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Nexus 7 dying at 25% battery

Without fail my Nexus 7 seems to die around 25% battery. Strangely, this only happened after I unlocked/rooted it, but now it happens every time. I even charged to full, used CWM to wipe battery stats and let it run down from there, still no dice.
Safe to say I should get a replacement?

No? I'd be surprised if I'm the only one having this problem... Seems like the Nexus 7's hardware issues are pretty widespread.

I must admit, when it died, I dont know what % the battery was at.

omnikai said:
No? I'd be surprised if I'm the only one having this problem... Seems like the Nexus 7's hardware issues are pretty widespread.
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Since youve rooted it, your warranty may be void, assuming that it wont be have you tried a custom rom? as daft as it sounds i had this issue on my old HTC desire, but a custom rom did fix this.
I havent had any issues at all with my nexus 7, my nexus was down to 8% last night when i plugged it in to charge before bed.
Aslo i wouldnt assume there are "wide spread" issues with the nexus7, for every device ever made there are always numerous threads about faults and the odd pixel being missing, people like to come onto the internet to broadcast there views when they feel they have been slighted or wronged in someway, if there was any "widespread issues with the nexus" (such as apples antenagate issue with the iphone 4) then it would be everywhere over ever tech blog.

Jjust reflash a different Rom
》》》Samsung Galaxy S3《《《

Been down as low as 2% before relenting and letting the poor thing power up. Rooted and on jr5.

Thanks for the feedback all, perhaps I'll try un-rooting it while at 100% battery and see if it fully discharges. Perhaps it's just sensitive about the battery capacity when it changes ROMs/Bootloader status.

My Nexus 7 is doing the same thing at 20%. What happened to yours?

Have you tried a factory reset? That's fixed similar problems on other devices.

Factory reset yes, but not at 100% charge.

Mine dies at/or around 30% - I'm stock+not rooted.

Factory reset it. It doesn't matter what the charge percentage is. I did it to mine and it's working fine

clear your batter stats in CWM, full charge, full discharge, full charge

davidcampbell said:
clear your batter stats in CWM, full charge, full discharge, full charge
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I tried this and it didn't work for me. The only thing that did was a factory reset by flashing the stock image through the root manager tool.

A user named NeoMagus has received two units with this issue, but I haven't seen many people mention it otherwise.
http://forum.xda-developers.com/showthread.php?p=30787728#post30787728
I'm new to tablets but I returned a Fire with the same problem. I assume it's a freak battery thing and not something innate to this device.

Yup my first C6 and last C7 also had this problem. Charged/Decharged fine for about a week, then just started turning off at about 19-20%. The screen would also display in very small text "show low low battery logo". Re-flashing stock, wiping, calibrating by deleting batterystats.bin, nothing helped, always died at 20%. Just ended up exchanging both so don't know what to tell you guys, everyone else seems to be fine so my only conclusion is bunk battery

omnikai said:
Without fail my Nexus 7 seems to die around 25% battery. Strangely, this only happened after I unlocked/rooted it, but now it happens every time. I even charged to full, used CWM to wipe battery stats and let it run down from there, still no dice.
Safe to say I should get a replacement?
Click to expand...
Click to collapse
Flash back stock ROM, lock boot loader and see if it fix. At this point, you got back your warranty and can ask for replacement
Sent from my Nexus 7 using Tapatalk 2

I have the same issue on mine, which is stock/unrooted. I just did a factory reset and it's been okay so far, but it's a little early to tell if it really worked.
**UPDATE** - Doing a factory reset did not fix the issue. It died again after some more use. I'm going to return it to Google.
**UPDATE 2** - After connecting the device to the charger and powering it on again it reported 0% battery. I charged it back up to 100% and I've currently run it back down to 7%. I'm not sure how or why it's working now, but it does seem to be a problem with the software misreporting the remaining battery life.

Mine shut down at 9% last night. Not that bad but not ideal I think it should go to 2-4% or 'go down with the ship' at 0% like my phone does.
Oh well I'm going to get a replacement after my next trip due to audio and touchscreen issues, I've been putting it off in hopes that they iron it out but I can't wait much longer a dead left headphone and random zooming when I scroll is a drag.

Same here ,last week my N7 died at 15% battery
but now at 20% ..
no Low battery Logo show
Should i do Factory Reset ???

Sudden drop in battery performance on my Nexus 6P(no rogue 3rd party apps).

Hello everyone!
So I have been having these battery issues since April security patch. the phone gets really warm to the touch even by doing the simplest of things like browsing and watching youtube. Android OS keeps the phone awake 80% of the time and I am only getting 2-3 hours of use throughout the day. Restored the phone to factory settings(fresh start, nothing restored) three days ago and still the same issue. Android OS drains the battery life even though I made sure that only google apps are installed on the phone.
But today things got even weirder. I disabled Google Now and location services as a test and the battery drain and heat issues were gone temporarily. I was getting a great battery performance from morning to afternoon. I check my battery stats and I notice that Google services mysteriously drained 17% of my battery life and that it's been running for 21 days straight? That's impossible since I just did a fresh reset to the phone three days ago. I rebooted the phone and that "Google services" drain changed to WiFi instead?! That's crazy!
I contacted Google store support team and they have been really helpful so far. They offered to replace the phone with a refurbished unit, but I don't think I am ready to give up on this phone just yet.
Thank you!

waelalzubieri said:
Hello everyone!
So I have been having these battery issues since April security patch. the phone gets really warm to the touch even by doing the simplest of things like browsing and watching youtube. Android OS keeps the phone awake 80% of the time and I am only getting 2-3 hours of use throughout the day. Restored the phone to factory settings(fresh start, nothing restored) three days ago and still the same issue. Android OS drains the battery life even though I made sure that only google apps are installed on the phone.
But today things got even weirder. I disabled Google Now and location services as a test and the battery drain and heat issues were gone temporarily. I was getting a great battery performance from morning to afternoon. I check my battery stats and I notice that Google services mysteriously drained 17% of my battery life and that it's been running for 21 days straight? That's impossible since I just did a fresh reset to the phone three days ago. I rebooted the phone and that "Google services" drain changed to WiFi instead?! That's crazy!
I contacted Google store support team and they have been really helpful so far. They offered to replace the phone with a refurbished unit, but I don't think I am ready to give up on this phone just yet.
Thank you!
Click to expand...
Click to collapse
I hate to recommend this, but sometimes things go out of wack after a SW update, so a hard reset would probably be needed. I would try that (just start from zero) before jumping into a refurbished phone that might have some other kind of issues. Have you tried a hard reset yet? I see that you did a fresh reset. Did you go through the recovery though? Not just the regular UI. I think it's better to clear cache, and every thing through the recovery (custom or stock).

en28so said:
I hate to recommend this, but sometimes things go out of wack after a SW update, so a hard reset would probably be needed. I would try that (just start from zero) before jumping into a refurbished phone that might have some other kind of issues. Have you tried a hard reset yet? I see that you did a fresh reset. Did you go through the recovery though? Not just the regular UI. I think it's better to clear cache, and every thing through the recovery (custom or stock).
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Click to collapse
I did it through recovery. I have cleared the cache and rebooted the phone several times the past few days. Nothing seems to help at all.

Turn off your google backup.
Sent from my Nexus 6 using Tapatalk

waelalzubieri said:
I did it through recovery. I have cleared the cache and rebooted the phone several times the past few days. Nothing seems to help at all.
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Click to collapse
Wow. Maybe a custom ROM might help? Have you tried that? That's the last thing I would do. Good luck!

Not recommended but I just flashed January vendor and ROM and that has helped my battery life. I. Believe it is the security updates that kill our battery.

shawn1482 said:
Not recommended but I just flashed January vendor and ROM and that has helped my battery life. I. Believe it is the security updates that kill our battery.
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Click to collapse
Is it a widespread issue? Like I said in my post, I saw the decline ever since I got the April security update. The May patch actually managed to make things worse. There seems to be something hidden in the OS that it's draining the battery and causing the awake issues. I haven't tried rooting the device because I lack the experience to do so. I will probably look into it on these forums, but at this point I have tried everything.
Disabling Google now helped a lot and it exposed some sort of a glitch with the stock battery monitoring app. I am not sure if it's hardware or software, but it's certainly not normal. I am tempted to just replace it, but I am afraid that this issue will just plague the new one from Google. I am really disappointed How Google handles updates on this device. I always thought that stock android is most stable version of android, but the software on my old Xperia Z is actually more stable than this. It never had battery drain issues and standby battery life was always great. The battery life on Nexus 6P is actually worse than the Xperia Z even though that phone is 3 years old.

waelalzubieri said:
Is it a widespread issue? Like I said in my post, I saw the decline ever since I got the April security update. The May patch actually managed to make things worse. There seems to be something hidden in the OS that it's draining the battery and causing the awake issues. I haven't tried rooting the device because I lack the experience to do so. I will probably look into it on these forums, but at this point I have tried everything.
Disabling Google now helped a lot and it exposed some sort of a glitch with the stock battery monitoring app. I am not sure if it's hardware or software, but it's certainly not normal. I am tempted to just replace it, but I am afraid that this issue will just plague the new one from Google. I am really disappointed How Google handles updates on this device. I always thought that stock android is most stable version of android, but the software on my old Xperia Z is actually more stable than this. It never had battery drain issues and standby battery life was always great. The battery life on Nexus 6P is actually worse than the Xperia Z even though that phone is 3 years old.
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I've seen a lot of posts over the months with people having the same problem we are. I came from a mid range LG stylo with a snapdragon 610. I would have 8 hours screen on time daily. Its sad that goggle cant get the same out of their own hardware. Also I have seen that the Note 5 and S7 Edge both get better battery life as opposed to our stock phones. For as much as people praise stock and look down on Touchwiz, they are doing something right over there.

But it doesn't affect everyone and that what puzzles me. Only certain phones are hit by these issues, while other people are getting excellent battery life. I have seen plenty of people post screenshots of 6 hours+ of on screen time. I am lucky to get 3 hours. I think Google should really invest in creating a better power management system into Android. Companies like Sony and Samsung built their own and the battery life on their devices always perform predictably relative to what I am seeing on this phone. I have never witnessed The doze feature kick in since I have bought this phone. Sony had stamina mode since 2013 and it actually worked.

waelalzubieri said:
But it doesn't affect everyone and that what puzzles me. Only certain phones are hit by these issues, while other people are getting excellent battery life. I have seen plenty of people post screenshots of 6 hours+ of on screen time. I am lucky to get 3 hours. I think Google should really invest in creating a better power management system into Android. Companies like Sony and Samsung built their own and the battery life on their devices always perform predictably relative to what I am seeing on this phone. I have never witnessed The doze feature kick in since I have bought this phone. Sony had stamina mode since 2013 and it actually worked.
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Click to collapse
Most of those people posting those outrageous number root and do kernel tweaks. I've gotten at most 6 hours SOT on stock without root. You are right our phones do all react differently to certain circumstances. I don't know if it's feasible to you ,but you should try rooting and trying out a few Roms some help others don't. If you aren't into Roms and decide to root try earlier vendors and stock roms and see it those work. I'm not an expert by any means just my suggestions.

shawn1482 said:
Most of those people posting those outrageous number root and do kernel tweaks. I've gotten at most 6 hours SOT on stock without root. You are right our phones do all react differently to certain circumstances. I don't know if it's feasible to you ,but you should try rooting and trying out a few Roms some help others don't. If you aren't into Roms and decide to root try earlier vendors and stock roms and see it those work. I'm not an expert by any means just my suggestions.
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Click to collapse
Well, the fact that you are having great battery life proves my point. It's either that the quality control of the batteries used on these phones are terrible, or that the software or kernel are corrupted from factory causing these issues. There is no way to fix them by hard reseting the phone so far. I am going to try to flash a stock rom on this device and see what happens. Thanks by the way.

1) Are you rooted? If not, at least do that and install BBS in order to track down what's eating your battery.
2) Probably we'll run into a common problem / bug the last two months.
After unplugging the phone, it seems that the wakelock *backup* runs constantly, does not let phone get into sleep, and runs in the background while using your phone causin battery to drain faster.
3) About battery life. Comparing battery results between two users it has no point, unless you really now his usage pattern. Not only the setup, but which apps of them used most etc.
For example Facebook app is real battery eater. I've seen an hour more SOT without this app.
I can give several examples like this.
Sent from my Nexus 6P using Tapatalk

Battery life issues

I'm on the T-Mobile variant. My battery was amazing the first few days lasting anywhere from 6.6-7.5 hours of SOT. Now Im avereging 5-6 hours of SOT. A lot of Android OS and Android system drainage. I'm not rooted neither. Anyone else?

Did you take the 10i update?

Zacharee1 said:
Did you take the 10i update?
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Haven't received it yet. I checked yesterday for updates and nothing popped up. Did you get one?

This is what I have so far

I'm rooted so I'm on 10d for now.
I was hoping you had taken it, because that would've explained the battery. Honestly, though, even 5-6 hours seems like a ton. Maybe you installed something new? I'd recommend GSam, but that doesn't work on Nougat without root.

Screen time, depends on what your doing, and what your connection speed is.
Maybe Google featured apps? Also you may be doing things you weren't doing before on the phone.
Its hard to tell, I wouldn't say you have a drain issue based on previous screen time.
Now if you said, I was getting 6.5 before and now only getting 3 hours, than I'd say there's an issue.

Not sure if it applies. But I noticed some greater than usual battery drain right before my external speaker became all distorted. Since then I've noticed a marked decrease in battery especially standby. Hopefully that will change once I send it in and get it fixed.

Dreaded Battery Issue

So, my phone the past couple months has started turning off at 25 percent battery life left. Battery is also draining faster than normal. Reading up this is a major issue on a lot of 6ps. Some say replacing the battery fixed it, some say it didn't. Some say that calibrating the battery fixes it, same say it doesnt. Some say that factory reset fixes it, some says it doesnt. I have also tried all of these with no luckI have a replacement phone coming from Google but some say the replacement has the same issue. Some are saying it is not a software issue, some are saying it is.
.Is there anything else I can try?

techbeck said:
So, my phone the past couple months has started turning off at 25 percent battery life left. Battery is also draining faster than normal. Reading up this is a major issue on a lot of 6ps. Some say replacing the battery fixed it, some say it didn't. Some say that calibrating the battery fixes it, same say it doesnt. Some say that factory reset fixes it, some says it doesnt. I have also tried all of these with no luckI have a replacement phone coming from Google but some say the replacement has the same issue. Some are saying it is not a software issue, some are saying it is.
.Is there anything else I can try?
Click to expand...
Click to collapse
Try flashing a custom rom&kernel, I doubt it will totally fix it, but it might at least help.

I got a replacement on order. I did a factory reset/complete wipe yesterday and so far, appears to be much better. Phone is snappier and things like Smart Lock popped up when it didnt before. Also, my alarm I used to only have to press the onscreen icon to silence it, not I have to slide to silence. So things are a little different (same OS version) so I am curious if things were just screwed up. I have not done a complete wipe since I got my phone about 2yrs ago. Time will tell tho and I have not run down my phone below 25 yet to see if that is still happening. But like I said, I got a replacement coming.

It's the battery. You need to replace it. Not a pleasant or easy thing to do with the way the Nexus 6P is constructed, but not impossible either. Do it, and it will work like the day it rolled off the Chinese factory floor.

rajendra82 said:
It's the battery. You need to replace it. Not a pleasant or easy thing to do with the way the Nexus 6P is constructed, but not impossible either. Do it, and it will work like the day it rolled off the Chinese factory floor.
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Google replaced it out of warranty so I went that route. I saw vids about changing the battery, but this worked better. And the new phone addressed my issue.

Where's my battery going?! (Phone won't sleep?!)

HELP!!!
I picked up an H918 for my wife to use on T-mobile USA. Since it was used, I also got one of the extended life 4100Mah batteries to hopefully make it last at least the entire day without topping off the charge. She usually averages around 4 - 5 hour SOT, so this seemed like a good option from what I've read, and fits in the original door so I can use the wallet case she wants with it.
But man, her battery life is TERRIBLE! I checked with Accubattery, and it reports that the battery is charging within 99% of it's 4100mah spec, so I don't think its a bad battery. Yet, she can barely go 12 hours with just under 2 hours SOT before the phone dies!
She is unrooted, running stock Oreo.
I installed GSam Battery Monitor and used their ADB commands to give it permission to record deep statistics w/out root (pretty cool, never did that before). I ran it for a little while this morning. Within 3 hours 40 minutes off the charger, she was already down to 72% with barely any SOT. I'm attaching screenshots of the app usage and doze screen (sorry for the phone-snapped-of-phone picture, it's my wifes phone like I said, so it was easier to just snap with my camera than take a screenshot and send it to myself to post).
Maybe I'm not reading this right, but it seems like something is keeping her phone from sleeping. A big culprit seems to be call services, and in my location settings, I noticed it mention that LG IMS was doing a lot of heavy battery drain with location related inquiries.
I thought maybe it was related to WiFi calling, so I turned that off. Cell reception is average.
2 hours later, she's down to 50% so that wasn't it. I don't know what else to try other than hard reset, but we literally just got this and set it up 2 days ago, and its been like this from day one. I don't see why it would be any different the second time around.

It's likely a junk battery. It's really hard to get a good oem replacement battery.
If you shop Amazon look for a Taeozi 4200 or Shemnz 4200. They both have 2 year warranty and decent reviews here on XDA
The Perfine 4100 is also highly recommend
Any Li-polymer should be better
Sent from my ONEPLUS A6010 using Tapatalk

When I bought my wife's phone it had a battery drain/overheat and wakelock issue as well. I fixed it and haven't had an issue since. Here's what I did to fix it:
https://forum.xda-developers.com/v20/help/absolutely-terrible-battery-life-t3531456/post78654160

clsA said:
It's likely a junk battery. It's really hard to get a good oem replacement battery.
If you shop Amazon look for a Taeozi 4200 or Shemnz 4200. They both have 2 year warranty and decent reviews here on XDA
The Perfine 4100 is also highly recommend
Any Li-polymer should be better
Sent from my ONEPLUS A6010 using Tapatalk
Click to expand...
Click to collapse
I did my homework first and got the Perfine from Amazon, not a no-name junk battery. When I couldn't fit it without removing the sticker, the seller was really helpful and actually offered to replace it after checking first that it fit in *THEIR* V20 at the factory. Really solid customer support. And according to Accubattery, it really is the capacity it says. Or at least within 99% of it (I think it estimated 4080 or something like that). So I don't think that's the issue.
pistacios said:
When I bought my wife's phone it had a battery drain/overheat and wakelock issue as well. I fixed it and haven't had an issue since. Here's what I did to fix it:
https://forum.xda-developers.com/v20/help/absolutely-terrible-battery-life-t3531456/post78654160
Click to expand...
Click to collapse
That's actually really interesting- I did take apart the phone to do the thermal mod thing (wiped off the dried up pink gunk and put a thermal pad there), but it seemed pretty clean otherwise inside when I did. How on earth did you figure out that was the problem?
After speaking with some folks on Telegram, Reddit, and other corners of the internet, I have a different theory. A bunch of people told me to let the rom "settle", that battery life is never good after a fresh format or new rom flash. Honestly, the critical thinker in me says that sounds like nonsense. I've never heard of this before and I've been flashing roms for the better half of a decade. I'd think after it takes the time the load up your apps and settings and configure itself, it would be done. But I Googled it, and it seems to be a hotly debated subject.
Those that swear by it claim that whenever you start fresh or flash a new rom, it takes anywhere from one to a few battery cycles before the kernel calms down. Perhaps it is doing some sort of internal calibration based on your battery life and system demands or something like that. The theory seems to be that the Kernel doesn't allow the CPU to fully doze until it is done with this process, which sometimes takes days. I don't know, but the more I read about it, the more it sort of started sound plausible. When I got the phone, I tried out some things on it myself without a SIM card first, just to make sure everything on it checked out before giving it to the wife. Then, I did a hard reset, popped in her SIM card and let it do its thing. That's when we realized battery life was pretty terrible, as after 10-12 hours she already needed to charge... and this was on the 4100mah perfine!
I tried another hard reset, and when that didn't fix it, I decided it was time to root and see if I could get to the bottom of the bad battery. It seemed the kernel was where a lot of it currently went according to battery stat apps. After downgrading my H918 to Nougat so I could install TWRP, I promptly flashed Alpha Omega Oreo 20H and restored her apps. Turns out the next morning we couldn't sync her smartwatch, somehow we broke bluetooth (going into BT settings would crash the phone everytime). So weird, and while we were at it the battery life still wasn't great. So I did a hard reset that evening and found that even with nothing installed, BT was borked. (looking back at it, I think I should have flashed an Oreo rom like the stock 20H rooted first, and THEN the AO rom. I think going straight from nougat might have led to a driver mismatch or something)
Anyway, after that didn't work I flashed the stock rooted 20H rom, and lo and behold bluetooth and everything else is working again! But the battery has been bad all along and is still doing its generally suckiness thing.
BUT... as someone pointed out, if this kernel settle thing is real, I've been pretty much flashing and resetting this thing every other day. If roms need to "settle" first (still a debatable subject), than I never really gave it a chance yet and that's why I'm constantly seeing battery drain from things like Kernel even on different roms! And @pistacios, is it possible that you were having a kernel do the same thing since it was just reset and it just so happened to be that when it calibrated itself you thought you had fixed it by cleaning out the USB port?
All I know is I'm going to give this a couple of days before deciding on a plan B. Seems too simple to be the reason, but hey- I'm desperate.

Dishe said:
I did my homework first and got the Perfine from Amazon, not a no-name junk battery. When I couldn't fit it without removing the sticker, the seller was really helpful and actually offered to replace it after checking first that it fit in *THEIR* V20 at the factory. Really solid customer support. And according to Accubattery, it really is the capacity it says. Or at least within 99% of it (I think it estimated 4080 or something like that). So I don't think that's the issue.
That's actually really interesting- I did take apart the phone to do the thermal mod thing (wiped off the dried up pink gunk and put a thermal pad there), but it seemed pretty clean otherwise inside when I did. How on earth did you figure out that was the problem?
After speaking with some folks on Telegram, Reddit, and other corners of the internet, I have a different theory. A bunch of people told me to let the rom "settle", that battery life is never good after a fresh format or new rom flash. Honestly, the critical thinker in me says that sounds like nonsense. I've never heard of this before and I've been flashing roms for the better half of a decade. I'd think after it takes the time the load up your apps and settings and configure itself, it would be done. But I Googled it, and it seems to be a hotly debated subject.
Those that swear by it claim that whenever you start fresh or flash a new rom, it takes anywhere from one to a few battery cycles before the kernel calms down. Perhaps it is doing some sort of internal calibration based on your battery life and system demands or something like that. The theory seems to be that the Kernel doesn't allow the CPU to fully doze until it is done with this process, which sometimes takes days. I don't know, but the more I read about it, the more it sort of started sound plausible. When I got the phone, I tried out some things on it myself without a SIM card first, just to make sure everything on it checked out before giving it to the wife. Then, I did a hard reset, popped in her SIM card and let it do its thing. That's when we realized battery life was pretty terrible, as after 10-12 hours she already needed to charge... and this was on the 4100mah perfine!
I tried another hard reset, and when that didn't fix it, I decided it was time to root and see if I could get to the bottom of the bad battery. It seemed the kernel was where a lot of it currently went according to battery stat apps. After downgrading my H918 to Nougat so I could install TWRP, I promptly flashed Alpha Omega Oreo 20H and restored her apps. Turns out the next morning we couldn't sync her smartwatch, somehow we broke bluetooth (going into BT settings would crash the phone everytime). So weird, and while we were at it the battery life still wasn't great. So I did a hard reset that evening and found that even with nothing installed, BT was borked. (looking back at it, I think I should have flashed an Oreo rom like the stock 20H rooted first, and THEN the AO rom. I think going straight from nougat might have led to a driver mismatch or something)
Anyway, after that didn't work I flashed the stock rooted 20H rom, and lo and behold bluetooth and everything else is working again! But the battery has been bad all along and is still doing its generally suckiness thing.
BUT... as someone pointed out, if this kernel settle thing is real, I've been pretty much flashing and resetting this thing every other day. If roms need to "settle" first (still a debatable subject), than I never really gave it a chance yet and that's why I'm constantly seeing battery drain from things like Kernel even on different roms! And @pistacios, is it possible that you were having a kernel do the same thing since it was just reset and it just so happened to be that when it calibrated itself you thought you had fixed it by cleaning out the USB port?
All I know is I'm going to give this a couple of days before deciding on a plan B. Seems too simple to be the reason, but hey- I'm desperate.
Click to expand...
Click to collapse
Ive experienced ROMs settling in and battery stabilizing after a few days. But this was pretty far back with the HTC M7 and M8. Most modern phone's I've flashed pretty well settled in within the first few hours. The battery life on this phone was never amazing. It was good to just Ok for most when it was new.
If you flashed the stock rooted rom and still had bad battery life, I still suspect the battery itself. I still recommend one of the battery I listed earlier. If the perfine didn't work out try a different one.
Sent from my ONEPLUS A6010 using Tapatalk

clsA said:
Ive experienced ROMs settling in and battery stabilizing after a few days. But this was pretty far back with the HTC M7 and M8. Most modern phone's I've flashed pretty well settled in within the first few hours. The battery life on this phone was never amazing. It was good to just Ok for most when it was new.
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Click to collapse
Right, with the stock 3200mah battery. With the Perfine 4100, a lot of reports are saying 6-7 hours SOT or at least a full day of regular use. That's good enough, really. Mine is dying at half of that. I'm wondering if I have faulty hardware. I could put the stock battery back in and see if it dies much sooner.
I'm actually wondering if someone can check their mA use per hour with the screen on vs off, and I can see if the numbers make sense on mine. Accubattery is pretty good at the math.

Dishe said:
.....
And @pistacios, is it possible that you were having a kernel do the same thing since it was just reset and it just so happened to be that when it calibrated itself you thought you had fixed it by cleaning out the USB port?
....,
Click to expand...
Click to collapse
Phone was up and running for 2 weeks, so it wasn't due to fresh reset.
GSAM battery monitor showed kennel wakelock, something about USB OTG in the top of the list, so I figured the port was my first check for a problem, and it was. It wasn't obvious that there was dirt or foreign matter in there, because it looked clean. But sure enough, after the light brushing with 94% alcohol, the problem disappeared.
I'm not saying this is definitely your problem, just throwing it out there.