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[Q] Odd battery spikes adding to battery hell

I've been having general horrible battery problems with my Sensation on stock Sense and Miui.us. I just installed HyperSensation and Faux 0.2.3 kernel with a full wipe and reset the battery calibration thinger.
First 2 charge/drain cycles were yesterday (got around 5.5 hours as has been normal for the last 2 weeks) and after the second drain to 1% I plugged in AC and went to bed. This morning I checked Battery Monitor (not the Beta or paid, so I'm aware the mA reading may be incorrect/offset on Sensation).
The graph overnight shows some odd spikes every 50 minutes draining the battery. This is the first night I've been looking at my graphs so I'm not sure if this is regular or a separate issue from my normal battery hell.
I've included a screenshot of everything I could think of including Battery Monitor and SetCPU profiles. Re running apps, some I've never run before, the only other one on the 2nd page was Thumb Keyboard.
I would really appreciate some ideas on my battery life in general, and what this issue is in particular.
Background:
- Horrible battery problems with my Sensation on stock Sense, Miui.us and now with HyperSensation ROM-CM7.1 with kernel faux123v0.2.3r.
- Been getting around 5-6 hours with normal use, no 3G, no wifi, no GPS, no Bluetooth, low screen brightness, etc etc.
- I also uninstalled Gallery as I was getting the sensor usage issue which I thought may be causing my battery woes, but no dice yet.
- I prefer to keep data on at all times (2G) as that's what I use my phone for, so I don't use this Juice Defender function.
Thanks,
P7

P7uen said:
I've been having general horrible battery problems with my Sensation on stock Sense and Miui.us. I just installed HyperSensation and Faux 0.2.3 kernel with a full wipe and reset the battery calibration thinger.
First 2 charge/drain cycles were yesterday (got around 5.5 hours as has been normal for the last 2 weeks) and after the second drain to 1% I plugged in AC and went to bed. This morning I checked Battery Monitor (not the Beta or paid, so I'm aware the mA reading may be incorrect/offset on Sensation).
The graph overnight shows some odd spikes every 50 minutes draining the battery. This is the first night I've been looking at my graphs so I'm not sure if this is regular or a separate issue from my normal battery hell.
I've included a screenshot of everything I could think of including Battery Monitor and SetCPU profiles. Re running apps, some I've never run before, the only other one on the 2nd page was Thumb Keyboard.
I would really appreciate some ideas on my battery life in general, and what this issue is in particular.
Background:
- Horrible battery problems with my Sensation on stock Sense, Miui.us and now with HyperSensation ROM-CM7.1 with kernel faux123v0.2.3r.
- Been getting around 5-6 hours with normal use, no 3G, no wifi, no GPS, no Bluetooth, low screen brightness, etc etc.
- I also uninstalled Gallery as I was getting the sensor usage issue which I thought may be causing my battery woes, but no dice yet.
- I prefer to keep data on at all times (2G) as that's what I use my phone for, so I don't use this Juice Defender function.
Thanks,
P7
Click to expand...
Click to collapse
How did you calibrate your battery? Did you..
Flash Rom
Kill battery to 0%
Charge fully 100% then wipe battery stats? Or did you wipe battery stats as you flashed? Thy could be a major problem
Also you have CPU your max set to 1.56ghz when its charged. That could cause the peak in usage. Especially if you have it set to performance and not ondemand. Those are the only two things that's really stand out to me.
Also check the arhd thread. In one of the last pages (depending on when you get this) there is a link for a fix on battery drain on fauxs latest kernel. Check it out

Thanks rddocke, I will check out the kernel fix. I did wipe, flash rom and reset the battery stats at the same time. I will definitely try your method, I didn't realise I had it upside-down.
As for the spikes, they seem to be continuing today, I can post screenshots later. Given that the major battery user is "Adnroid System", would this narrow my issue down to the built in apps?
On the plus side, with the new setup today on my 3rd battery cycle, I am getting better battery life than before aside from the spikes.

ya the spikes could be do to an auto update, maybe background sync... any things could cause it as long as it isnt a constant high usage i wouldnt worry about it. but if you want to help your situation i would set back my cpu max to 19200 when charging, and clock back to 1.2 for daily use, switch your goveners to ondemand and get them off performance.
basically whatever its doing at those times its running at the highest point your cpu can handle. adjusting wont solve your problem but it will reduce the amount of battery it uses
idk its hard to tell android system is always going to be the juicer, that and sense. nonsense for arhd could help you out too. i particularly like sense tho
hope i helped

rddocke said:
ya the spikes could be do to an auto update, maybe background sync... any things could cause it as long as it isnt a constant high usage i wouldnt worry about it. but if you want to help your situation i would set back my cpu max to 19200 when charging, and clock back to 1.2 for daily use, switch your goveners to ondemand and get them off performance.
basically whatever its doing at those times its running at the highest point your cpu can handle. adjusting wont solve your problem but it will reduce the amount of battery it uses
idk its hard to tell android system is always going to be the juicer, that and sense. nonsense for arhd could help you out too. i particularly like sense tho
hope i helped
Click to expand...
Click to collapse
I'll change these settings as well, great. I feel like I'm getting somewhere gradually, been spinning my wheels for a week on this.
I can't 'thank' you for some reason, but my buddy should have just done it, which is fair since I can finally pester him less about my battery problems and pester other XDA members instead!

No problem buddy glad I could give you some help. Let me know what you discover from all that. Another tip I could give is maybe test out a bricked kernel 1.4rs or 0.91 seem to be working best with sense 3.0 from what I've read

Need dev help trying to boost MIUI/HebMIUI battery life

Hi guys and gals (if exist)
I really love my HebMIUI ROM based on Erikmm's latest MIUI V4.
I injected it the latest Team Acid kernel and auto brightness mod and it seem to work flawlessly,
Problem is battery life is just not good enough to serve as a daily driver.
I intend to merge PIMP my ROM mod and DS's A.I when I have time, but I seem to miss something.
I'd be happy to get suggestions.
Here are some XDA version Better Battery Stats raw data snaps : (10x!)

Idk but actually, when I told u my battery was not good and I meant it just could last for a day lol...and I have never used it for more than a day w/o a charge even on GB so i dont think its bad...anw, just try all things u think its good cause its hard to say anything bout tweaks and battery life I think cause...IMO and from what I have been through, scripts and build.prop lines not really help much both performance or battery life...and even OC or UV
Sent from my SGH-T959V using xda premium

daothanhduy1996 said:
Idk but actually, when I told u my battery was not good and I meant it just could last for a day lol...and I have never used it for more than a day w/o a charge even on GB so i dont think its bad...anw, just try all things u think its good cause its hard to say anything bout tweaks and battery life I think cause...IMO and from what I have been through, scripts and build.prop lines not really help much both performance or battery life...and even OC or UV
Sent from my SGH-T959V using xda premium
Click to expand...
Click to collapse
I use cMiui 2.8.10.
so I don't know about HebMIUI but i use that rom around 20hr w/o charging.
This rom base on Hefe kernel 0.8(I think)
I tested Hefe 0.8.1 kernel but 0.8 is better than 0.8.1 battery life.
I use cMiui 2.8.10. I think cMiui and Miui is almost same.
I love this rom. I waiting UPDATE. ^^
You can try this and flash rom again.
http://forum.xda-developers.com/showthread.php?t=1500427

Hi Dao
I know what you mean..
we both are more than heavy users, not leaving the phone for a minute, so in that way, yes, even on Valhalla I barely made it through the day.
Here I get this issue even if I have no activity and that's what bugs me. Batt is draining no matter what the user does. That's why I shared this technical data presented in the pics.
Thanks MJMJ
I'm not looking for a replacement.
I love the original MIUI, tune and customize it and share it, here on xda, especially for Hebrew speakers, but not only.
Every ROM has his pros and cons. Cmiui is based on cm9 and miui is based on touchwiz. I prefer Miui as it is the original ROM and is generally considered more stable.
I might try Hefe kernel though.
I think problem is related to device awake status...
sent from me

That your phone is running quite a bit at 100 MHz when I might expect that it be in deep sleep caught my eye. I suspect something is keeping your phone from deep sleep. I can't tell from the BBS you have posted as I'm not sure what you were doing during the time it was collecting stats. I find the BBS from when I'm not touching my phone and it is running on battery overnight perhaps the most valuable.
As far as Hefe 0.8.0 vs. 0.8.1 on battery life, you've completely fooled yourself if you believe you are finding a difference. Go ahead and pull a source diff -- it all is about the interface to sysfs so that external apps can control the UV/OC, not the kernel operation.

jeffsf said:
That your phone is running quite a bit at 100 MHz when I might expect that it be in deep sleep caught my eye. I suspect something is keeping your phone from deep sleep. I can't tell from the BBS you have posted as I'm not sure what you were doing during the time it was collecting stats. I find the BBS from when I'm not touching my phone and it is running on battery overnight perhaps the most valuable.
As far as Hefe 0.8.0 vs. 0.8.1 on battery life, you've completely fooled yourself if you believe you are finding a difference. Go ahead and pull a source diff -- it all is about the interface to sysfs so that external apps can control the UV/OC, not the kernel operation.
Click to expand...
Click to collapse
I an not a professional. I'm just user of this forum.
I found this about battery life.
about WIFI I advanced setup Keep Wi-Fi during sleep -> Only when pluggged in.
use both of this hefe 0.8 and 0.8.1.
0.8 is wifi off when phone lock.
but 0.8.1 is not.
and battery life is different.
I write just my experience on my larrow professional konwledge.
I'm sorry I can not understand about source code,Interface and UV/OC.
Just experience.
Anyway I love cMiui and Hefe kernel.

Hi
I put WiFi as always on (even on sleep) because I wanted to get whatsapp and work mail in real time. Otherwise I didn't get them in time. Perhaps this is it. I will try it as on only when connected and report.
I would also try it with and without auto brightness mod. Let me know what data do you need.
sent from me

What follows is my opinion and it is not completely backed up by experimental evidence, so take it as you will.
I don't believe that any ROM or kernel can significantly improve battery life over any other "good" ROM or kernel. I do believe that there are ROMs and kernels out there than can significantly reduce battery life though.
In my opinion, the two biggest factors on battery life (past battery againg) are
How you use your phone
The applications you or the ROM have running
The most insight I have gained on battery life is running BetterBatteryStats on a "full" battery (unplugged) overnight, when I'm not interacting with the phone at all. As soon as you wake up, turn on the phone, go to BBS, and save a full log.
With a good ROM/kernel, I think you should be getting 90-95% "deep sleep" and no more than ~2% per hour (on a typical 1800-2300 mAh "advertised" capacity battery in good condition) drain. If you're not getting that, I'd look carefully at what is keeping your phone awake. If you have questions about interpreting the results, I know the BBS author and has a great thread where you can post your logs and get some feedback.
When the phone is running, it is my opinion that the screen consumes most of the current, assuming you're not a "gamer" or streaming music or other content. Running with dark themes in your apps (as you can), as well as keeping the brightness reasonably low (auto-brightness should help most users here), are good steps to take.
The GP2A light sensor reports 0.75 mA current consumption in Android, so I have a hard time believing that turning on auto-brightness is any worse that running at similar manual brightness levels. If the phone were to be able to run for 18 hours with the screen on (which we know it can't), it would be averaging ~100 mA -- the GP2A would account for less than 1% of that. Of course, that 0.75 mA may not be the correct number. I'm hoping to see if I can do some measurements on the screen drain at various brightness levels, as well as confirm that the GP2A draws minimal current itself. (Unfortunately, the I2C version of the light sensor used in the SGS4G and other phones does not seem to have a publicly available datasheet.)
I think that the way someone uses the phone has a significant impact, even day-over-day. I know that Hefe Kernel v0.8.0 and v0.8.1 have no meaningful differences in how power is managed. The report that one is noticeably different than the other says to me that day-to-day differences in how a phone is used, even when the owner thinks they are using it the same way, are perhaps more than may exepct.

Werd to your grandma!
Good post Jeff!

Good post Jeff.
Sometimes something as simple as playing a game and then switching to something else without the game exiting properly can do it. Once or twice a day on my PC, I'll go to my task manager and notice that IE or Chrome is still running despite my windows being closed. It's stuck in limbo. On a PC, it may suck up a bit of RAM or CPU cycles but if you have 6cores/8gb like me, you don't notice. Something like that on a phone can suck up battery life like a hog though.
Installing 1 badly coded app from the market can do it. Viewing webpages with more of a white background can affect battery life. There is a million things. It's like laptops. They may advertise 6hours battery life. Sure on the dimmest settings with the screen turned down and very few apps running. Stream and HD movie from Netflix and watch how that 6 hours turns into 2. lol.

Thnak you very much good informantion about battery life.
I understand what you say.
About my post.(I use cMiui and Hefe kernel 0.8)
WIFI I advanced setup Keep Wi-Fi during sleep -> Only when pluggged in.
I tested both of this hefe 0.8 and 0.8.1.
0.80 is wifi off when phone lock.
but 0.8.1 is not.
kernel version : 2.6.35.7-Hefe-ics-00044-g151987a and
2.6.35.7-Hefe-ics-00046-g83ec25b
Do I something worng?
I am not complain about your KERNEL or ROM.
I'm very glad you guys about good efect,time and everything for make good ROM and KERNEL.
Thanks again.

I don't think you did anything "wrong" at all!
The control of the WiFi is mainly a ROM thing. Android says "turn off the WiFi" and the kernel does it. I'm puzzled as to why you are seeing a difference. Since v0.8.0 and v0.8.1 are the same as far a WiFi goes, I suspect something else. Perhaps settings not "sticking" between flashes? If it happens again, logcat and dmesg might provide a clue as to why. If you do would you post in either the Hefe Kernel Q&A thread or the Q&A thread for your ROM?

Hi Jeff
Thanks for the detailed posts.
Did what you asked : got 96% after 7 hours of no use, no charge. Deep sleep is 98%.
So I come to conclusion that wifi is sucking up the battery on miui. It has very good reception and always shows full bars for all spots.
sent from me

itzik2sh said:
Hi Jeff
Thanks for the detailed posts.
Did what you asked : got 96% after 7 hours of no use, no charge. Deep sleep is 98%.
So I come to conclusion that wifi is sucking up the battery on miui. It has very good reception and always shows full bars for all spots.
sent from me
Click to expand...
Click to collapse
This is a mod that Erik put into his miui rom to attempt to fix the wifi "issue" on ics, the wifi signal is very strong (or maybe its just the wifi icon)
Sent from my SGH-T959V using xda app-developers app

Hi
I installed 'Better WiFi' (from the creators of BBS) and set it to open wifi connection only when screen is on and keep it if there is network activity.
Left it at night and dropped from 65% to 35%.
I'm now sure WiFi is over draining when opened.
sent from me

I haven't heard of that app before. My search-fu is failing me though, both here and in the Market. Where did you find it?
Edit: Found it http://forum.xda-developers.com/showthread.php?t=1801284
Posted from my SGS4G, thanks to Team Acid development

http://forum.xda-developers.com/showthread.php?t=1801284

[Q] weird battery issue

hello ppl,
I have this issue with my battery:
This afternoon my battery indicated 82%. the phone shut down and after a reboot it indicated around 27% battery left.
Later in the afternoon, after a reboot, I charged it for like 2 mins. it indicated 12%
I unplugged it and rebooted into recovery (4EXT) and it indicated 60% battery lvl.
I rebooted the ROM again and this indicated 34%
this event (reading 3 different battery lvls) took place in 1 minute, and the phone was not charger connected. It went from 12, to 60 and to 34%.
This really looks like a battery stats issue but what I can't help to wonder about is the following; do recovery and the ROM use different battery stats? this particular story sure gives that impression.
I plan to wipe battery stats after a full USB charge. U guys got any pointers I could consider? I have a stock batter for about 2 years now.
ROM: CM10.1 by Albinoman
Kernel: 3.0.67 ChronicBruce Linaro
Governor: ondemand
clockspeed: MIN 384 MAX 1728
I/O schedular: SIO
note: I did not experience any battery issue with this setup for at least 4 months prior to this problem, while using this setup.
attached a SS of the battery levels after reboot and shutdowns.

Seems like you're experiencing the same issues. The battery percentage was also way higher in recovery mode than Android showed me. Never noticed that before, so I'm not sure if that's normal, or both our phones / batteries are malfunctioning.

Wiping battery stats does nothing. 2 years is quite long for a battery, get an Anker?

onemanshow85 said:
hello ppl,
ROM: CM10.1 by Albinoman
Kernel: 3.0.67 ChronicBruce Linaro
Governor: ondemand
clockspeed: MIN 384 MAX 1728
I/O schedular: SIO
note: I did not experience any battery issue with this setup for at least 4 months prior to this problem, while using this setup.
attached a SS of the battery levels after reboot and shutdowns.
Click to expand...
Click to collapse
Before buying a new battery, did you attempt to flash a new ROM? becuase you seem to run a (very) old version of CM10.1 (I believe since March?), and although it's weird this popped up after four months, it is possible to be a problem in the ROM, especially with all the bugs fixed along the way. I believe updating the ROM should be the thing to do, before trying to change hardware parts (even battery), and if it won't work, you can always buy a battery (don't ofrget to back up your current ROM first).

astar26 said:
Before buying a new battery, did you attempt to flash a new ROM? becuase you seem to run a (very) old version of CM10.1 (I believe since March?), and although it's weird this popped up after four months, it is possible to be a problem in the ROM, especially with all the bugs fixed along the way. I believe updating the ROM should be the thing to do, before trying to change hardware parts (even battery), and if it won't work, you can always buy a battery (don't ofrget to back up your current ROM first).
Click to expand...
Click to collapse
I'm a mediocre XDA visitor and phone tweaker, so I didn't realize ROM's would get obsolete that quick (in my opinion). I will try to flash a updated CM, see if that works.

ok I updated my ROM. But there's no change in my batterie's behavior: shutdowns at high battery lvls and drops from enar full to near empty after the reboot.
I'm plannign to buy an Anker. but if anyone has some pointers that would be mint.
I already did the paper between battery trick.

Another update, today i noticed that the battery is a little bit swollen. The battery casing doesn't close properly anymore. When looking closely i notice the battery being slightly thicker. I don't trust it and don't use it anymore untill i got the anker

[Q] Best ROM, kernel and tweaks for Battery Life ?

Hello all !
I know it has been discussed many times, but nobody ever gave me a precise answer.
I usually get 12h max with ~3h of screen usage with my OPO. I'm using stock CM 11S with Franco Kernel right now.
What do you suggest me to do to at least be able to keep my phone alive during 24 hours with at least 5 hours of screen on ? It seems some people manage to get even better but this would be enough for me.
Thank you by advance

just do a clean reflash of cm11S xnph38R... with 4h30 hours of display, i do 4 days of battery..! (without any kernel)

Mayaku said:
Hello all !
I know it has been discussed many times, but nobody ever gave me a precise answer.
I usually get 12h max with ~3h of screen usage with my OPO. I'm using stock CM 11S with Franco Kernel right now.
What do you suggest me to do to at least be able to keep my phone alive during 24 hours with at least 5 hours of screen on ? It seems some people manage to get even better but this would be enough for me.
Thank you by advance
Click to expand...
Click to collapse
Couple of things first off you should ask here http://forum.xda-developers.com/oneplus-one/general/best-favorite-rom-kernel-roll-thread-t2886021
Secondly, I am confused why people ask for the best since the best in this case is subjective. Now there are threads upon threads you can read up on to see how to fix your battery life. Also what are you doing on your phone. I mean is wifi on all day are you in a bad signal area, is gps on, do you play game, is your brightness on full blast, do you use google now...
I can go on for days and days with this. YOU my friend YOU have to evaluate your phone and fix these things. WE here at xda can try and help but YOU yes YOU have to do the leg work and figure out do you have wakelocks. Its a lot my friend a lot....:cyclops:

Thanks for your answers I understand that fine tuning is not always required and that battery life depends on my usage... but seriously in my case, it gets worse and worse everyday :s I think I'm gonna try to fully go back to stock.
Do you have any general recommendation that works in every situation ? Like general advice about some settings that could help me win 2-3 hours ?

All roms and kernel are good. they all have their ups and downs.
i'm using stock 38r rooted and still can get 5h screen on time depending on usage.
u can try using greenify to sleep useless apps when not using them.
i used greenify to hibernate most of my social app.

For more battery life use Boeffla Linaro kernel (http://forum.xda-developers.com/one...nel-boeffla-kernel-linaro-sabermod-t2910357); It seems to be very smooth with low battery usage, but nobody can say if its stable. Since today I'm using sabermod build now, to be sure my UV is not too much . I use ZZMoove Optimal with 422mhz-1700mhz and Hotplug optimized, 422mhz because on the lowest value the music isn't playing smooth with one core online. I now have 28% left with 3h hours of screen time.
Edit: Anybody has 44S OTA?

Battery life is user dependent. I get 5 hours+ daily on lte and WiFi using stock and wifi. On wifi I get more. I recommend you check for rogue apps using betterbatterystats or wakelock detector. Do you use location services and such?

[Q] battery dropping significantly?

I've been using the latest ota 44s rooted, but with no modifications. its probably the most stable yet. no issues apart from this. despite the battery being actually quite good, i get 6+ sot within 40+ hours. but i'm getting an issue where according to the battery monitor, it drops a few percentages in one go without me actually using the device. its still on deep sleep. no wakelocks or anything like that.
Could it be that the battery stats is not being monitored properly by the phone? where the phone is going down steadily and then it realises the battery is at a slower percentage than its already displaying?
or is it something else?
This has happened to me several times previously. though no reboots, and battery life is still good.
as you can see here it drops from 86% to 77% whilst the -mAh is at -9mAH

Use a app such as better battery stats and debug your apps. There's most likely a app causing the phone not to properly deep sleep
Sent from my Nexus 6 using Tapatalk

zephiK said:
Use a app such as better battery stats and debug your apps. There's most likely a app causing the phone not to properly deep sleep
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
i used to use bbs, but then found wakelock detector easier to use. if i install v2.000b7, do i just go into the advanced setting and add debug info to logcat?

Re: Phone deep sleep battery drain
I have also come across the sudden battery drain issue this past week. My phone deep sleeps well and I can find no wakelocks. It appears to use excessive battery when idle. I have tried a fresh, blank install of CM11S 44S and that didn't resolve the issue. I have since moved to Cm11 nightlies and that slowed the battery drain but I am losing 12% battery per hr when idle and the phone is staying warm. I do not understand how this happened and why it just spontaneously began. A fresh install with no additional apps, and no problems entering deep sleep. shouldn't be doing this This phone was brilliant for battery life and I cannot work out how to resolve this.

shanerm said:
I have also come across the sudden battery drain issue this past week. My phone deep sleeps well and I can find no wakelocks. It appears to use excessive battery when idle. I have tried a fresh, blank install of CM11S 44S and that didn't resolve the issue. I have since moved to Cm11 nightlies and that slowed the battery drain but I am losing 12% battery per hr when idle and the phone is staying warm. I do not understand how this happened and why it just spontaneously began. A fresh install with no additional apps, and no problems entering deep sleep. shouldn't be doing this This phone was brilliant for battery life and I cannot work out how to resolve this.
Click to expand...
Click to collapse
Have you checked what frequency your CPU is at while idle?
Transmitted via Bacon

Re:Significant battery drain
timmaaa said:
Have you checked what frequency your CPU is at while idle?
Transmitted via Bacon
Click to expand...
Click to collapse
I have checked that and it appears to be sitting at the minimum 300MHz as far as I can tell. Since posting I have tried PA 4.6 for 24 hrs, no additional apps, and now I have moved to Liquid Smooth Lollipop nightly just to see how they compare. Even changing radios doesn't appear to have any impact on the power consumption.
When using GSam battery monitor on both the CM11 and PA (both behaved similarly) my phone was using anywhere from 500mA to 800mA (minimum screen brightness) for no apparent reason. I am unsure what usage this phone should be to be honest but I think that is high.
On Lillipop, the category 'Miscellaneous' is by far the greatest usage category and is seeing 2-3 times expected mAh drain compared to its computed usage, though I am unsure how that is worked out.
The most my phone will last now is 8hrs standby, in deep sleep. I am beginning to wonder if there is something wrong with the hardware of this device now. Perhaps the power regulator... Not sure what test to do next TBH
Thanks for your reply

shanerm said:
I have checked that and it appears to be sitting at the minimum 300MHz as far as I can tell. Since posting I have tried PA 4.6 for 24 hrs, no additional apps, and now I have moved to Liquid Smooth Lollipop nightly just to see how they compare. Even changing radios doesn't appear to have any impact on the power consumption.
When using GSam battery monitor on both the CM11 and PA (both behaved similarly) my phone was using anywhere from 500mA to 800mA (minimum screen brightness) for no apparent reason. I am unsure what usage this phone should be to be honest but I think that is high.
On Lillipop, the category 'Miscellaneous' is by far the greatest usage category and is seeing 2-3 times expected mAh drain compared to its computed usage, though I am unsure how that is worked out.
The most my phone will last now is 8hrs standby, in deep sleep. I am beginning to wonder if there is something wrong with the hardware of this device now. Perhaps the power regulator... Not sure what test to do next TBH
Thanks for your reply
Click to expand...
Click to collapse
The next thing I'd do would be a complete wipe and flashing the fastboot images. This still return the device to a completely stock state (including wiping the user data), leave it like that (don't install any apps) and test for a day or two.
Transmitted via Bacon

Re: Bat Drain
timmaaa said:
The next thing I'd do would be a complete wipe and flashing the fastboot images. This still return the device to a completely stock state (including wiping the user data), leave it like that (don't install any apps) and test for a day or two.
Transmitted via Bacon
Click to expand...
Click to collapse
Before flashing the CM11 Nightlies to see if they rectified the issue, I had downloaded and clean flashed the stock 44 image via fastboot but the issue remained. I shall re flash it though and post back...

Re: Bat Drain
shanerm said:
Before flashing the CM11 Nightlies to see if they rectified the issue, I had downloaded and clean flashed the stock 44 image via fastboot but the issue remained. I shall re flash it though and post back...
Click to expand...
Click to collapse
Fresh install, data off and left to own devices for a few hours and it is deep sleeping like you would expect, but a neat linear drop in the battery of 10-12% per hour as before...

I saw the same type of behavior while running CM11 based ROM. At night, I would put device into sleep (no data/no wi-fi/no sync/etc.) - basically everything off. In the morning, it would still show 100% - but then quickly drain several percentage each minute for the first 10 or so minutes. It was like it was catching up to the correct %. I have used wakelock and BBS and nothing sticks out. I also set Google Play services to stop wake (which did help battery life a lot).