Battery not discharging properly - Nexus 7 (2013) Q&A

Since installing 4.4.2 my battery isn't discharging, at all! It's been stuck on 100% for the past four days. I haven't really used it much since but the battery should be way down by now.

Isn't that a good thing?
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crazyzombie said:
Isn't that a good thing?
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It is, but there's obviously something wrong.

cinco312 said:
Since installing 4.4.2 my battery isn't discharging, at all! It's been stuck on 100% for the past four days. I haven't really used it much since but the battery should be way down by now.
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Click to collapse
Are you still having the same issue?
Because I think I'm maybe having the same problem.
My tablet keep shutting off at 40% as if is 0%. It all started since this past weekend.
My tablet is unrooted ,try to search the web for a solution but haven't found one yet.
I'm trying avoiding to do a factory rest because I read the issue still persist.
Everytime I recharge my tablet it stay a long time on 100% and the moment it reach 40% it shut down a,msg appear saying battery low and shut off.
Also take note I've read about those app calibrator but keep reading that a myth.
Let me know if your still having the same problem?

No, I actually fixed the issue. Believe it or not I used a calibrating app and Root Cleaner and did a full clean and it appears to be working as normal now. I'll add later which battery app I used, can't remember the name.
EDIT : Actually it was just Root Cleaner. It has a batter calibration setting.
Sent from my Nexus 7 FHD using Tapatalk 4

Related

Battery Doesn't to Charge 100%?!

I just got a Nexus and rooted, etc, using the toolkit.
I've noticed that the battery will not charge all the way to 100%, no matter how long i let it charge.
Yesterday for example, i used the phone till it died, then connected the phone to the charger over night.
This morning i turn the phone off and see that the battery is only at 92%!?
How can i fix this?!
Currently running Vicious Jell Bean v4.
Perhaps this is why there is an option to clear battery stats in clockwork, yes?
animal24 said:
Perhaps this is why there is an option to clear battery stats in clockwork, yes?
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That doesn't actually do anything aside from erasing your battery graph.
Yeah from what I've read, clearing the battery stats using CWM or some other calibration app, didn't take care of the whole problem.
Any other ideas?
Sent from my Galaxy Nexus using xda app-developers app
Does the kernel you are using have BLX?
That can be used to put a limit on how high a battery charges, maybe you changed the value by accident or it was set that way by the dev.
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Have you tried doing a trickle charge?
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nodstuff said:
Does the kernel you are using have BLX?
That can be used to put a limit on how high a battery charges, maybe you changed the value by accident or it was set that way by the dev.
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How can i tell?
Not sure but i didn't use any other kernel except the one that came with the Vicious Jelly Bean rom.
I just noticed that you can change the mAh capacity in the "Battery Monitor Widget" by 3C.. it currently shows that capacity is 1750mAh when the stock battery states 1850mAh. Should i change the value now and drain the Battery completely, then full recharge?
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negrobembon said:
Have you tried doing a trickle charge?
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Have not.
What exactly is a trickle charge?
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I noticed the same thing when I was running Vicious v3, it would stop at 95%. I'm running latest bugless beast now and the issue is gone.
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perroh said:
Have not.
What exactly is a trickle charge?
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I think thats what is called, My phone never goes past 99% no matter how long i leave it there so now when it reaches said 99% i unplug it and re-plug it inmediately and it goes up to 100%
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what the crap...
I super-wiped, deleted dalvik cache, and factory reset, and flashed the Rev' HD rom, and STILL doesnt charge past 92%?!?!
Perhaps its the "Battery Monitor Widget" from 3C and the data stored?!??
Same happened to me. And it's getting worse progressively - first it was charging to 89%, then it didn't go above 79, now I can rarely see it go over 60
Since day one my phone never got to 100%, it always stops at 99%...
My phone was able to charge to 100% within reasonable time. I've changed a few firmwares with full wipe, that didn't impact neither the ability to charge to 100% when it was able to do so nor the inability to charge fully when the problem surfaced.
I suspect that problems started after I dropped my phone (wasn't a hard drop, just a fall to a hard surface from 0.5 m, no visible damage).
Is it possible that the battery gets damaged somehow?
Same problem
perroh said:
what the crap...
I super-wiped, deleted dalvik cache, and factory reset, and flashed the Rev' HD rom, and STILL doesnt charge past 92%?!?!
Perhaps its the "Battery Monitor Widget" from 3C and the data stored?!??
Click to expand...
Click to collapse
perroh said:
I just got a Nexus and rooted, etc, using the toolkit.
I've noticed that the battery will not charge all the way to 100%, no matter how long i let it charge.
Yesterday for example, i used the phone till it died, then connected the phone to the charger over night.
This morning i turn the phone off and see that the battery is only at 92%!?
How can i fix this?!
Currently running Vicious Jell Bean v4.
Click to expand...
Click to collapse
Same problem here, my phone charge until 84% BUT:
I tried with a battery of my friend that was at 95% and my phone showed it 60%!
The issue is in the way that our phone measure the battery, but i already tried wipping bat stats and nothing...
I also wiped all the things and re-installed 4.2.2 and same problem
Why would you even bother eating your time wiping battery stats? It had absolutely nothing to do with charge indication.
Sent from my Galaxy Nexus using Tapatalk 2

How long does it take for a full charge? [Culprit: Bad USB cable]

Well I need to know from you guys, it's not that I don't know, but need to reconfirm. I think mine is taking much lower now than it was. A full charge, say from 5% to 100%, with Stock charger?
Thanks in adv.
Sent from my GT-N7100 using Tapatalk 2
roughly 1 percent for 1 minute. should be charged in a couple of hours
jujuburi said:
Well I need to know from you guys, it's not that I don't know, but need to reconfirm. I think mine is taking much lower now than it was. A full charge, say from 5% to 100%, with Stock charger?
Thanks in adv.
Sent from my GT-N7100 using Tapatalk 2
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Click to collapse
~2h30
Sent from my GT-N7100 using xda app-developers app
Charging from 0 to 90% happens in no more that 2 hours I would say. from 90% to 100% the charging rate gets slowed a lot. So basically shouldn't take more than 2:30 hours from 0 to 100%.
Thanks guys. Now I remember it was 2 hours 45 mins for me too at first.
Today it took 4 hrs 30 mins. Reason? I'll say tomorrow, after confirming.
Jeez PowerAMP!
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2 and half
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I rarely charge it to 100%, usually to 70 or 80%. much better for the battery in the long term
Any research or refrence for this longevity ? I heard its always better to charge 100% ?
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http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
table 4
madazam said:
Any research or refrence for this longevity ? I heard its always better to charge 100% ?
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bobyboby said:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
table 4
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Thanks man ! Really helpful article...
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you are welcome. the general rule is to try to 1) avoid charging to 100%, really diminishing return the higher it goes; and 2) avoid deep discharge cycle. I usually use 40% of the capacity at work everyday, so charge to ~70% in the morning, use down to ~30% and then charge again. charging time in this range is rather linear, about 1 percent a minute
madazam said:
Thanks man ! Really helpful article...
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jujuburi said:
Well I need to know from you guys, it's not that I don't know, but need to reconfirm. I think mine is taking much lower now than it was. A full charge, say from 5% to 100%, with Stock charger?
Thanks in adv.
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Yeah, it happened to mine too few days back. My Note2 went crazy, taking around 7-8 hrs to fully charge from 15%. So, i tried searching about the problem on google but to no avail. Did a factory reset with cache wipe and problem solved :good:. Now it takes about 2.5 hrs to fully charge from say 10% (using the samsung wall charger with phone switched on). I can only say that the slow charging was caused due to some software but don't know exactly which one? You may as well try the hard reset if anything else doesn't work out .
P.S : Btw i'm on stock fw with no root or mod! Only did some OTA updates couple of weeks ago.
Guys, we have a changeable battery and is already writed Inside to android that it won't charge to 100%, it just shows at 100% but really it is at 95%-98% that feature came with 2.2.1 update 2yrs ago.
And we can change the battery after 2yrs for 20-30$, unlike Nokia lumia users or HTC one x or iPhone users.
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Dpk1 said:
Yeah, it happened to mine too few days back. My Note2 went crazy, taking around 7-8 hrs to fully charge from 15%. So, i tried searching about the problem on google but to no avail. Did a factory reset with cache wipe and problem solved :good:. Now it takes about 2.5 hrs to fully charge from say 10% (using the samsung wall charger with phone switched on). I can only say that the slow charging was caused due to some software but don't know exactly which one? You may as well try the hard reset if anything else doesn't work out .
P.S : Btw i'm on stock fw with no root or mod! Only did some OTA updates couple of weeks ago.
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Yeah, thanks. But if you've Watchdog installed then you can see which app is going over threshold and keep running on background. And yes, this time, again, the culprit was PowerAMP! Uninstalled it and voila. The same app created problem for me when I had my S2, charging was pathetically slow, even I had to go to SC and they said battery is gone. But I didn't believe and asked a techy friend and he said it might be some app, and damn right he was.
Anyway, if anyone having the same issue like mine, that is, charging duration has increased with Stock charger, then install Watchdog (the lite version will do) and see who is the culprit.
I have no idea how a top app like PowerAMP could cause this! Jeez!
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The same problem happen to me few days ago..during that that i was charging using extension cable where 3 pin plug is sharing with my note 2, laptop n tablet charging @ the same time..its take nearly 4 hour for fully charge the note 2 while im using n charging my laptop n tablet..but, from that i understand that when the connection all charging at the same time on the same 3 pin plug, the load are higher which decrease the current value (current drop)..that the reason why my note 2 charging slow..check if OP case is same like me??
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bobyboby said:
you are welcome. the general rule is to try to 1) avoid charging to 100%, really diminishing return the higher it goes; and 2) avoid deep discharge cycle. I usually use 40% of the capacity at work everyday, so charge to ~70% in the morning, use down to ~30% and then charge again. charging time in this range is rather linear, about 1 percent a minute
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Click to collapse
Is there a app that can alert us with a beep or something when battery level reaches a certain % ?
Frm 5% to100% 2and ahalf hrs
naimmkassim said:
The same problem happen to me few days ago..during that that i was charging using extension cable where 3 pin plug is sharing with my note 2, laptop n tablet charging @ the same time..its take nearly 4 hour for fully charge the note 2 while im using n charging my laptop n tablet..but, from that i understand that when the connection all charging at the same time on the same 3 pin plug, the load are higher which decrease the current value (current drop)..that the reason why my note 2 charging slow..check if OP case is same like me??
Sent from my GT-N7100 using xda app-developers app
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Click to collapse
Hmm! Thanks.
Well I wasn't using the same plug point but the charger was connected to my Belkin Gold surge protector, where my whole PC and monitor is connected. Could that be a problem?
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jujuburi said:
I have no idea how a top app like PowerAMP could cause this! Jeez!
Orly? Oo I use PowerAmp and have no such problems. Use betterbatterystats to find out what's going on... It's not PA.
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Is this long-charging-time problem a single occurrence or you are consistently having this problem?
jujuburi said:
Hmm! Thanks.
Well I wasn't using the same plug point but the charger was connected to my Belkin Gold surge protector, where my whole PC and monitor is connected. Could that be a problem?
Sent from my GT-N7100 using Tapatalk 2
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Is battery suppssed to be this bad?

This is my first tablet and I expected battery to be better than this. Day 3 with the tablet, stock unrooted.
VinBertinelli said:
This is my first tablet and I expected battery to be better than this. Day 3 with the tablet, stock unrooted.
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Yes is it supposed to be better then that. Although, it is possible the battery power software has a bug in it. But it should not be dropping like that when idling.
VinBertinelli said:
This is my first tablet and I expected battery to be better than this. Day 3 with the tablet, stock unrooted.
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Theres definitely something up with your unit. Have you let it cycle from a full charge to 0 a couple times?
alexjzim said:
Theres definitely something up with your unit. Have you let it cycle from a full charge to 0 a couple times?
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This shows nothing without actual screen on time.
I dont think the op's battery is that far off. An hour of screen on time plus an hour of streaming music. Streaming uses a lot of battery.
If you kept at that rate it would be able 3 hours screen time and 3 hours music streaming.
Sent from my Nexus 4 using xda premium
Yeah, media server is a battery killer I've noticed.
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michaelg1030 said:
This shows nothing without actual screen on time.
I dont think the op's battery is that far off. An hour of screen on time plus an hour of streaming music. Streaming uses a lot of battery.
If you kept at that rate it would be able 3 hours screen time and 3 hours music streaming.
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67% with one hour screen time is a bad. Should be around 80% at the least with screen on time of one hour.
My battery isn't great either. But not as bad as op
Sent from my Nexus 7 using Tapatalk 2
Posted a thread about mine but I thought I may as well post here too...
My battery sometimes drops more than one percent at a time.. Is that unheard of... Is that just the battery "settling in"?
I don't have any issues with my battery.
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Battery is fantastic here
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Krowbarr said:
Battery is fantastic here
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+1 I have the same time +-
1st full charge
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I will try to charge today 2A charger maybe will be better..
If anyone rally thinks the battery is an issue try stock and try removing the apps that run all the time. This would at least tell you if it is your battery out just processes. It is tough these days to not have a bunch of crap running all the time. Many of the app devs add these things trying to find info, etc
Also.. Sometimes will run the battery down faster than others. Streaming media is a killer, video, gaming, etc.. Don't expect mega screen time doing that.
Also.. Check your brightness.
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Battery usage spike

I'm not sure what's going on with the graph from my battery usage page. For some reasons, it would jump to 100% which is impossible. Anyone of you has seen something like this before?
Thanks in advance!
Sent from my Nexus 7 using xda app-developers app
Same here... Every discharge cycle. But performance and battery life are not compromised....
I noticed the same thing today for the first time. But not as bad or as much as yours is showing.
I see those spikes on my Nexus 7 2013. And I get a terrible battery as well. My tablet loses about %30 of its battery charge during night when it is in sleep mode. Does anybody experience the same issue? Is there a way to fix this?
rezaaz said:
I see those spikes on my Nexus 7 2013. And I get a terrible battery as well. My tablet loses about %30 of its battery charge during night when it is in sleep mode. Does anybody experience the same issue? Is there a way to fix this?
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You must have an app installed that's causing that much drop off. Mine drops off like 2%.
Sent from my Galaxy Nexus using Tapatalk 2
I have seen spike on mine, too, but not up to 100%, only 1-2% more than its actual level. I thought it's because it was the first charge cycle and the reading weren't yet calibrated. I'll see if they go away after a few more cycles.
I don't have battery drain, as well, I lose 2-3% overnight with wifi and sync still on.
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con100 said:
You must have an app installed that's causing that much drop off. Mine drops off like 2%.
Sent from my Galaxy Nexus using Tapatalk 2
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Oh. Bummer. Do you know how I can find which application that is?
rezaaz said:
Oh. Bummer. Do you know how I can find which application that is?
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You can try an app called BetterBatteryStats it gives you a more detailed look at what's using your battery.
Sent from my Nexus 7 using Tapatalk 4
Hey everyone,
My Nexus 7 (2013) is having the same problem with battery graph. There are about 2-3 spikes to 100% in every discharge cycle.
I noticed this problem has been reported in different cycles, but no one seems to be able to give a definite answer of what the source of this problem is.
BTW, after a reset to factory settings, the problem still persists.
ANY idea why this is happening???
SEARCH b4 posting!!!
http://forum.xda-developers.com/showthread.php?t=2381550
henklbr said:
SEARCH b4 posting!!!
http://forum.xda-developers.com/showthread.php?t=2381550
Click to expand...
Click to collapse
You just keep referring to that forum without actually answering my question, even on that forum

What's wrong with my phone?

So I have a zero lemon 9300mah battery and got the mean bean rom been almost a month that I charge my phone fully and in 2 hours it goes to 50% so I though it was the battery. I changed the battery to a new one still died fast than I thought it was my rom. So I changed that last night to liquid smooth and charged overnight. Woke up at 8.30 and now it's 11.00am I am at 33% from 100% what's going on please help me.
Sent from my GT-N7105 using XDA Free mobile app
Check your battery stats... See whats keeping your phone awake
mrevankyle said:
Check your battery stats... See whats keeping your phone awake
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Click to collapse
how do i do that?
sofia-captivate said:
how do i do that?
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Click to collapse
Settings/battery
If your screen/display isn't the top thing then in most cases you have a problem
This is what mine looks like
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This may sound silly, but do you ever turn your screen off, lol.
Just kidding, but that's pretty bad.
Click the screen on and see what your time is. Is that with the Zero Lemon?
Sent from my SGH-I317 using Tapatalk
Either a CPU max run state...or a serious wake lock...or both..
Zero lemon getting drained like that is a serious problem...
I would suggest a "complete" wipe...and the flashing of a rooted stock rom as a test base...
If the device still exhibits the behavior...then a hardware issue may be at Work here...
If the device gets hot to the touch....then get the device to a stock and clean state...so some unmodified testing can take place...
Let us know...g
Sent from my SAMSUNG-SGH-I317 using XDA Premium 4 mobile app
Even if you leave your screen on, never turn off zerolemon should still last you much longer than 4 hours of screen time. I have one, I get 3 days usage out of it

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