Very poor battery life after marshmallow upgrade - Nexus 9 Q&A, Help & Troubleshooting

Hello,
i recently upgraded my Nexus 9 to Android 6.0 (Marshmallow MRA58K) with the factory image. So the tablet was completly wiped. The system is completly stock, no root.
After that i'm experiencing very poor battery life (see attached screenshot). Basically, i unplugged the tablet this morning (at 100% battery) and it was lying around in the living room all the day, doing nothing and this evening the battery was down to 63%. Battery optimization is turned on.
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I don't even know what the process "99113" is doing.
Any suggestions?
bigtreiber

If there are only 3 things each using 1 % of the battery life then its sounds like the battery reader isn't properly calibrated. Let it run till it shuts off then plug it in and let it charge back up. If if that solves it. I am rooted but have no real changes that would effect power and I get 3-4 days on my 6.0 install.

As above post. If anything, I am getting better battery life with Marshmallow.
Sent from my Nexus 9 using Tapatalk

I'm getting better battery as well.....it does take a while for it to calibrate itself after the update.

Here is a screen cap of my battery life:
https://drive.google.com/file/d/1xTt8XTttm_6NRs46QNbhUaF9zqEwtS5HpA/view?usp=sharing

Okay, after "calibrating" it seems to be better.
But, what i noticed, there seems to be a massive battery drain when connected to a 5 GHz WLAN. Anybody seeing the same thing?

Poor Battery
bigtreiber said:
Okay, after "calibrating" it seems to be better.
But, what i noticed, there seems to be a massive battery drain when connected to a 5 GHz WLAN. Anybody seeing the same thing?
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My battery life has been severely degraded as well after installing the OTA update to Marshmallow. I have not tried calibrating the battery and will try that after my battery drains to 0 and the device turns off.

Its better to charge your device before it runs out...

Factory Reset over Recovery
I had the same symptoms like running out of battery in one day doing nothing.
Problem was solved after a factory reset in recovery (Power+Down)
"Battery Calibration" did not work at all

Related

[Q] Battery

I am having trouble, the charging LED never turns green for me. It was plugged in overnight. I installed an app called "Battery Monitor Widget" and left it plugged in. The highest it reaches is 3801mAh out of 3840mAh. It was at this state for 2 hours, saying 99% charged. The tech specs say this is a 4000mAh phone, is that rounded from the 3840 the app tells me? or is something terribly wrong with my battery? Anyone else experiencing this?
also, if anyone can recommend a battery monitor app, I would appreciate it. I downloaded the first one I came across that gave actual numbers instead of a bar.
it finally made it to 3840mAh and turned green. It has been plugged in since my first post. Can anyone verify that their phones battery capacity is 3840mAh?
Yes, mine is the same.
I use juice defender ultimate, set cpu and juice plotter.
Works great for me.
I just installed the free JuiceDefender app and it appears to need root to work:
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Thank you both. Ever since I left it plugged in for basically two days, it has been charging and turning green in what I consider a reasonable amount of time. I still think I have an underlying problem and expect to have a shortened batter life, but I also think I will upgrade to the next 7" from HTC before it causes frustration.
frh1: your added picture made me even more excited to own the flyer.
I think you're good. These batteries have to go through some charge cycles before the calibrated correctly. Some batteries will never see 100% after a few uses. Both of my Sammy 10.1's would say they were at 100 then as soon as you unplugged them they were down to 98. I thought there was something wrong with my view because it was taking a while to charge. My first view charged very quickly. I guess I didn't notice on the first one because i was playing with it so much, but after a few full drains and then charges it started charging faster. That's one of the things I like about the view, it charges fast.

Android or CM7 issue?

This is my first Android, but what would cause my battery to drop from 51% to 18% after a reboot and then 10mins later raise back to 30%?
I'm running CM7 since yesterday
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Sent from my SGH-I777 using Tapatalk
This can come from not have a calibrated battery. If you didn't flash at 100% if will jump around the first few times. Give it a bit. Sometimes it will actually go up.
Fuel gauge glitch, happens sometimes, don't listen to people talking about battery calibration, our gauge is "convergent" and does not require calibration.
Sometimes it just flakes out. The MAX17042 assumes a "relaxed" (not recently charged/discharged heavily) battery on initialization. If something charges/discharges heavily after a reset it'll become "off" for a few hours. Just charge your phone up. It was most likely closer to 20-30% to begin with.
I figured 30% was the closer to the correct %
Sent from my SGH-I777 using Tapatalk
Entropy512 said:
Fuel gauge glitch, happens sometimes, don't listen to people talking about battery calibration, our gauge is "convergent" and does not require calibration.
Sometimes it just flakes out. The MAX17042 assumes a "relaxed" (not recently charged/discharged heavily) battery on initialization. If something charges/discharges heavily after a reset it'll become "off" for a few hours. Just charge your phone up. It was most likely closer to 20-30% to begin with.
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My bad. I always assumed it was that. It usually doesn't happen after the first charge though.
Happened me too about it i was 50% and when i turn off and re on will drop quick at 12%. I belive it maybe battery die quick only if use reboot all time. Whitout using reboot or restart as far as i know there battery return normal i guess...
Sent from my SAMSUNG S II SGH-I777 using Tapatalk

Battery Issues

My SGP5 battery has been wacky since day one. First few days I didn't think it would charge past 80%, but I found if you charged it overnight it would hit 100% (that's after an 8 hour charge to 80%).
Today it showed 100% all day. I booted it and now shows 30%. The settings battery status does not show actual time on the lower scale. Like I said I was at 100% all day, and the chart goes up to a 100% peak, but doesn't flatten or go down.... as if the battery clock stopped (not there is such a thing).
Can't do a battery pull... could rooting solve this issue? At least you can do a calibration with root. I just don't want to root if this will be fixed in an update. But I really don't like not really knowing how much battery is left.
I have a similar issue. It seems random- I use it all the time and literally 1/2 of the overnight charges I put it through it gets to either 80% or 100%. What I've noticed is that even when it says 80%, it still performed as if it was fully charged.
I rooted my device a few days after I got it and I honestly didn't notice the issue until after I rooted my device. So it may be different for you.
I'm not rooted. Have you tried something like: http://www.appbrain.com/app/battery-calibration/com.nema.batterycalibration or manual calibration deleting the battery stat file? I'll gladly root if it solves this problem.
savergn said:
I have a similar issue. It seems random- I use it all the time and literally 1/2 of the overnight charges I put it through it gets to either 80% or 100%. What I've noticed is that even when it says 80%, it still performed as if it was fully charged.
I rooted my device a few days after I got it and I honestly didn't notice the issue until after I rooted my device. So it may be different for you.
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Same here, mine has all the same problems and also the Horizontal calibration never settles
Sent from my SAMSUNG-SGH-I727 using xda premium
To show how squirrely battery charging is, I monitored with Battery Monitor Widget and looks like this, one charge overnight without unplugging:
(each grid line is 1 hour, little over 1 day shown, screen was NOT on during charging)
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[Q] My battery drains in 1-2 hours, takes longer to charge...

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I have the stock CM10 rom installed, and it usually does something like this that only lasts for a few days and goes back to normal. But this has lasted for almost a month now. As you can see in the pic, sometimes its says charging but doesn't "gain" energy, and when it does in drains extremely quickly. When it is asleep or turned off it still drains. I tried charging it with a different cord, then with my computer. Then I tried using a GS3 cord & adapter, it charged faster, but I couldn't tell how fast it drained since I wasn't using it.
Do I need to replace the battery? If I do, will it cost a lot, because if it does I'm just going to get a Note or DNA....
Try using a battery calibration app, people say to use it when you flash a new rom. Also, it might be an actual problem with the battery itself. Try getting a replacement battery if so. But then again, before you do that try going to stock and see if the problem is still present.
Sent from my YP-GI1 using Tapatalk 2
once it charges I'm going to see if that will help. and my son deleted my stock rom (long story), so I'm stuck on jb/ics.
Also its recommended after you calibrate to drain the battery to 0% and then recharge to 100% afterwards. And as far as the stock rom goes, you can restore using Odin and download mode
Sent from my YP-GI1 using Tapatalk 2
wow it worked, the battery lasted from 5:30 to 7:10, a new record since I ever brought the device
coolwiththecool2 said:
wow it worked, the battery lasted from 5:30 to 7:10, a new record since I ever brought the device
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How much screen on time did you get?

[Q] Jumping battery

The problem:
Lately, well it's been quite a while actually... my battery stats seems to jump whether i'm charging or discharging.
While charging sometimes it jumps from 30% > 80% > 100% within 15 minutes (this is what happened today) while discharging, it jumps from 90 > 50 (this quite often) then to 20% > 5% then off. My max usage time without charging is usually less than 1 hour.
I've tried to do battery reset (charging while the phone is off until full, reset battery data, then use it till it 100% drained)
I've tried to charge from 30% to about 80/90% then use it as usual.
I used original charger from motorola, used blackberry charger, samsung charger, no difference.
Unfortunately no good. Currently the ad hoc solution is to use battery powerbank constantly while I'm not near electrical plug. But its bulky and well not the best solution.
My question is, does the problem lies in the battery or at the battery controller. Is there anyway to test where the culprit is?
Thanks in advance
Battery daemon Moto uses is imperfect in calculating the battery percentage.
However, the jumps you experience and the backup you're getting, looks like your battery has worn out.
Reply
neo.ank said:
Battery daemon Moto uses is imperfect in calculating the battery percentage.
However, the jumps you experience and the backup you're getting, looks like your battery has worn out.
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Hi, thanks for the input. My question then, will replacing the battery help to solves the problem? Cos lately the battery stats seldom runs over an hour. Here's a screenshot of my latest battery stats...
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Thanks in advance, all
galeshka said:
Hi, thanks for the input. My question then, will replacing the battery help to solves the problem? Cos lately the battery stats seldom runs over an hour. Here's a screenshot of my latest battery stats...
Thanks in advance, all
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Your battery is definitely worn out. Replace it.
A new battery will certainly remove the issues..
Use the 10% mod though else you might still have infrequent jumps..

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