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[Q] Nexus S battery puzzling my head

ok most of us here considered that nexus S' battery is poor compared to others, am i right?
i have lots of questions that want to clarify, these are only simple questions
1. is it ok to charge overnight the phone, despite that it dosn't reach 100%? i woke up in the morning, it's 96% percent and the status is still "charging" will it be overcharged?
2. is it ok to charge the phone when it's not yet low battery like only 50% or 80%?
3. are there any different effect of charging between pc and ac power supply except the charging speed?
4. is there a bad effect of using the phone while charging like playing games? will it lessen the battery life faster?
5. lastly, i know that as battery gets older its life also lessen because of it's internal resistance increases and it can not be stopped. my question is, is there a way to slow down this process?

I got the same issue,
got my nexus S 4 days ago and I've done two charges already, both times overnight and at morning the phone says "charged" but it is stopped at 95-96% and both the charger and the phone are completely cold so as it seems the charging is indeed finished.
Is this normal?
I've changed a lot of phones over the years but it's the first time to see something like that...

zhane0513 said:
ok most of us here considered that nexus S' battery is poor compared to others, am i right?
i have lots of questions that want to clarify, these are only simple questions
1. is it ok to charge overnight the phone, despite that it dosn't reach 100%? i woke up in the morning, it's 96% percent and the status is still "charging" will it be overcharged?
2. is it ok to charge the phone when it's not yet low battery like only 50% or 80%?
3. are there any different effect of charging between pc and ac power supply except the charging speed?
4. is there a bad effect of using the phone while charging like playing games? will it lessen the battery life faster?
5. lastly, i know that as battery gets older its life also lessen because of it's internal resistance increases and it can not be stopped. my question is, is there a way to slow down this process?
Click to expand...
Click to collapse
1. Nexus never lets the phone charge fully to 100 pct to protect damage from overcharging.
2. Yes. It is ok.
3. Speed is only difference I know.
4. It can cause temp to get high. Just be observant. If phone gets HOT, turn off the game for a bit.
5. I think it helps if you keep the battery fuller. Charge when you can and don't always let it go to 0. But I think the difference will be minimal. Anyway you should not see aging effects for something like 2 years.
Sent from my Nexus S using XDA App

bad_freddy said:
I got the same issue,
got my nexus S 4 days ago and I've done two charges already, both times overnight and at morning the phone says "charged" but it is stopped at 95-96% and both the charger and the phone are completely cold so as it seems the charging is indeed finished.
Is this normal?
I've changed a lot of phones over the years but it's the first time to see something like that...
Click to expand...
Click to collapse
Different phones handle it in different ways. For example HTC devices charge to 100 pct then stop and allows battery to drain (even while still on charger) to 90 pct before charging kicks back on again. Samsung, phone just stops before 100 pct and alternates charging / not charging. The problem is li-ion battery can be damaged by overcharging.
Sent from my Nexus S using XDA App

thanks! for the fast answers!
so it would be best to charge as much as possible even if it is not low battery yet and not allowing to totally deplete the battery,
tnx a lot mate!

[Q] Does not recognize battery

Hello everybody!
I have a tranformer tf101 with + / - 6 months of use. After being stopped a few weeks (drained battery) it no longer charge and the system does not recognize the battery. When I plug the charger he starts the boot and not charge the battery. In settings with the battery status is "unknown" and a question mark on top.
I've given a factory reset and nothing. Has also has opened the tablet and unplugged and plugged the battery again. I did a test trying to turn on the device without battery and it turned on like before, like when connected (interrogation and status unknown).
The charger is apparently working, coz is charging dock.
I can not send to warranty because I live in Brazil...
Can anyone give me a light? Have researched a lot and found nothing ...
Thank you all!

Try plugging it into a USB port on your PC and leave it plugged in overnight, turned off.

Goatshocker said:
Try plugging it into a USB port on your PC and leave it plugged in overnight, turned off.
Click to expand...
Click to collapse
thanks for the reply! I've done it, one entire day on energy and other day directly to the USB... But nothing!

Well... It might be possible that the battery is busted from being discharged for so long.
Although... Does it work on battery or does it instantly die when you unplug it?

When I disconnect die instantly! But if is on dock, he stay on

Yeah sounds like the battery is busted then. It works from the dock because the dock acts as a charger for the tablet, just like the 'real' charger.

Strange how a battery with six months of use given problem.
Would if I try to put a higher charge on it (20v) and force her to reactivate might work?

Batteries only last so long, and yours sounds like it is shot.
It's very strange that yours went bad after such a short amount of time.
If the charger charges the dock but not the Transformer, then it's not the charger.
You could possibly buy a replacement battery and perform the surgery yourself.
Other than that, RMAing is the only thing that can be done.
Sent from my Transformer TF101 using Tapatalk 2

Software should not be the problem, right?
I'll try to overload the battery to see if she resurrects.
Then post the result!
thanks all for now!

mtpoth said:
Strange how a battery with six months of use given problem.
Would if I try to put a higher charge on it (20v) and force her to reactivate might work?
Click to expand...
Click to collapse
It not that strange. Its not the age per se thats the issue here - its that it was discharged for so long. Once a battery reaches a certain level, it simply wont charge anymore.
Applying 20v will just blow the fuse in the TF, or worse - fry the whole thing... Dont do that
I read somewhere the fuse blows at 17v or something.
And even if we ignore the tablet for a second, applying higher voltage to the battery will just kill the few cells still alive.
And, in worst case, it can even cause the battery to explode, possibly starting a fire and/or damage a person. Although thats not likely with such a low over-volting as 20v. Im just trying to tell you not to put more voltage on a batter than its designed to get
The only way to 'possibly' repair a dead battery is to trickle-charge it, meaning applying a low voltage over a period of time.

Hello Goatshocker!
This charge 20V must be made directly to the battery and not in TF, it really would kill him! And it would be just a "scare" the battery in about 2 seconds only, the rest of the charge would be normally done after (15v). I've done this with cell phone battery several times!
As the battery is dead it seems, think it's the only option.
But before doing so I'll take you on an assistance to make sure it is the battery.

mtpoth said:
And it would be just a "scare" the battery in about 2 seconds only, the rest of the charge would be normally done after (15v). I've done this with cell phone battery several times!
Click to expand...
Click to collapse
Ah yes, you are quite correct about that. I completely forgot about that method.
Yes, that might indeed work. But I would only do that as a last-resort, although you seem to be quite out of other alternatives

I took him in an assistance yesterday. Tomorrow should tell me the problem. Depending on the result already do the "scare" on battery.
then put the result here!

I had a similar problem. I tried connecting it to different sockets and it finaly charged.
Sent from my U20i using XDA

k.janku1 said:
I had a similar problem. I tried connecting it to different sockets and it finaly charged.
Sent from my U20i using XDA
Click to expand...
Click to collapse
whath kind of sockets you used?

Unfortunately, the overcharging did not work! The battery was completely dead, not sure how this is possible! But it's a valuable tip! The battery dock is the same tablet. So I changed them and I was working with the tablet and dock only works on energy.
Can anyone advise me a reliable site to purchase this battery? The model is ASUS C21-EP101
ty all!

[Bug] Charging phone while using results in shutdown with red led

Not sure if this is related to 4.4 or the nexus 5 specifically (pretty sure its the hardware). While using the phone during charging it doesn't charge fast enough to keep powered on. My wife was on facebook when hers went down, and I was playing knights of pen and paper when mine went down. The phone will eventually just power off and flash the red led 8 times. The only way to power it back on is to load the bootloader first (vol up + vol down + power) then press the power on start. I tested this on 2 black 32GB Nexus 5s with android 4.4.
This is really easy to test, next time your device is low keep using it after plugging it in. It will eventually just "go dark" and you'll be greeted by the flashing red led.
Here is a link to the google group product forum thread I created, please post feedback. This needs to get fixed, hopefully just an update can resolve it.
https://productforums.google.com/forum/#!category-topic/nexus/other-discussions/nexus-5/EzWUOv6zs5c

nagle3092 said:
Not sure if this is related to 4.4 or the nexus 5 specifically (pretty sure its the hardware). While using the phone during charging it doesn't charge fast enough to keep powered on. My wife was on facebook when hers went down, and I was playing knights of pen and paper when mine went down. The phone will eventually just power off and flash the red led 8 times. The only way to power it back on is to load the bootloader first (vol up + vol down + power) then press the power on start. I tested this on 2 black 32GB Nexus 5s with android 4.4.
This is really easy to test, next time your device is low keep using it after plugging it in. It will eventually just "go dark" and you'll be greeted by the flashing red led.l
Here is a link to the google group product forum thread I created, please post feedback. This needs to get fixed, hopefully just an update can resolve it.
https://productforums.google.com/forum/#!category-topic/nexus/other-discussions/nexus-5/EzWUOv6zs5c
Click to expand...
Click to collapse
Yikes. This isn't good. The only time the phone may not be able to keep up with charge is when using GPS. If this is a widespread issue I'm sure it will be fixed. Unless you have a bad battery or charger! I will test..
Update:
Just played game Aurolux whilst charging for 10 minutes and phone gained 5%.
Sounds like you got two lemons

Globespy said:
Yikes. This isn't good. The only time the phone may not be able to keep up with charge is when using GPS. If this is a widespread issue I'm sure it will be fixed. Unless you have a bad battery or charger!
Click to expand...
Click to collapse
I tested it on both mine and my wifes phones, different chargers as well. Also the load on the devices was low, both were on wifi, she was using the facebook app, I was playing knights of pen and paper, both on auto brightness (in our living room, lights off). Same thing happened on both, screen just cuts out, red light starts flashing.
Hopefully it gets fixed, if more people will test it and post feedback here or at googles forum it would be great.

I've used the phone for hours while plugged into mains power and haven't had any issues ?
Sent from my Nexus 5 using xda app-developers app

n7of9 said:
I've used the phone for hours while plugged into mains power and haven't had any issues ?
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
Same here. Zero issues playing games and phone charges.
Are you using a custom ROM or kernel? That could explain it. Otherwise you either have two did chargers, or 2 did batteries, or a combination of both.
Sorry.....

Globespy said:
Just played game Aurolux whilst charging for 10 minutes and phone gained 5%.
Sounds like you got two lemons
Click to expand...
Click to collapse
How low was the charge on the phone? Both of ours were under 10% when we plugged them in and kept on them. Both phones are completely stock.

nagle3092 said:
How low was the charge on the phone? Both of ours were under 10% when we plugged them in and kept on them.
Click to expand...
Click to collapse
28%
I guess I could try to charge when it's below 10%, but maybe easier is if you try charging whilst using your phone above say 20%. If you still have the issue then I think it's device related, if not report back.

Globespy said:
28%
I guess I could try to charge when it's below 10%, but maybe easier is if you try charging whilst using your phone above say 20%. If you still have the issue then I think it's device related, if not report back.
Click to expand...
Click to collapse
I'm gonna give that a shot tomorrow. Its getting late and need to get up for work in a couple hours. Thanks for testing, makes me wonder though if it is my phones, or if its and issue with a low battery and charging/using.....maybe something related to the reason why you cant do an update until your battery is at 20% despite being connected to a charger.

nagle3092 said:
How low was the charge on the phone? Both of ours were under 10% when we plugged them in and kept on them. Both phones are completely stock.
Click to expand...
Click to collapse
you have faulty devices or chargers. my N5 charges super fast. over 1% per minute(until 80%) while it is on and being used
mine died this morning when i woke up. plugged it in and watched a few youtube videos while i woke up and let it charge

Enddo said:
you have faulty device or chargers. my N5 charges super fast. over 1% per minute(until 80%) while it is on and being used
mine died this morning when i woke up. plugged it in and watched a few youtube videos while i woke up and let it charge
Click to expand...
Click to collapse
They seem to charge just fine when left alone. It just seems too coincidental that both phones would have the exact same power issue.

Enddo said:
you have faulty devices or chargers. my N5 charges super fast. over 1% per minute(until 80%) while it is on and being used
mine died this morning when i woke up. plugged it in and watched a few youtube videos while i woke up and let it charge
Click to expand...
Click to collapse
I agree... Since first replying to this thread I've gained 29% more battery and have been using phone constant. It charges really fast.

nagle3092 said:
They seem to charge just fine when left alone. It just seems too coincidental that both phones would have the exact same power issue.
Click to expand...
Click to collapse
dont forget, the snapdragon has 'quick charge 2.0', you shouldn't be seeing that kind of charging issues. i mean, if it's something you're ok living with. but that sounds like a big indicator that the battery or charging module is faulty/will go bad soon

Enddo said:
dont forget, the snapdragon has 'quick charge 2.0', you shouldn't be seeing that kind of charging issues. i mean, if it's something you're ok living with. but that sounds like a big indicator that the battery or charging module is faulty/will go bad soon
Click to expand...
Click to collapse
No I'm already getting mine replaced for dead pixels but to have 2 phones experience the same issue like this is weird. Need more people to test the phones under 10%, I know they charge fast but there could be a reason why behind this like I listed above.

The only thing I notice is the charger does get quite warm when charging, but it's very fast.
It does sound too coincidental, but not impossible.
I hope it works out for you.

nagle3092 said:
No I'm already getting mine replaced for dead pixels but to have 2 phones experience the same issue like this is weird. Need more people to test the phones under 10%, I know they charge fast but there could be a reason why behind this like I listed above.
Click to expand...
Click to collapse
could it possibly be the cable, or the charger unit, or even the wall socket? these are all things that should be tested

I just wanted to say that I had the same issue as you and the problem so far seems to happen when you let the battery get pretty low before plugging it in.
The battery was down to about 8% when I plugged the phone in last night (to the lg charger). I actually left mine alone for about 30 minutes and when I came back, it was at 6%. I did verify that the display said "Charging" when the cable was plugged in. I unplugged the phone, and plugged it back in and started browsing the web on wifi and within another 15 minutes the battery had gone down to 2%. I turned off the screen and left it alone and when I checked it again, it was at 1%. At that point, I was worried about the phone, so I urned off the phone completely. When I turned it back on, it did look like it was charging again, but very slowly. At this point, I tried plugging it into another charger that I had, and it charged up fairly quickly.
Definitely pretty frustrating as I've never had something like this happen unless you have the usb cable plugged into a computer.

Last night I went to plug my phone into the lg charger...I could hear the charger buzzing slightly....I plugged in the phone and thought nothing of it really... Looked at my phone on the way to work and it wasn't charged past 28%.... plugged it into another charger at my desk and its at 47% in a matter of minutes...
I know op said he tried different chargers, but just tossing in my lousy 2c

apristel said:
Last night I went to plug my phone into the lg charger...I could hear the charger buzzing slightly....I plugged in the phone and thought nothing of it really... Looked at my phone on the way to work and it wasn't charged past 28%.... plugged it into another charger at my desk and its at 47% in a matter of minutes...
I know op said he tried different chargers, but just tossing in my lousy 2c
Click to expand...
Click to collapse
The only chargers I tried were the ones that came with the phones. I got a bunch of others so Im going to give them a shot as well and see how this fairs.

Ok so Im sitting here trying to recreate the issue and it is different. I brought the battery down to 4% plugged it in and kept playing kop&p and the battery hasnt gone down, it actually went up to 7% but its holding there. I am letting it get to 10% now before I pick it up and try again. I swapped out between the n5 charger and my n4 charger both held it at 7% while playing.
Maybe this just has to do with battery conditioning, or maybe the snapdragon quickcharge ic.
Just checked the phone, from the time I started writing this till now (maybe 2 minutes) its up to 10% so back at it I go.

The charger that comes with the phone is horrible. Its the same type as the n4 which dies after 2 months. Don't use it, just use another one and you'll be just fine.
Sent from my Nexus 5 using Tapatalk

Battery life on latest 4.70 firmware f3111

How's your sot on this latest firmware guys and did you notice any improvements from 3.81 firm version? I'm on 3.81 and I'm disapointed about the battery life. It's too short...
Sent from the center of the galaxy

And it does not load you anymore? Phone? From 90% to 100% over half an hour?

SALL666PL said:
And it does not load you anymore? Phone? From 90% to 100% over half an hour?
Click to expand...
Click to collapse
Sorry, I don't understand what you mean...
Sent from the center of the galaxy

Does 90% to 100% battery charge for a long time? About an hour you are loading these 10%

SALL666PL said:
Does 90% to 100% battery charge for a long time? About an hour you are loading these 10%
Click to expand...
Click to collapse
I really don't know what you're saying. Sot means screen on time. On the 3.81 firmware I'm getting about 4h sot, just browsing, youtube mainly on wifi, a little bit of data traffic. 4h, no games with screen brightness at minimum is just pathetic... Bad deal with this phone...
Sent from the center of the galaxy

cojocar.andrei said:
I really don't know what you're saying. Sot means screen on time. On the 3.81 firmware I'm getting about 4h sot, just browsing, youtube mainly on wifi, a little bit of data traffic. 4h, no games with screen brightness at minimum is just pathetic... Bad deal with this phone...
Sent from the center of the galaxy
Click to expand...
Click to collapse
He's probably saying that his phone takes too long to charge from 90% to 100%. With that said though, I have yet to update to the latest version.

tiktakt0w said:
He's probably saying that his phone takes too long to charge from 90% to 100%. With that said though, I have yet to updated to the latest version.
Click to expand...
Click to collapse
exactly

SALL666PL said:
exactly
Click to expand...
Click to collapse
Even without updating to the latest version, I sometimes experience that phenomenon. Heck, my phone sometimes blatantly stops charging for no reason at all and I would have to turn off the phone to be able to charge it.

No problems for me thus far, but the battery is extremly week. I wonder if undervolting the cpu would increse a little bit the life per charge cycle... Anyway, I regret buying this phone, but it's my fault entirely that I did...
Sent from the center of the galaxy

tiktakt0w said:
Even without updating to the latest version, I sometimes experience that phenomenon. Heck, my phone sometimes blatantly stops charging for no reason at all and I would have to turn off the phone to be able to charge it.
Click to expand...
Click to collapse
Today I experienced the same unfortunately ... I plug the charger and nothing the diode is not lit and there is no sound that loads, under the computer immediately detects and charges ... I have to turn off and turn on the phone to start charging, strange is enough

SALL666PL said:
Today I experienced the same unfortunately ... I plug the charger and nothing the diode is not lit and there is no sound that loads, under the computer immediately detects and charges ... I have to turn off and turn on the phone to start charging, strange is enough
Click to expand...
Click to collapse
Probably you have a bad cable, charger or even the inside charge circuitry could be bad...
Sent from the center of the galaxy

SALL666PL said:
Today I experienced the same unfortunately ... I plug the charger and nothing the diode is not lit and there is no sound that loads, under the computer immediately detects and charges ... I have to turn off and turn on the phone to start charging, strange is enough
Click to expand...
Click to collapse
Unfortunately, my problem escalated quickly. The phone isn't charging anymore and I've tried different cables and chargers. It seems like my xa has a hardware problem, thankfully though I haven't rooted and unlocked the bootloader of this thing. Gomna have to send it back for warranty.

cojocar.andrei said:
Probably you have a bad cable, charger or even the inside charge circuitry could be bad...
Sent from the center of the galaxy
Click to expand...
Click to collapse
Charger and original cable

SALL666PL said:
Does 90% to 100% battery charge for a long time? About an hour you are loading these 10%
Click to expand...
Click to collapse
I think it is because QNOVO ADAPTIVE charging
That adapts your charging behaviour
Like many of us leaves the phone to charging over full night that damages the battery
So sony added a featutre qnovo adaptive charging that adapts charging behaviour and if someone is one of those people who left there mobile to plug in full night
It will automatically decreases charging speed from 90 to 100 %

Samsung Gear S3 Frontier dead

Hi all.
I've had my gear for about 2 years now.
One day, about a month ago I forgot to put it in the charger and the battery drained totally. After this small incident I can't get the watch to start anymore.
I'ts completely dead, does not respond when I try pressing/holding buttons, charging it or whatever. The charger starts blinking red after a short while.
I also tried to solder a USB cable to the connections on the motherboard but no reaction with that either..
I've tried to replace the battery the other day and success, it started!! But, only for an hour or so, now it's dead again, exactly like before.
The battery that sits in the watch right now is almost fully charged and measures 3.7 volts directly on the contact surfaces.
Anyone got an idea what to try next?
Note that it's completely dead and does NOT respond to any pressing of the buttons or charging it in any way.
Regards
Emil

If correct soldered wires...
Then charging via USB possible...
Try maybe for 30 minutes to charge via USB...
Check if device will be hot
Maybe Hardware damage...
You could check Service Manuals... Schematics:
https://forum.xda-developers.com/showpost.php?p=71759486&postcount=30
Best Regards

RenllejF said:
The battery that sits in the watch right now is almost fully charged and measures 3.7 volts directly on the contact surfaces.
Click to expand...
Click to collapse
Lithium battery fully charged are at "4.20V". "3.7V" is the nominal voltage (mean stay at 3.7V 80% of the time during discharge time).

Samsung Gear S3 Battery Issue Fix
Samsung S3 Frontier Learning Mode found for charging issue SM-R760. The solution (keep in the charger while doing resets) is to reset the watch 8 to 10 times and keep holding the power button and shutting it off about another 10 times. This is unusual however my battery went from 1%, 4%, 16% and the flashing red light stopped and went to 100% charge in 2 1/2 hrs. I will keep the forum informed any changes if this reoccurs. I definitely think the latest update blew-up the cache in watch and somehow takes multiple resets and power button presses to reset the functionality of Samsungs mistakes.
RenllejF said:
Hi all.
I've had my gear for about 2 years now.
One day, about a month ago I forgot to put it in the charger and the battery drained totally. After this small incident I can't get the watch to start anymore.
I'ts completely dead, does not respond when I try pressing/holding buttons, charging it or whatever. The charger starts blinking red after a short while.
I also tried to solder a USB cable to the connections on the motherboard but no reaction with that either..
I've tried to replace the battery the other day and success, it started!! But, only for an hour or so, now it's dead again, exactly like before.
The battery that sits in the watch right now is almost fully charged and measures 3.7 volts directly on the contact surfaces.
Anyone got an idea what to try next?
Note that it's completely dead and does NOT respond to any pressing of the buttons or charging it in any way.
Regards
Emil
Click to expand...
Click to collapse

change battery 100% but not working power on/off
I changed the battery because it was no longer charging. Recharged and gave 100% charge but now the power button does not turn on. He charges but does not care. Any suggestion?
Thank you.

tbagetti said:
I changed the battery because it was no longer charging. Recharged and gave 100% charge but now the power button does not turn on. He charges but does not care. Any suggestion?
Thank you.
Click to expand...
Click to collapse
Some wire broken when changing the batt....

tbagetti said:
I changed the battery because it was no longer charging. Recharged and gave 100% charge but now the power button does not turn on. He charges but does not care. Any suggestion?
Thank you.
Click to expand...
Click to collapse
Were you able to resolve this issue? Looks like I did the same as well.

I got the same problem. :crying:
It is supposed to have 100% battery but in about two minutes it drops to 90% and turns off.