing while eating breakfast. Oh well. Im not leaving my computer on all night sucking 400 watts or more to charge a 5 watt phone lol. Ill deal with the 10% drain.

Those are the critters under your bed, they use your phone while u r asleep.
Sent from my PC36100 using XDA App

mastermarc said:
The hypothesis, not so much...as I said before its intentional and it does what it does to preserve the lifespan of the battery. If you paid $10 for a chinese battery, who cares about lifespan, just use an external charger.
Charge it when its off and it gets and stays at 100. Direct evidence that what they did was a feature and not a mistake.
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Click to collapse
I build and design Lithium battery based systems for a living. There's absolutely no reason not to top off the battery. The recommended way to charge any Lithium cell is to constant-current charge and then constant-voltage charge up to 4.2V. Once you get to 4.2V, there's nothing wrong with charging it back up if it settles a little. In fact, most chargers don't even "terminate", they just hold 4.2V.
As for your assertion that it is not a bug, did you consider that perhaps the kernel designers are not realizing that there is some kind of parasitic drain on the battery once the kernel thinks it is full?

AzN1337c0d3r said:
I build and design Lithium battery based systems for a living. There's absolutely no reason not to top off the battery. The recommended way to charge any Lithium cell is to constant-current charge and then constant-voltage charge up to 4.2V. Once you get to 4.2V, there's nothing wrong with charging it back up if it settles a little. In fact, most chargers don't even "terminate", they just hold 4.2V.
As for your assertion that it is not a bug, did you consider that perhaps the kernel designers are not realizing that there is some kind of parasitic drain on the battery once the kernel thinks it is full?
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Click to collapse
Just out of curiosity what kinda systems do you build? I have a lithium powered moped (lifepo4 48v 40ah) but i wouldn't say i particularly designed or built (just assembled) the battery system, would be good to have some connections with some real battery specialists for later projects.
In any case, the parasitic drain is an interesting idea but its odd that I can go to sleep, and in the morning my unplugged evo hasn't changed even 1% battery life, whereas it drains from 100% to some odd 90+ number happens when its plugged in. So the parasitic drain would have to only happen when its plugged in for whatever reason.
Some interesting stuff from the wiki.
Charging procedure
Stage 1: Apply charging current limit until the voltage limit per cell is reached.[42]
Stage 2: Apply maximum voltage per cell limit until the current declines below 3% of rated charge current.[42][unreliable source?]
Stage 3: Periodically apply a top-off charge about once per 500 hours.[42][unreliable source?]
The charge time is about three to five hours, depending on the charger used. Generally, cell phone batteries can be charged at 1C and laptop-types at 0.8C, where C is the current that would discharge the battery in one hour. Charging is usually stopped when the current goes below 0.03C but it can be left indefinitely depending on desired charging time. Some fast chargers skip stage 2 and claim the battery is ready at 70% charge.[42][unreliable source?] Laptop battery chargers sometimes gamble, and try to charge up to 4.35 V then disconnects the battery. This helps to compensate for the battery's internal resistance and charges up to 100% in short time.
Top-off charging is recommended when voltage goes below 4.05 V/cell.[42][unreliable source?]
Lithium-ion[which?] cells are charged with 4.2 ± 0.05 V/cell, except for military long-life cells where 3.92 V is used for extending battery life. Most protection circuits cut off if either 4.3 V or 90 °C is reached. If the voltage drops below 2.50 V per cell, the battery protection circuit may also render it unchargeable with regular charging equipment. Most battery protection circuits stop at 2.7–3.0 V per cell.[42][unreliable source?]
For safety reasons it is recommended the battery be kept at the manufacturer's stated voltage and current ratings during both charge and discharge cycles.
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I'd have to check, but i am nearly certain this is exactly the kind of threshold charging system that you can use with lenovo's battery maximiser. As the wiki sorta explains, topping it off is fine...If you do it very infrequently (500hrs). Continuous charging from all i've ever learned on any chemistry just continues to corrode the plates until they become worse and worse at holding a charge.
No product manual anywhere will ever tell you to leave your charger plugged in for extended periods of time (save for 8hr battery conditioning on ni-cd, also of which it tells you not to do frequently). Storage instructions for lithium example say to leave the battery at about 70% charge. Extrapolating from that we can see that the lesser of the ideals is being completely empty, or too full.
Just my thoughts, much like everyone else i don't have any actual evidence that this was HTC's intention, just seems weird that they would screw something up that's been pretty much the same on the last 20 phones they made. My guess is they didn't.
Edit: oh, and the reason i bolded the military voltage is because that's another (very similar) idea as to what HTC might have done, which is lower the "full charge" threshold for as i suggested before....longer lifespan. But whether the phone ever actually gets to 100% is kinda irrelevant. My point is that its PROBABLY done intentionally to preserve the lifespan of the battery.

the best battery life and longevity

since owning my evo i have noticed rather peculiar battery life.
one day its ok, the next its gone 5-6 hours.
so i picked up a 3000mah battery for the wife and myself.
same thing. just horrible battey life one day, then the next.. great. i can go all day and charge when i go to bed.
yes i know the 3000mah battery is probably more like 2200-2500mah.
as i think back, and because of my job and some of the solar and battery backup systems we design for microwave radios i started to notice why, aside from heavy usage, i get poor battery life. and why under mid to heavy use i get even worse life.... i am talking 6 hours and i have just about drained a 3000mah battery.
its the HTC charger.....
no it isnt bad.. its charging the battery too quickly.
anyone who knows anything about batteries knows you can absolutely charge a battery too fast and that 9 out of 10 times a slow or trickle charge gives a much better charge on the battery thus giving prolonged use out of your phone.
not all batteries ar the same. some can handle a quick charge, others demand a slow charge.
so..i look back and i can say with total confidence that when i charge with the HTC wall charge my battery life is 1/2 or less what i get if i charge with the usb cable on a pc or with a wall charger that puts out less amps.
i also shut the phone off whenever i can to charge.
the htc charger puts out 5v 1a.
a usb port puts out 5v 500ma, (0.5a) and you can find wall adapters or car chargers that put out the same.
thus the usb port allows for a better cleaner charge.
prolonged use of the htc charger, i truly believe, will greatly shorten the life of your battery. and not just a little either.
so in the end...
1) usb a pc/laptop usb port to charge your phone whenever possible
2) only use the htc charge if you need a quick boost charge.
3) power off your phone if possible when ever using either method.
Sent from my PC36100 using XDA App

This is from a post i made earlier this morning.
i went 3 days 12 hours and 46 minutes on a single charge, that is with using the stock battery and a regular wall charger, yes i'm rooted and i used setcpu to set my frequency to 614 when screen on, and 245 when screen off, at night when i go to sleep i put the phone into airplane mode, and overall usage was cut back to light to moderate usage, i was trying to see how long i could actually go on the stock battery, and i must admit i'm very impressed.
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when i charge this way i leave the phone on, instead of turning it off.

I hadn't given this as much thought as you guys but in retrospect I have to say I've had the same experience. I just never thought the usb charge would be superior to 1a charging, I just thought it was other factors like my usage or signal strength.
Thanks for this thread

Just use Baked Snack if you want battery life, or juice defender/ultimate juice.

tomh1979 said:
This is from a post i made earlier this morning.
when i charge this way i leave the phone on, instead of turning it off.
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LOL, screen shots like that make me laugh.
I mean, its great and all that you are getting that, but dude...its a phone...use it!
Dont use it as a paperweight.

champ052005 said:
LOL, screen shots like that make me laugh.
I mean, its great and all that you are getting that, but dude...its a phone...use it!
Dont use it as a paperweight.
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Click to collapse
the point of it was to see how long it would go period (as in testing), so it was used, just not as much as i normally actually do, read that post again, i think i even said that didn't i not!
Next time please take some time to read the post and think through what it says before posting!

I have had similar issues. For example today my battery has dropped thirty percent in the last hour. I think it's because of poor signal though, atleast for me. I have had my battery die in three hours before because of no signal.
Sent from my PC36100 using XDA App

Signal strength does affect battery life, I have a 700 mah charger from my curve I'll start using that to see I notice any difference in drain. Ill report back in a few days if I remember to.

My time without signal is at around 25% today. My phone has been unplugged for 3.5 hours and is at 28%.
Sent from my PC36100 using XDA App

tomh1979 said:
This is from a post i made earlier this morning.
when i charge this way i leave the phone on, instead of turning it off.
Click to expand...
Click to collapse
Can you point me towards the round clock mod please

tomh1979 said:
This is from a post i made earlier this morning.
when i charge this way i leave the phone on, instead of turning it off.
Click to expand...
Click to collapse
Can you point me towards the round battery mod please

DirtyShroomz said:
Can you point me towards the round battery mod please
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Click to collapse
mine was apart of the Riptide clear theme, so it came with that, however though i have seen a thread in the app and theme section with this, you might want to search in there, i know it's in the first few pages since that is a popular mod.

I just got my wall charger in the mail and am dying to use it. I've read somewhere with the batteries that the EVO uses we shouldn't drain the battery all the way, is this true? If so, that means I can just pop the battery in the charger, yeah? It'd be a pain to have to drain my battery... Thanks for clarification anyone.

CollegeFresh said:
Just use Baked Snack if you want battery life, or juice defender/ultimate juice.
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Click to collapse
this isnt about roms and apps that claim to help battery life. and just to say it, i have yet to have a rom help my battery life.
in fact... my experience is that i get the best battery life on the stock odex roms. not sure why, but i have seen it many times.
i am talking the proper way to charge your phone, and using the wall charger should only be done when you need to give the phone a very quick charge.
i charged mine the other night when it was down to 2% and it took less than an hour and a half to charge the battery, where as using the usb method, would have taken easily twice as long, and provided twice the use.
I will also say that i have owned alot of phones, and this is THE worst battery life i have ever gotten from a phone... period.
HTC isnt known for using long lasting batteries, nor creating phones that are easy on a battery. HTC makes phones with batteries that blow their wad like a teenager getting his first BJ.

v_lestat said:
this isnt about roms and apps that claim to help battery life. and just to say it, i have yet to have a rom help my battery life.
in fact... my experience is that i get the best battery life on the stock odex roms. not sure why, but i have seen it many times.
i am talking the proper way to charge your phone, and using the wall charger should only be done when you need to give the phone a very quick charge.
i charged mine the other night when it was down to 2% and it took less than an hour and a half to charge the battery, where as using the usb method, would have taken easily twice as long, and provided twice the use.
I will also say that i have owned alot of phones, and this is THE worst battery life i have ever gotten from a phone... period.
HTC isnt known for using long lasting batteries, nor creating phones that are easy on a battery. HTC makes phones with batteries that blow their wad like a teenager getting his first BJ.
Click to expand...
Click to collapse
You do know that the Evo can not properly charge an extended battery right? The built in power driver only charges the stock battery correctly. You can check out either of the extended battery threads in the accessories forum for more info. Though charging via usb may give you a better charge, you are still getting cheated out of battery if you charge the battery in the phone.

Systemfraud said:
I just got my wall charger in the mail and am dying to use it. I've read somewhere with the batteries that the EVO uses we shouldn't drain the battery all the way, is this true? If so, that means I can just pop the battery in the charger, yeah? It'd be a pain to have to drain my battery... Thanks for clarification anyone.
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Click to collapse
thats a mixed bag man, there are mixed thoughts on this, personally i follow the mfg. initial instrucitons of 8-12 hours initial charge, regardless if it says the battery is full, then i will do 3-4 complete charges and discharges.
at that point you are good to go to charge anytime you like. alot of places will tell you to not let it go below 20% and thats ok, but be sure to charge it all the way.
The more times you take it off the charger before its full, the greater chance you have of hurting the battery.
all i know is that when i charge it with the wall charger the battery drains very fast. where as with a usb port on a computer... it seems to last alot longer.
what does the evo manual say about how to charge the battery? i personally have never looked.

v_lestat said:
this isnt about roms and apps that claim to help battery life. and just to say it, i have yet to have a rom help my battery life.
in fact... my experience is that i get the best battery life on the stock odex roms. not sure why, but i have seen it many times.
i am talking the proper way to charge your phone, and using the wall charger should only be done when you need to give the phone a very quick charge.
i charged mine the other night when it was down to 2% and it took less than an hour and a half to charge the battery, where as using the usb method, would have taken easily twice as long, and provided twice the use.
I will also say that i have owned alot of phones, and this is THE worst battery life i have ever gotten from a phone... period.
HTC isnt known for using long lasting batteries, nor creating phones that are easy on a battery. HTC makes phones with batteries that blow their wad like a teenager getting his first BJ.
Click to expand...
Click to collapse
Well, the point I was trying to make is that roms and apps are a big part of saving battery. If you want to have a longer lasting battery you should turn off radios when not using them and undervolt as well. Baked snack is an undervolted rom with a good kernel that helps save battery and ultimate juice/juice defender turn off radios for you and have various settings for helping you get a long battery life.
I get 50 hours easily with moderate usage and right now my phone has been on the same battery percentage for 8 hours while playing music for around 1 hour, receiving a couple of texts, 10 min of phone calls, checking internet for 10 min, and having around 1-2 signal bars.
It also helps a lot when you don't use the wall charger, it just plain sucks. When I used it my charge dropped anywhere from 100% to 87-92% in 10 minutes. But with a wall charger from ebay where you put the battery in it, it stays at 100% for a couple of hours so you get an extra 10% and it lasts a lot longer as well.

v_lestat said:
thats a mixed bag man, there are mixed thoughts on this, personally i follow the mfg. initial instrucitons of 8-12 hours initial charge, regardless if it says the battery is full, then i will do 3-4 complete charges and discharges.
at that point you are good to go to charge anytime you like. alot of places will tell you to not let it go below 20% and thats ok, but be sure to charge it all the way.
The more times you take it off the charger before its full, the greater chance you have of hurting the battery.
all i know is that when i charge it with the wall charger the battery drains very fast. where as with a usb port on a computer... it seems to last alot longer.
what does the evo manual say about how to charge the battery? i personally have never looked.
Click to expand...
Click to collapse
I don't mean the wall charger like.. the one HTC gives, I'm talking about the wall charger where you actually put the battery into it.
Sent from my PC36100 using XDA App

MSmith1 said:
You do know that the Evo can not properly charge an extended battery right? The built in power driver only charges the stock battery correctly. You can check out either of the extended battery threads in the accessories forum for more info. Though charging via usb may give you a better charge, you are still getting cheated out of battery if you charge the battery in the phone.
Click to expand...
Click to collapse
i will have to research this but the batteries are the same, only one has more cells.
the only thing the phone does is read the voltage of the battery.
and they are the same whether it is a 1 cell or 3 cell battery.
one just hold more charge.
but i could definitely see where the phone might jack with the charge.

I'm curious if one could split the difference between quick charging and complete charging by charging via the wall charger up to say 80 or 90% then switching to USB for the rest of the charge?

Full charged battery stick at 96%!!!

Hey,
I'm one of the proud nexus s users since a few days. I do have a question. I've got a stock nexus s with 2.3.3 unrooted. When I charge my battery, the phone won't charge more then 96%. I have treid to reboot and charge again, but no succes. Someone has te same or knows a sollution???
Sent from my Nexus S using Tapatalk

As mentioned many times before in this forum, batteries are not meant to be fully charged at all. This is to extend the lifespan of the battery. High voltage (100%) stresses out the battery, so by letting the charge stop at 96% for example, it makes it as full as possible without bringing its voltage to the max. So your battery can last longer and will not need a replacement so fast. Hope this helps.

It's not a problem, its a feature. Ironically, it keeps your battery life longer in the short run and long run.

soylukral said:
Hey,
I'm one of the proud nexus s users since a few days. I do have a question. I've got a stock nexus s with 2.3.3 unrooted. When I charge my battery, the phone won't charge more then 96%. I have treid to reboot and charge again, but no succes. Someone has te same or knows a sollution???
Sent from my Nexus S using Tapatalk
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Click to collapse
if you REALLY want your battery to reach 100% this is what you do. let the phone charge until it stops charging, unplug it from the charger, plug it back in, then continue charging it with the screen on. do not let the screen go off or it will stop charging. this method work, it just takes a lonooong time to reach 100%
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That method is called Bump charge. It's useful to bringing your battery to 100%
But do not do it often because it reduces your battery's lifespan.

I will give it a try. Thanks anyway.
Sent from my Nexus S using Tapatalk

navlem said:
As mentioned many times before in this forum, batteries are not meant to be fully charged at all. This is to extend the lifespan of the battery. High voltage (100%) stresses out the battery, so by letting the charge stop at 96% for example, it makes it as full as possible without bringing its voltage to the max. So your battery can last longer and will not need a replacement so fast. Hope this helps.
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Umm your explanation is why people would see the phone as fully charged at 100% then unplug to find it at a lower percentage. That was because the battery had been fully charged but then stopped charging and had not hit it's bump level. Now however the issue is that some phones seem to just stop charging. Not sure where you got the idea that its bad for them to be fully charged but just think about that statement for a second.
Its bad for them to be OVER CHARGED. Fully charged (4191mV) is great but charging past that point may lead to battery over heating and catching fire as was demonstrated with the trickle charge kernels over on the evo 4g forums. This issue, the one being discussed in the thread is NOT just something people should accept. This is a bug that should be reported to Google.
Sent from my MIUI Nexus S from the XDA Premium app.

kenvan19 said:
Umm your explanation is why people would see the phone as fully charged at 100% then unplug to find it at a lower percentage. That was because the battery had been fully charged but then stopped charging and had not hit it's bump level. Now however the issue is that some phones seem to just stop charging. Not sure where you got the idea that its bad for them to be fully charged but just think about that statement for a second.
Its bad for them to be OVER CHARGED. Fully charged (4191mV) is great but charging past that point may lead to battery over heating and catching fire as was demonstrated with the trickle charge kernels over on the evo 4g forums. This issue, the one being discussed in the thread is NOT just something people should accept. This is a bug that should be reported to Google.
Sent from my MIUI Nexus S from the XDA Premium app.
Click to expand...
Click to collapse
I read it through this page
http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
Though it might mention about the problem about "Showing 100% and instant drop after unplug from charger", but I reckon that Google is making Nexus S showing the true accurate charge.

navlem said:
I read it through this page
http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
Though it might mention about the problem about "Showing 100% and instant drop after unplug from charger", but I reckon that Google is making Nexus S showing the true accurate charge.
Click to expand...
Click to collapse
You reckon incorrectly.
This is why many new phones will “lose” up to 10% within a few minutes of coming off the charger. The reality is that the battery was only at 100% capacity for a brief moment, after which the battery management system allowed it to slowly dip down to around 90%. Leaving the phone plugged in overnight does not make a difference: the phone only uses the wall current to maintain a partial charge state.
Click to expand...
Click to collapse
I have battery graphs which show the phone is never reaching 100%, or was never reaching 100% (ironically, my phone actually was at 100% for the first time since 2.3.3 this morning). As I said, this is a bug not a feature. Phones should hit 100% then drop to a "bump level" (HTC seems to like 90% whereas I believe Samsung uses 95%) and then charge back up to 100%, as simms said, very slowly. It does this so as to not over-charge the battery because that can lead to severe over-heating issues and can possibly hinder the overall life of the battery. RogerPodacter was able to modify the battery drivers for the N1 so as to prevent this from happening (not quite sure what he modified) but because of the way that Samsung set up the NS battery drivers, this is not possible for us. Again, this is a BUG that should be reported to Google.

Yeah, i might reckon incorrectly. Doing the bump charge now, it seemed to be really slow at charging from 98% onwards though.

I had this issue with galaxy s also with newer firmwares. It is NOT a bug, it's a FEATURE.

JuWa said:
I had this issue with galaxy s also with newer firmwares. It is NOT a bug, it's a FEATURE.
Click to expand...
Click to collapse
LOL The battery not being able to achieve full charge is definitely a feature, ya sure. Absolutely. I can only use 95% of my cars petrol. That's a feature too. Definitely. My paycheck is only ever 95% of what I earned. Its a feature! People think about what you're saying >< a phone not being able to reach its maximum charge is a BUG.

kenvan19 said:
LOL The battery not being able to achieve full charge is definitely a feature, ya sure. Absolutely. I can only use 95% of my cars petrol. That's a feature too. Definitely. My paycheck is only ever 95% of what I earned. Its a feature! People think about what you're saying >< a phone not being able to reach its maximum charge is a BUG.
Click to expand...
Click to collapse
Ehm... Are you stupid or something? What is those things got to dot with the battery CHARGING???

The only real solution is to get a spare OEM battery or two and a wall charger to charge them in. The batteries last 2 to 4 more hours because when I plug one in its fully charged to 100%. Plus I rarely ever have to hook my phone up to a charger anymore. Swapping batteries is so much more convenient.
And I agree this 'feature' to save my $7 battery is not a feature at all. You can find extra batteries and chargers on ebay very easily.

I agree with the above post 100%. Since I got a second (genuine) battery and an external charger, both of my batteries charge to 100% and appear to last longer. Since I started charging them in the external charger, they also now charge to 100% in the phone too. As I said in the other thread similar to this, I'm presuming the battery needed a full cycle and the charging circuitry in the phone just wasn't up to the job.

JuWa said:
Ehm... Are you stupid or something? What is those things got to dot with the battery CHARGING???
Click to expand...
Click to collapse
Wow. Just wow. You don't even vaguely understand irony do you mate?

Oh, Americans... I just love you guys...

Living in America makes me American, does it?

kenvan19 said:
You reckon incorrectly.
I have battery graphs which show the phone is never reaching 100%, or was never reaching 100% (ironically, my phone actually was at 100% for the first time since 2.3.3 this morning). As I said, this is a bug not a feature. Phones should hit 100% then drop to a "bump level" (HTC seems to like 90% whereas I believe Samsung uses 95%) and then charge back up to 100%, as simms said, very slowly. It does this so as to not over-charge the battery because that can lead to severe over-heating issues and can possibly hinder the overall life of the battery. RogerPodacter was able to modify the battery drivers for the N1 so as to prevent this from happening (not quite sure what he modified) but because of the way that Samsung set up the NS battery drivers, this is not possible for us. Again, this is a BUG that should be reported to Google.
Click to expand...
Click to collapse
I've looked to make the same driver changes to the nexus s as I did to the nexus one, but the battery chip model and driver is different so the same changes don't make sense.
I've gone on record saying that this issue with the nexus s not charging to 100% is NOT intentional, its a bug inherent with type of driver used in the nexus s. I just don't own this phone to edit the driver and test.
But there is a line of code which I feel if it was removed, this issue may disappear. I know not everyone agrees. But my nexus one will stay at 100% for an hour and a half, every morning. And my nexus reaches 100% every single day, I've never seen otherwise. So its not the way batteries are supposed to work. If it was, they would just make the top end lower and the 96% mark would be the 100% mark. Just my opinion.

RogerPodacter said:
I've looked to make the same driver changes to the nexus s as I did to the nexus one, but the battery chip model and driver is different so the same changes don't make sense.
I've gone on record saying that this issue with the nexus s not charging to 100% is NOT intentional, its a bug inherent with type of driver used in the nexus s. I just don't own this phone to edit the driver and test.
But there is a line of code which I feel if it was removed, this issue may disappear. I know not everyone agrees. But my nexus one will stay at 100% for an hour and a half, every morning. And my nexus reaches 100% every single day, I've never seen otherwise. So its not the way batteries are supposed to work. If it was, they would just make the top end lower and the 96% mark would be the 100% mark. Just my opinion.
Click to expand...
Click to collapse
my nexus one always reaches 100%, using wildmonks kernels, ravens kernels, and now redstar kernel. if you would like me to try something on my nexus s, edit/delete files. ill gladly help out

Nexus 6P Not charging rapidly

Is anyone else not seeing charging rapidly with their stock charger?

No, I saw rates of 1500ma with a 2.4 amp car charger, usb a to c cable (screen showed rapidly charging). I also saw rates of 2400ma with the stock charger usb c to c cable (screen showed rapidly charging). I am guessing my battery was not drained enough to see higher charge rates.

I think your phone needs to be like 50% charge or less to really see the benefits of quick charge.

Scyntherei said:
I think your phone needs to be like 50% charge or less to really see the benefits of quick charge.
Click to expand...
Click to collapse
It was at 15% when I tried it. I have the stock charger and the Google 2 port 22.5w charger. I was plugged into the 2 port charger, but tried the stock charger for a minute. I may have had to leave it on the stock charger longer. Otherwise non "rapid" charging still took less than 2 hours from 15% to 100%.

donatom3 said:
Is anyone else not seeing charging rapidly with their stock charger?
Click to expand...
Click to collapse
No quick charge on the 6p.

luciferiusXI said:
No quick charge on the 6p.
Click to expand...
Click to collapse
I tried to edit my title I know it's not quick charge, but you can see youtube reviews where their phone shows "Charing Rapidly" on the lock screen and not just "charging". The phone can take up to 15W from the Type C port.

I tried the stock charger when the phone was at 60% and it varied between 1 and 2 amps. I'm going to run another test when the battery is lower. Sucks though because I typically try not to drain it that much.

Ok, I started charging with the stock 6p charger at 26%. I'm now at 74%. This charger does not ramp up in a linear fashion like other lithium-ion chargers that I'm familiar with. It's constantly ramping up and down over and over. The highest it's achieved was 2.8 amps for a few seconds and I would guess it may be averaging maybe 1 to 1.5 amps.
I'm wondering if it's even working to spec. Seems to me it ought to slowly ramp up to 3 amps, hold it, and then slowly ramp down at about 90%.
Anyone else monitored their charge rate?
Update: It took about 90 mins to go from 26% to 93%.

That sounds faulty. I can do that with a A->C setup in an hour. The google charger should be somewhat faster (40 minutes? Based on 2A vs 3A).

TonyHoyle said:
That sounds faulty. I can do that with a A->C setup in an hour. The google charger should be somewhat faster (40 minutes? Based on 2A vs 3A).
Click to expand...
Click to collapse
Have you tried the stock charger yet?

Not yet.. the battery on this thing is too darned good.. I'll try to remember tonight if it's low enough.

TonyHoyle said:
Not yet.. the battery on this thing is too darned good.. I'll try to remember tonight if it's low enough.
Click to expand...
Click to collapse
Load ampere from the play store and watch the charge rate. I wonder if it's just mine that has this very strange charge curve.

Glad I'm not going crazy. Coming from a Galaxy S6, I wasn't expecting the fast charge on this to be that slow.
From 46% to full on the stock fast charger supplied with the phone, it took an 1 hour 3 mins.
From 46% to full on my Anker IQ 71AN7105 which is supposed to output at 5V, 2.3 Amps, it took 1 hour 20 mins.
Both said the phone was "charging rapidly" when I plugged it in.
Just measured on the Anker, and it's showing charging rate at 640-790ma. So you're doing a lot better than I am! No wonder it's taking an age to charge!!!!
That's like normal non-fast charge surely.

I don't trust ampere to be honest.. charging current is supposed to vary but not the amount it's showing. I wonder if it's showing charging minus load, so having the screen on will make it give incorrect results, as will the various CPU sleep states, wifi, 3G, etc.
The real world test of time from x% to 100% or how many % in 30 minutes is somewhat better in that it's measuring the end result. I'll try to do that. (/me switches rob ross on twitch to drain some battery).

prophet42 said:
Glad I'm not going crazy. Coming from a Galaxy S6, I wasn't expecting the fast charge on this to be that slow.
From 46% to full on the stock fast charger supplied with the phone, it took an 1 hour 3 mins.
From 46% to full on my Anker IQ 71AN7105 which is supposed to output at 5V, 2.3 Amps, it took 1 hour 20 mins.
Both said the phone was "charging rapidly" when I plugged it in.
Just measured on the Anker, and it's showing charging rate at 640-790ma. So you're doing a lot better than I am! No wonder it's taking an age to charge!!!!
That's like normal non-fast charge surely.
Click to expand...
Click to collapse
A typical charging curve is shown below. The shapes of the curves might vary some by battery and circuit, but in general a battery will draw full current (up to some limit) for a period of time and then the current draw will steadily decline. This is normal. A battery will charge from 0%-30% much faster than from 70%-100%. Beyond allowing 3A to the battery, there appears to be no "fast charging" technique employed by the 6P.
The real key is what is the charger actually outputting? This should be tested by an instrument, not the phone. If, for example, the charger is outputting 2.9A and the phone is 10% charged and only drawing your 700mA there is probably an issue OR the power control is limiting current for some valid reason. Maybe the battery temperature.
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dwswager said:
A typical charging curve is shown below. The shapes of the curves might vary some by battery and circuit, but in general a battery will draw full current (up to some limit) for a period of time and then the current draw will steadily decline. This is normal. A battery will charge from 0%-30% much faster than from 70%-100%. Beyond allowing 3A to the battery, there appears to be no "fast charging" technique employed by the 6P.
The real key is what is the charger actually outputting? This should be tested by an instrument, not the phone. If, for example, the charger is outputting 2.9A and the phone is 10% charged and only drawing your 700mA there is probably an issue OR the power control is limiting current for some valid reason. Maybe the battery temperature.
Click to expand...
Click to collapse
I was expecting a curve like this but it was a roller coaster starting at 26%. I expect the charger is putting out because I measured a momentary blip of 2.8 amps.
As was mentioned, Ampere may be part of the problem but I don't have other tools other than a simple time to full calculation. Do we even have specs as to what's that supposed to be?

OK here are the results I got:
Both started at 10%, with identical settings (although on different days, can't help that). Normal working settings.. I avoided having the display on except for checks and it was sat still so allowed to doze.
Code:
30 Mins 60 Mins 75 Mins Total Time
USB A 47% 81% 92% 93 mins
USB C 50% 85% 95% 82 mins
And expressed as % per minute
Code:
30 Mins 60 Mins 75 Mins To full
USB A 1.23 1.13 0.73 0.40
USB C 1.35 1.16 0.66 0.71
So, C (well, google's charger and cable) is around 15% faster for me* than A.
Around 90% charging visibly slows to a crawl on both methods. The first 80% or so are fast, but interestingly C gains most at the end as it doesn't slow down as much.
Edit: If you ignore the timings at the bottom, it looks very similar to the example graph posted. Which is expected I guess.
* YMMV, standard disclaimers, etc.

one thing to note is that the phone will also charge slower if your screen is on and generating additional heat. The phone will throttle the charging rate based on the temperature of the battery.

So while it's 15% faster, the battery capacity is more than 25% larger. So how is the real gain achieved?

I'm thinking that the google charger isn't sending 3A anyway.. You'd expect more difference even if my normal charger is going as high as 2.4A (and I'm not sure it goes that high without QC). USB C might be capable of it but this phone/charger combination isn't.

Is fast charging working ?

Hi.. I use the stock charger however even though the notification says it is fast charging .. I dont see it charging fast.. From 26% to 33% it took almost 25mins

You might wanna check on your charger and also use apps like Ampeare or AccuBattery to test the amount of current your phone is receiving.
Sent from my A0001

Ampere won't work.
The V20 will not do quick charge when the screen is on. Quick charge only works when the screen is off.

I was having this issue too, and it appears Facebook was having some kind of problem where the process was using a lot of CPU in the background while the phone was locked. After I killed the process, fast charging worked again (even after FB was restarted). So look for that or any other apps that might be having issues. Given that fast charging was not working for days until I tried this and started working again immediately afterwards, it's unlikely this was a coincidence and something else was the issue (though not impossible).

Quick charge doesn't work when screen is on means you're having too much apps running when the screen is on. trying using greenify.. works for me

I had similar problems a few days ago. There was a terrible bug in Facebook and Facebook messenger where the battery consumption was extremely high. Even with quick charge, the apps were draining the battery faster than its charging.
When I completely shut off the phone, it charges very quickly. So, try that first. Power down and do a quick charge. If it charges quick, then try reinstalling or updating your Facebook and messenger apps.

You will know if quick charge is working because the battery icon in the top right of the screen has a circle around it.
Sent from my LG-H990 using Tapatalk

Wooba99 said:
You will know if quick charge is working because the battery icon in the top right of the screen has a circle around it.
Click to expand...
Click to collapse
I dont get any circle icon for battery can you share a screenshot please

My apologies, just the electrical bolt gets the circle.
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Wooba99 said:
You will know if quick charge is working because the battery icon in the top right of the screen has a circle around it.
Click to expand...
Click to collapse
The problem is that even though it is "fast-charging" it actually charges very slowly. I have the notification saying it is fast-charging and the circle inside the battery but the battery percentage increases extremely slowly.
I had the HTC bolt with quick charge 2.0 and it charged so much faster than the V20.

Wooba99 said:
My apologies, just the electrical bolt gets the circle.
Sent from my LG-H990 using Tapatalk
Click to expand...
Click to collapse
That is fast charge dude.
jamebarron88 said:
The problem is that even though it is "fast-charging" it actually charges very slowly. I have the notification saying it is fast-charging and the circle inside the battery but the battery percentage increases extremely slowly.
I had the HTC bolt with quick charge 2.0 and it charged so much faster than the V20.
Click to expand...
Click to collapse
There are a few factors.
If your screen is on, or if you are using the phone while charging, it will not quick charge. Quick charge only happens when the screen is off. It will charge faster if your phone is powered off.
Also, if the battery rise to a certain temperature, it will stop quick charge too. Similarly, once the battery reach about 80% charge, charging is also slower.

Switch to your lock screen it should say fast charging and when it comes to LG phones the cable matters more than the charger used.
Sent from my VS985 4G using XDA-Developers Legacy app

BozQ said:
That is fast charge dude.
There are a few factors.
If your screen is on, or if you are using the phone while charging, it will not quick charge. Quick charge only happens when the screen is off. It will charge faster if your phone is powered off.
Also, if the battery rise to a certain temperature, it will stop quick charge too. Similarly, once the battery reach about 80% charge, charging is also slower.
Click to expand...
Click to collapse
None of these "factors" hindered the HTC Bolt from charging much much more quickly than this phone, and it uses an older version of quick charge.
I'm familiar with how quickly the phone charges when powered down.
---------- Post added at 02:34 AM ---------- Previous post was at 02:32 AM ----------
LBJM said:
Switch to your lock screen it should say fast charging and when it comes to LG phones the cable matters more than the charger used.
Click to expand...
Click to collapse
It already says it is quick charging! The issue is that the charge rate, even when "quick-charging" is slow as molasses. And the original post clearly stated the stock charger is being used
Do people even read the OP?

jamebarron88 said:
It already says it is quick charging! The issue is that the charge rate, even when "quick-charging" is slow as molasses. And the original post clearly stated the stock charger is being used
Do people even read the OP?
Click to expand...
Click to collapse
In that OP post he doesn't state if he tried a different charger as my post implies, do you even use your critical thinking skills much?
I've had stock LG chargers fail to maintain the fast charging speed even though it stated "fast charging" or in old devices it states charging then switches to "slow charging." The devices I was able to replicate were the LG G Pad 8.3, LG G3, & LG V10. The irony was the Samsung chargers worked best with the LG devices.
Sent from my VS985 4G using XDA-Developers Legacy app

Slightly off topic, but I just wanted to mention how impressed I am with charging speeds when using a PC (perhaps other USB ports?). All my chargers are hard wired Micro USB except for my V20 charger and my Note 7 charger. They both quick charge which I don't like to do so I've been using my PC USB port to charge. It's been getting almost a percent a minute which to me is mind blowing. I'm sure it's slow compared to the regular charger but it's way faster than I've ever seen from a computer USB port before.

jamebarron88 said:
None of these "factors" hindered the HTC Bolt from charging much much more quickly than this phone, and it uses an older version of quick charge.
I'm familiar with how quickly the phone charges when powered down.
---------- Post added at 02:34 AM ---------- Previous post was at 02:32 AM ----------
It already says it is quick charging! The issue is that the charge rate, even when "quick-charging" is slow as molasses. And the original post clearly stated the stock charger is being used
Do people even read the OP?
Click to expand...
Click to collapse
Try disabling Facebook and Facebook messenger and charge again. Or if you know which app is misbehaving, then try disabling that too.

I hope people realize that the stock LG charger can barely be considered a fast charger. It uses the QC1.0 standard while the phone is capable of QC 3.0. LG has never included a proper charger in any of their Quick Charge capable devices.

Found this in lg help..