Battery acting weird - Nexus 4 Q&A, Help & Troubleshooting

Battery actine weird
When I go to sleep I put my N4 on AC charging, when I wake up my phone is on 100%, and here starts the issue.
Then I start using my phone, and it goes from 100% to 99%, and after some time again to 100%, and few more times like that and then it goes to 99%, 98% and normally starts to drain.
Does anyone experienced this issue, bug?

Don't worry about it. It's a known bug since the dawn of time. Let's hope Google fixes this in the next update.
Sent from my Nexus 4 using Tapatalk 2

Oh, okay. I don't want to deal with rma and stuff, hope google will fix it

mamutarka said:
Oh, okay. I don't want to deal with rma and stuff, hope google will fix it
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There will be no fix!
It is no bug, it is just for security to prevent the battery from overcharging.
It goes to 99% then up to 100% and down to 99%....
It is just a number, you know?
-Gesendet von meinem Nexus 4 PAC 4.2.2 + Faux Kernel-

I believe the OP may be referring to this behaviour which is also "Nexus 4 normal".

Related

Battery Won't Idle

It seems like my battery won't idle after it drops under 100%. I can leave it off the charger at 100% and it won't drop. But after that it'll drop 2-3% every 2-3 hours I don't touch it. What gives? Looking at the graph there is no wake locks period. It just slants it never flat lines it seems like. WiFi is not on and it deep sleeps. But the battery drops over nothing.
Left it over night at 71% and it dropped to 68%.
Sent from my Galaxy Nexus
Wow.. bump
Sent from my Galaxy Nexus
Mine does this too, I have noticed it since the start with every kernel/ROM
I can leave it for ages or even use it for a while, and it stays at 100% but below 100% it doesn't do this
However I have noticed that this occurs more on some kernels than others. eg. Bricked which I am using now, does not last as long on 100% and goes down normally from there.
I have read people thinking their battery life is amazing at 100% but honestly I think its a bug or something in the reading
Please correct me if I'm wrong
markj338 said:
Mine does this too, I have noticed it since the start with every kernel/ROM
I can leave it for ages or even use it for a while, and it stays at 100% but below 100% it doesn't do this
However I have noticed that this occurs more on some kernels than others. eg. Bricked which I am using now, does not last as long on 100% and goes down normally from there.
I have read people thinking their battery life is amazing at 100% but honestly I think its a bug or something in the reading
Please correct me if I'm wrong
Click to expand...
Click to collapse
Its a possibility I never had this expierence before 4.1.2 got put out. I honestly think that it was a bug introduced. Or something not entirely sure. Thanks for participating.
Sent from my Galaxy Nexus
ÜBER™ said:
Its a possibility I never had this expierence before 4.1.2 got put out. I honestly think that it was a bug introduced. Or something not entirely sure. Thanks for participating.
Sent from my Galaxy Nexus
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Honestly, I have noticed it since the first few days I had it, on 4.1 and 4.1.1 (I got mine on release weekend)
No problem mate I am actually glad someone else has noticed it as a bug or something, not amazing battery life lol
markj338 said:
Honestly, I have noticed it since the first few days I had it, on 4.1 and 4.1.1 (I got mine on release weekend)
No problem mate I am actually glad someone else has noticed it as a bug or something, not amazing battery life lol
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Issue is I've never had this till just recently. It'll idle perfectly after a full charge at 100% but start messing with it and it'll drop 2% every time I let it idle every 3-4 hours. Hell not even that long some times. Using betterbatterystats to see if its an app. As I see that the CPU time using States doesn't match the display time. So its awake when the screen is off and isn't showing up in the battery graph.
Sent from my Galaxy Nexus
Is it not normal for a battery to die even if a device is not being used? I don't see how it would remain the same % if its not plugged in.
Sent from my Nexus 7 using XDA Premium HD app
DirtyShroomz said:
Is it not normal for a battery to die even if a device is not being used? I don't see how it would remain the same % if its not plugged in.
Sent from my Nexus 7 using XDA Premium HD app
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Well it would eventually. But this thing should not be loosing percentage that quick.
Sent from my Nexus 7

Nexus 4 dropped from 100% to 0%

Nexus 4 dropped from 100% to 0% while being in use. It was being used with usual apps like Maps, Twitter etc when all of sudden connections went AWOL.. managed to get it on only after connecting in charging for a while but it shown 0%-1% charge only.
https://twitter.com/nkumar_/status/369770908505735168
https://twitter.com/nkumar_/status/369772545429368832
Any suggestions welcome. I have placed the phone in charge via USB mode as of now
Stock 4.3 Android, not rooted
Sounds like a faulty battery. Why not RMA the thing for a replacement?
Can you put your phone on bootloader mode and leave it there to see how long does it take until it comes off?
Sent from my Nexus 4 using Tapatalk 4
Ace42 said:
Sounds like a faulty battery. Why not RMA the thing for a replacement?
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Bought it this when it was launched in November. Working fine since then.. shouldn't be faulty all of sudden.
Seems SW flaw considering the fact that flat graph before sudden drop. No battery drain despite of usages? Shouldn't be
andyabc said:
Can you put your phone on bootloader mode and leave it there to see how long does it take until it comes off?
Sent from my Nexus 4 using Tapatalk 4
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Already managed to recover it from the dead state and its on charging.. 9% by now
Really dont' think its a fault in the phone had faced similar issue but it was while charging, Plugged the phone at 5% battery and after 10mins it was 100%. Could be related to the OS also, Charger the phone till 100% and use it again should be fine now.

Ok, this has to be glitch....

How is this possible? Last night my Nexus 7 shut down at 14%, right after the battery warning.
Fully charged afterwards and not touched for 12 hours. This has to be a glitch.
Anyone know if it's possible to reset the battery stats?
Sent from my Nexus 7 using xda app-developers app
joetang97 said:
How is this possible? Last night my Nexus 7 shut down at 14%, right after the battery warning.
Fully charged afterwards and not touched for 12 hours. This has to be a glitch.
Anyone know if it's possible to reset the battery stats?
Sent from my Nexus 7 using xda app-developers app
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Click to collapse
Just try a couple of reboots...
https://play.google.com/store/apps/details?id=com.nema.batterycalibration
Try to calibrate your battery and reboot.
Sent from my Nexus 7 using xda app-developers app
Shut your N7 down, put it on the charger till it is really full, then power up your N7 till it's fully booted, unplug and you should be good to go again. Have had a similar problem and this solved my problem
Sent from my Nexus 7 using Tapatalk 4
Code:
rm /data/system/batterystats.bin
It would be best to do this from recovery.
weedy2887 said:
Code:
rm /data/system/batterystats.bin
It would be best to do this from recovery.
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Google employees have gone on record to say that this doesn't actually do anything. Just power cycle a few times and see if it comes back.
Rirere said:
Google employees have gone on record to say that this doesn't actually do anything. Just power cycle a few times and see if it comes back.
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Read the thread again. He is asking how to fix his BUGGED stats, not what is the latest trend in illusionary battery tweaks.
If his database is bugged and not being reset, nuking it is the fastest way to fix ****.
weedy2887 said:
Read the thread again. He is asking how to fix his BUGGED stats, not what is the latest trend in illusionary battery tweaks.
If his database is bugged and not being reset, nuking it is the fastest way to fix ****.
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Click to collapse
I agree with @Rirere...
This from Dianne Hackborn (Android framework engineer)...
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
Rgrds,
Ged.
ok no need to calibrate the battery stats in this case. Just reboot and the problem should be gone.
Note: you will see the stats will reset on the next charge.
Thanks for the replies.
It seems like Fotogravin's method did the trick. Though the initial boot required me to hold on to the power button a bit longer than usual.
On another maybe related note, has anyone found that the Nexus 7 sometimes charges slowly? I left it on charge from around 17% and after 5 hours or so, it only charged to around 70%.
It's not the first time it's happened either...
joetang97 said:
Thanks for the replies.
It seems like Fotogravin's method did the trick. Though the initial boot required me to hold on to the power button a bit longer than usual.
On another maybe related note, has anyone found that the Nexus 7 sometimes charges slowly? I left it on charge from around 17% and after 5 hours or so, it only charged to around 70%.
It's not the first time it's happened either...
Click to expand...
Click to collapse
I'm experiencing this exact series of problems currently. No amount of reboots will help. It decides at around 15-20% that it's actually dead and powers down. Now I'm sitting here in TWRP recovery, full brightness, and it's been running for 10 mins now without problem. Talk about dead battery....NOT!
I'm going to let this recovery menu run til it ACTUALLY dies, then charge it from 0% and hope that it will actually run down correctly.
nickmv said:
I'm experiencing this exact series of problems currently. No amount of reboots will help. It decides at around 15-20% that it's actually dead and powers down. Now I'm sitting here in TWRP recovery, full brightness, and it's been running for 10 mins now without problem. Talk about dead battery....NOT!
I'm going to let this recovery menu run til it ACTUALLY dies, then charge it from 0% and hope that it will actually run down correctly.
Click to expand...
Click to collapse
No worries - well-known issue. We have a thread/fix for this. It's a sticky, but I'll provide a quick link...
http://forum.xda-developers.com/showthread.php?t=2090826
billykxda said:
No worries - well-known issue. We have a thread/fix for this. It's a sticky, but I'll provide a quick link...
http://forum.xda-developers.com/showthread.php?t=2090826
Click to expand...
Click to collapse
Wow, thanks for the info. That literally is 100% correct description of my issue. Every last detail. I'll see if I can fix it.

Battery calibration anyone succeded?

Hi I have a battery calibration problem on my GT-N5110 Note 8.0 that I bought refurbished through amazon. I know it is the calibration since the battery usually drains pretty fast and when it gets to 1% it stays there for around half to one hour of continuous use. Also sometimes when I'm charging it, it jumps from around 60% to 100% and "charged" shows up right after that happens, when I unplug it and use it, then it goes down normally (fast) 1% at a time, even though that big jump while charging happened.
I have tried several "full cycles" without success and haven't been able to find a real way to calibrate the battery meter, neither here or on google, and since I didn't buy it in my country, local samsung support say they can not help me.
I'm on 4.2.2 leak rooted and the drain has been present since I was on 4.1.2 stock.
If someone can get a hold of how to calibrate, it would be really nice if you could share it! Thank you!
Sent from my GT-N5110 using Tapatalk 4
have u try this?
cfchong said:
have u try this?
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Click to collapse
No, but I tried battery calibration and didn't do a thing, I will try this and report, though I don't think it will do anything. Thanks!
Sent from my GT-N5110 using Tapatalk 4

Note 7 battery meter is stuck...

Has anyone noticed the battery percentage on their replacement note 7 stuck at 100% when it should be around 30%??
pluigie said:
Has anyone noticed the battery percentage on their replacement note 7 stuck at 100% when it should be around 30%??
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Mine isn't.
You shoukd probably state whether you are rooted or not though, and what firmware version you have.
Sent from my SAMSUNG-SM-N930A using Tapatalk
Stock phone not rooted. Only think I have aside from a few apps is nova launcher. Android version 6.0.1. Thanks for the reply
I did notice weird spikes on the battery graph. I have actually had it off the charger since 6:10 this morning. At one point I did plug the charger in for about a min. to see if that would reset it after trying to reboot the phone a couple of times to see if that would work. Apparently that just reset the battery stats. I'm really confused because I've been messing with it most of the day playing games,youtube,xda and music just to see if I can get the battery to drop or die. It just keeps on going though with no sign of any battery drain other than a little lag here and there. This phone seems to not like more than 3 apps open at once before it starts to lag.
OK so around 5:30 the phone died. I plugged in the charger and the battery icon you get when there's not enough juice to turn on the phone showed 0%. I waited til 15% and turned the phone back on. It seems back to normal now but we'll see when it gets to 100%
I think the AT&T update for the green battery messed up the phone. I'm hoping the September security update will fix the issues.
I think your right. 2nd battery cycle since the issue and all seems well. Thanks
I had a weird thing happen. My device was off. I plugged in the charger and battery immediately dropped from 90+ to 15℅ then showed a red triangle briefly.
Sent from my SAMSUNG-SM-N930A using XDA-Developers mobile app
I just read through the thread to catch up. I dont think it's the update because most of us have it (myself included), and are having no issues (reported anyways). Many of us replaced our phones though.
First, do you have the fixed Note7, or the defective (combustible) one?
Second, if you have a fixed version, you may have a bad battery and should get it exchanged as a defective unit.
If you have the version that was recalled, then yes, this may indeed be the update's fault, but at this point, I wouldn't expect it to get fixed. It could be some sort of glitch caused by some safety procedure implemented in order to prevent to batteries being charged completely, or something. Who knows.
Sent from my SAMSUNG-SM-N930A using Tapatalk

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