Insane battery drain despite different roms - Shield Tablet Q&A, Help & Troubleshooting

I've tried stock 5.2 and different roms. Even in TWRP I find the battery is draining insanely quick. I charged it up to 100% and when I went into TWRP, wiped everything and installed Lineage OS and gapps, it dropped about 5%. At this point I'm not sure if the battery is just basically on its last legs from being on 5.3 for so long. Does anyone have any suggestions? Something else I can try flashing to see if it fixes the insane battery drain? I'm considering just selling the thing off and buying something else, but would want to try and salvage this thing if I can.

AllenR85 said:
I charged it up to 100% and when I went into TWRP, wiped everything and installed Lineage OS and gapps, it dropped about 5%.
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Flashing a ROM and starting it up (and installing apps) uses a lot of processor power, and therefore a lot of battery. A 5% drop flashing a ROM and starting it the first time would be completely expected. After flashing a new ROM I would recommend you use it for a day or so(drain battery to almost empty) and recharge; to let the ROM "settle in" and the battery meter to calibrate. Do this before passing any judgment on battery.
Severe battery drain has been a consistent issue on all stock Nougat builds. But I can't speak for Lineage, as I only run stock ROM (rooted). But it's an OS issue, not a battery issue. The worst case, if downgrade to Marshmallow, and it should fix the battery drain.

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heavy battery drain and mobile heating up since last evening

Hi,
I was running MIUIXperience V5 and everything was fine till got a random reboot last evening and after that, battery started draining very fast doing nothing 20-25% in an hour. Mobile is heating up a lot now back side near camera and charging also became very slow (30-40% in 4 hours). Tried full wipe and reinstalling the ROM but still the same issue, wiped battery stats as well.
I was getting 25-35 hrs before this so doesn't look like a fault in battery. Any help will be highly appreciated. Thanks.
Seems a hardware issue to me. Maybe try to swamp battery's and see if the current one you're using is busted.
DeuXGod said:
Seems a hardware issue to me. Maybe try to swamp battery's and see if the current one you're using is busted.
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Thanks for your help but I still doubt the battery as when charging in powered off, it charge well & quickly as before
Can you try another ROM? If it would work ok with another ROM that would put the hardware suspicion aside. If it still keeps the same with a different ROM, then it's most definitively a hardware issue.
DeuXGod said:
Can you try another ROM? If it would work ok with another ROM that would put the hardware suspicion aside. If it still keeps the same with a different ROM, then it's most definitively a hardware issue.
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I have tried another ROM and same ROM with clean install, they seem good as before the issue but as soon as I enable root permissions, battery started to drain fast again (35% in an hour)
got a similar issue with mine, usually my battery stills 20hrs, and that's ok for my usage, I'm running brainmaster cm9, but same with CDA 2.0.0, randomly the phone, in some case after a reboot or disconnecting power cable, start to drain battery and become hot, in battery usage stats AndroidOS is the main issue and android.process.acore the resource that never sleep,
I think this can came from a bad deep idle management on some rom-kernels combo or ics 4.0.4 issue, but I nobody to say this...
stremax said:
got a similar issue with mine, usually my battery stills 20hrs, and that's ok for my usage, I'm running brainmaster cm9, but same with CDA 2.0.0, randomly the phone, in some case after a reboot or disconnecting power cable, start to drain battery and become hot, in battery usage stats AndroidOS is the main issue and android.process.acore the resource that never sleep,
I think this can came from a bad deep idle management on some rom-kernels combo or ics 4.0.4 issue, but I nobody to say this...
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I tried different MIUI Roms but issue remained same. Then I installed Androxide after full wipe and now seems to be working fine (72% after 7hrs). Still can't figure out what is the issue that different variants of MIUI Roms after clean install and battery starts to discharge heavily.
Tried going back to MIUI but probelm came again and after restoring to Androxide, again working fine
moodi_ali said:
I tried different MIUI Roms but issue remained same. Then I installed Androxide after full wipe and now seems to be working fine (72% after 7hrs). Still can't figure out what is the issue that different variants of MIUI Roms after clean install and battery starts to discharge heavily.
Tried going back to MIUI but probelm came again and after restoring to Androxide, again working fine
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I suggest to install an app like Quick System Info anche see id there is a process running high on CPU usage: there you can see its log and try to understand what's happening...
BTW, I started to have some massive drain with the last CM9 nightlies: it was the Phone app that sucked all the juice in a few hours.
I wiped & reflashed dozen of times, checking if the drain was caused by some app, until I used Quick System Info and saw from the logs that the problem was the new 2g/3g toggle widget: I had set it to "3g preferred" but this caused a loop. Setting it to "2g only"/"3g only" fixed the issue.
First, MIUI is a Chinese ROM.
Second, Chinese things are always known for bad quality.
So MIUI is bad
Really, dude? Maybe you should take the tin foil hat off.

[Q] Heavy battery drain issue - help troubleshoot

Of late, I have been having heavy drain of battery on my Atrix 2. I am running JB 4.1.2 (672.300.404.ME865.Retail.en.05). Trying to troubleshoot it (including recalibration) since the last few days without luck.
The symptoms...
- Sudden shut down - Have had 50%+ charge levels. Goes down to 5% and shuts down within minutes. (You can see the random drops in the charge levels in the pic)
- Completely drained out battery charges from above 40% when plugged in & charges to 100% in no time. (that 67% charge in the attachment is within 5 mimutes of power plug in)
Does the battery need a replacement?
ravi-atrix2 said:
Of late, I have been having heavy drain of battery on my Atrix 2. I am running JB 4.1.2 (672.300.404.ME865.Retail.en.05). Trying to troubleshoot it (including recalibration) since the last few days without luck.
The symptoms...
- Sudden shut down - Have had 50%+ charge levels. Goes down to 5% and shuts down within minutes. (You can see the random drops in the charge levels in the pic)
- Completely drained out battery charges from above 40% when plugged in & charges to 100% in no time. (that 67% charge in the attachment is within 5 mimutes of power plug in)
Does the battery need a replacement?
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Click to collapse
Try changing battery... even i had same problem with Custom rom. Battery used to last only for 10 to 12 hours but now its more than 17 hours on JB 4.1.2 leak,,,,...Use stock rom. and remove any unncessesary apps and installl ROM again if u want :good:
How old is your Atrix 2? If over a year then battery surely begins to give lesser performance. Disable any other task killer / memory manager & just let OS do its thing. See if installing Media Scan disable from play helps & do not keep using random chargers, make use of original charger as received with phone. Finally see Better Battery Stats. It is said battery stats should never be wiped but see if it helps you and finally search for Apex's better battery life guide for many handy tips.
I disabled notifications, sync, froze higher wakelock apps & my battery life improved a bit but then it is no fun existing in a bare bones environment.
RAD7 said:
How old is your Atrix 2? If over a year then battery surely begins to give lesser performance. Disable any other task killer / memory manager & just let OS do its thing. See if installing Media Scan disable from play helps & do not keep using random chargers, make use of original charger as received with phone. Finally see Better Battery Stats. It is said battery stats should never be wiped but see if it helps you and finally search for Apex's better battery life guide for many handy tips.
I disabled notifications, sync, froze higher wakelock apps & my battery life improved a bit but then it is no fun existing in a bare bones environment.
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The phone is just about a year and half old. The drop in battery performance is just too drastic, sometimes it doesn't even last an hour after the charge. Will try to go back to original ROM and see if it improves else will probably have to go for a new battery pack.
ravi-atrix2 said:
The phone is just about a year and half old. The drop in battery performance is just too drastic, sometimes it doesn't even last an hour after the charge. Will try to go back to original ROM and see if it improves else will probably have to go for a new battery pack.
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Look like a battery problem to me its not the ROM but anyways turn off location services and wifi they are a big battery drainer
Use 2G when u dont need high speed.......
Try this app called Greenify https://play.google.com/store/apps/details?id=com.oasisfeng.greenify
(it helps to reduce wakelocks and improves your battery life)
:laugh: Let me know if it helped (btw chck your battery and see if its defected they are amny ways to chck it read up the forums )
i have the same problem whit any rom of 4.2. when the custom rom shows 5% i change to stock ics rom an that show me 45%
aspc2 said:
i have the same problem whit any rom of 4.2. when the custom rom shows 5% i change to stock ics rom an that show me 45%
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Think mine is clearly a battery issue. Replaced the battery with a new one yesterday and now the phone lasts 6 hrs at least on a single charge.
CM 10.1.3
I couldn't write to developer's forum so I'm asking here.
I've recently firmwared my AT&T A2 CM 10.1.3 and battery drains really fast! The previous build was CM 10.1 (25th of June). I wiped cache and dalvik cache and firmwared CM 10.1.3. At least 3 people report that thie batteries on this ROM drain slow.
What did I do wrong???
danger86 said:
I couldn't write to developer's forum so I'm asking here.
I've recently firmwared my AT&T A2 CM 10.1.3 and battery drains really fast! The previous build was CM 10.1 (25th of June). I wiped cache and dalvik cache and firmwared CM 10.1.3. At least 3 people report that thie batteries on this ROM drain slow.
What did I do wrong???
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Battery life varies so much from user to user that it is impossible to answer your question without A LOT more information.
Go here:
http://forum.xda-developers.com/showthread.php?t=1179809
Download the app and follow the directions in the op. That and reading through that thread itself should tell you everything you need to know about what is using up your battery.
That being said, everyone has different habits and expectations when it comes to their battery. What one person says is good battery life, another will likely say is bad. So just keep in mind that there is not a right or wrong, just what is right or wrong for you.
If I had a dollar for every time I said that, I'd be making money in a very weird way.
Thank you fro your answer. When I used previous version of CM the battery lasted 3 days with minimal using and turning the flight mode at night on.
As long as I installed newer version with JBX kernel the battery lasts 20 hrs max.
Power Tutor says that the most hungry apps are Android System and Kernel

[Q] Horrible battery life

I don't know if this is common but no matter what rom I flash I get horrible battery life. I always do a clean wipe, full wipe whatever you want to call it, phone lasts maybe 6 hours of usage. Also device sometimes gets very hot, rooted use twrp 2.8.5.0 and am on the latest firmware any ideas? When I use the stock rom battery seems fine. Thanks.
iguate12345 said:
I don't know if this is common but no matter what rom I flash I get horrible battery life. I always do a clean wipe, full wipe whatever you want to call it, phone lasts maybe 6 hours of usage. Also device sometimes gets very hot, rooted use twrp 2.8.5.0 and am on the latest firmware any ideas? When I use the stock rom battery seems fine. Thanks.
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I hate the battery life on this phone, it ****ing sucks no matter what you do and idk why
iguate12345 said:
I don't know if this is common but no matter what rom I flash I get horrible battery life. I always do a clean wipe, full wipe whatever you want to call it, phone lasts maybe 6 hours of usage. Also device sometimes gets very hot, rooted use twrp 2.8.5.0 and am on the latest firmware any ideas? When I use the stock rom battery seems fine. Thanks.
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Something is likely holding your phone awake for long periods of time. Impossible to know with the lack of information you've provided. Check out this thread here (It's in the Nexus 5 forums, but it's relevant for all phones) on how and what to post to analyze your battery: http://forum.xda-developers.com/google-nexus-5/help/battery-life-help-troubleshoot-battery-t2785128
Impossible help without knowing what your running, ROM, apps, settings , etc. Start off by installing wakeloc detector and go from there.
so?
what is the best custom rom and kernel for the best battery life?

battery draning at idle

my phone battery is draining at idle . like i left my phone at 49 percent at night when i woke up cheak it was 29% i thot that is an battery issue so yesterday i replace my old battery with new one bt results are same please jelp me out or tell me which rom should i use to fix this
I will suggest Ressurection remix rom
Ressurection remix with latest 7.1 also have huge battery drain problem, dont use if you need long battery.
Same thing with me
please help.me guys
besides stock EUI rom, AOKP MM has the best battery life and stability. only downside is bluetooth audio does not work. im testing out MIUI 8 but battery does not seem that good.
el_venga said:
besides stock EUI rom, AOKP MM has the best battery life and stability. only downside is bluetooth audio does not work. im testing out MIUI 8 but battery does not seem that good.
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i just want that my phone battery wont drain at idle please help me if there is a custom kernel or sumthnf
cjcool_123 said:
i just want that my phone battery wont drain at idle please help me if there is a custom kernel or sumthnf
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My Le1S displays the same erratic battery behaviour...It all started after the 19s update...Don't know whether it was a coincidence and if I have a software or hardware issue...Battery charged to 100% - would then drop to 40% within a few hours - then jump to 20% in another 1 hour - and then would start discharging at the rate of 1% every second and finally shut down...I tried every battery calibration method mentioned on this forum; did a factory reset numerous times; nothing helped...
For long, I've been thinking of downgrading to EUI 14s using one of the links in the Leeco forum...Am even thinking of flashing the 23s chinese version another link...
This was a beautiful when I had bought it...Not sure why things took such a downturn that now it has become a nightmare...I literally have to keep it connected to a charger most of the time...Pls let me know if you find a solution for this issue and if a battery change helps you...If nothing works, I am planning to move to the Redmi Note 4 soon...
The issues come from the source used i believe. Every nougat rom has battery drain. Every non-EUI based marshmallow rom has bt audio issue. Don't know issues with lollipop ones. EUI roms i have used all have this notifications issue, sometimes phone wont receive any even if every battery saving feature is disabled.
Best marshmallow roms for those who don't care about Bluetooth audio, AOKP and AICP. I would gladly go back to EUI, even miui or flyme, without those notifications and Bluetooth issues.
Use the CM 13 ROM (either LOS 13 from the xda forum or the cm 13 by bule from bbs.ydss.cn) which gives the best standby time even with all apps running in the night the battery drain is about 1 to 3% all night. I use the eui 26s rom which battery backup is also good I have no issue like you mentioned.

Battery drain on every Custom ROM

Hi there,
I wanted to switch to Custom ROM from Oxygen OS, so I downloaded RR first. Installed, all went smooth, went to bed with phone charged to 100%. Woke up, 66%. Jeez.
Then I switched to crDroid, same issue, LineageOS, same issue. I'm thinking it's the Ambient Display option since I really wanted to use this, however, this battery drain in standby is killing me. Is it really this unoptimized, or am I doing something wrong?
FYI, before this, last time I had touch with Custom ROMs and root was 7 years ago when I owned Galaxy S3, so I'm not sure what's going on here.
Thanks
This is a common issue with custom roms. If you are rooted, you can try underclocking, thus saving battery. Or you can use apps like tasker to toggle unnecessary battery draining features. It's always a give and take. If that's your daily driver, it's better to have the official rom.

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