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[Q] How can I find what's draining my battery?

My sensation currently has a power drain that I can't seem to find the cause for. I'm using InsertCoin 3.4.2 with bricked kernel 1.5, using SPB shell 3D launcher, got an Anker battery, running tasker to cut data, wifi, gps, etc whenever the screen is off, setCPU running ondemand with max at 1536mhz and minimum 192mhz, etc, etc.
I fully charged my phone to 100% about two or three hours ago, and it's been pretty much left alone since. It's now down to 68%.
I've got BetterBatteryStats and SystemPanel, both showing nothing untoward, no active tasks, no wakelocks from what I can tell, etc. And according to the standard app for battery monitoring, it shows the various connections have indeed been turning off as intended, and the phone has been asleep nigh on all the time it's supposed to be.
Any ideas what's going on, or how I could look into it deeper?

I've just been playing with the phone pretty much non stop since I started this thread an hour ago, and the battery level is now at 60%. So that means it's actually consuming MORE power when it's not even in use!

StuartTheFish said:
I've just been playing with the phone pretty much non stop since I started this thread an hour ago, and the battery level is now at 60%. So that means it's actually consuming MORE power when it's not even in use!
Click to expand...
Click to collapse
Hi,
There is a lot of talk about battery consumption,and it's causes.
Most people will suggest trying a different kernel,or downclock it to 1.2 GHZ.

I've tried different kernels already, and underclocking the cpu seems to make little difference. As I say, setCPU should be knocking it down to 192mhz whenever the screen is off anyway!

StuartTheFish said:
I've tried different kernels already, and underclocking the cpu seems to make little difference. As I say, setCPU should be knocking it down to 192mhz whenever the screen is off anyway!
Click to expand...
Click to collapse
Hi,
Is your ROM a 2.3.4 base or 2.3.5 ?

2.3.5 mate. It's InsertCoin 3.4.2, with sense 3.5 (which I'm not using in favour of SPB).

StuartTheFish said:
2.3.5 mate. It's InsertCoin 3.4.2, with sense 3.5 (which I'm not using in favour of SPB).
Click to expand...
Click to collapse
Hi,
I was going to suggest bricked 0.9.1 with a 2.3.4 ROM,because my son has had great results on his Sensation.
I do not know IC well enough to help.
Sorry.

No problem, thanks for your input anyway.

StuartTheFish said:
No problem, thanks for your input anyway.
Click to expand...
Click to collapse
1)Try his new test version of bricked(beta4).
http://code.google.com/p/bricked/downloads/list
2)Charge to 100
3)Turn off, wait till green, unplug and plugin(bump charging)
4)Boot to recovery thru bootloader and wipe battery stats and then reboot unplugged
Drain you battery to 1, then charge up and repeat for a few days. And you can lower the clockspeed since you're using ondemand, you won't see a speed difference with 1.2 and higher. Oh and use ultra smooth rosie so the home will be faster...And see which apps are open in B/G.
http://forum.xda-developers.com/showthread.php?t=1302914

With the exception of trying the beta bricked kernel, I've already done all that when I first got my anker battery. It's not a calibration issue, it's that something is actually draining the battery even when it should be asleep.
And that rosie change isn't needed, as I'm not even using sense in the first place. I've got no real issues with how the phone actually performs as everything is already perfectly smooth. The only slight issue I have is since flashing the amaze camera, on rare occasions it can lock up when exiting it, requiring a battery pull to get going again.

StuartTheFish said:
With the exception of trying the beta bricked kernel, I've already done all that when I first got my anker battery. It's not a calibration issue, it's that something is actually draining the battery even when it should be asleep.
And that rosie change isn't needed, as I'm not even using sense in the first place. I've got no real issues with how the phone actually performs as everything is already perfectly smooth. The only slight issue I have is since flashing the amaze camera, on rare occasions it can lock up when exiting it, requiring a battery pull to get going again.
Click to expand...
Click to collapse
Oops missed the part about SPB, I have been having similar issues but with Faux's kernel after using Amaze cam, but I doubt that could cause sleep drain. I think you drain is caused by the phone not entering "Deep Sleep", some rogue app is keeping the phone partially awake and sucking up juice. I'm gonna go on a hunch and say the phone is running around 1.x GHz while screen if off due to the app.

StuartTheFish said:
With the exception of trying the beta bricked kernel, I've already done all that when I first got my anker battery. It's not a calibration issue, it's that something is actually draining the battery even when it should be asleep.
And that rosie change isn't needed, as I'm not even using sense in the first place. I've got no real issues with how the phone actually performs as everything is already perfectly smooth. The only slight issue I have is since flashing the amaze camera, on rare occasions it can lock up when exiting it, requiring a battery pull to get going again.
Click to expand...
Click to collapse
Hopefully mine can help you. I also noticed HUGE battery drain issues in the past using Bricked Kernel, so I then reverted to stock. Battery was GREAT, but the stock kernel blows. So yeah, I went back to bricked and using the 3rd? beta right now. My battery started dropping like crazy again, so I thought it was the kernel. Before, I used bricked and it was fine so again, I couldn't really blame the kernel. What I tried after that is deleteing my OC app (I've used both SetCPU and System Tuner) and since then, battery is great again! You can try this and hopefully it'll help!

Tried that already as I too suspected the OC app a few days ago. Made no improvements to battery life, so I've put it back on today. Not tried a different kernel yet though, as I'd read that the bricked kernel was the best choice with InsertCoin? I used faux123's kernel first of all, but found it ran hot and kept crashing...
Down to 30% now by the way.
Ace42 said:
I think you drain is caused by the phone not entering "Deep Sleep", some rogue app is keeping the phone partially awake and sucking up juice. I'm gonna go on a hunch and say the phone is running around 1.x GHz while screen if off due to the app.
Click to expand...
Click to collapse
That's what I'm suspecting too, but I don't know how to go about finding it. I've looked with SystemPanel and BetterBatteryStats and haven't spotted anything, but that could just be because I'm not 100% on what to look for. And why would setCPU not be overriding it and making it clock down to 192mhz whenever the screen is off anyway? Isn't that it's job?

Then try the stock and see if it's still draining. When I tried stock and everything was great, I just simply assumed that it wasn't an app. It was the kernel!

I'm not convinced it's the kernel though, as if it was then battery life would have been crap ever since I flashed it. It hasn't been, it's only been bad for the past few days. Are there any links to the stock kernel just in case I can't find anything else?

- mine is 24 hrs
- heavy use 16 hrs
. Used some aninations only
. Turn off wifi when not in use
. Used only 20% brightness
. Used juice defender
. Downclock to 1.2 ghz intellideman
And ofc my kernel and rom that im using right now!
Thank me if I helped

I use bricked and i actually got better batter out of it but itsn still not up to par.. However fauxs ran faster but my phone was getting up to 47C... Way too hot.. I don't know why mines running so hot.. Using coredroid 2.6. 1.5 bricked kernel. wiped dalv and cache and battery stats... blah.. any input? i had setcpu and deleted it.

SetCPU is uninstalled again now to see if it was causing anything, and there's still a drain on the battery when it should be sleeping. Does anyone have any tips on how to find what's keeping it awake? It's been fully charged again, been unplugged for just one hour and it's down to 80% battery. Not even been using it apart from me flashing the InsertCoin Bravia addition onto it, making it 3.4.3.
One thing I have noticed though, is that BetterBatteryStats says the RILJ dialler has been running for 5m 33s since it was last charged, 775 times, 8.9%. This is on the partial wakelocks screen, whatever they are. Everything else listed is under 1%, with the only exception being the alarm at 1.6%. What does this mean?

[Q] How to improve battery life on CM9?

My current build is attached.
I have auto sync on because i need my email, brightness on VERY low. Bluetooth, GPS are both OFF.
Wifi is on when im at home and im getting 3-5 hours of battery life out of my SR...
PLEASE help. What am I doing wrong? What is the matter here?

I would recommend the InstigatorX or Cymbaline kernel with the badass or SmartassV2 OC/UV governor. Also, check your BLN and haptic settings as they can drain battery also.
Sent from my SGH-I727

ay****onxion said:
I would recommend the InstigatorX or Cymbaline kernel with the badass or SmartassV2 OC/UV governor. Also, check your BLN and haptic settings as they can drain battery also.
Sent from my SGH-I727
Click to expand...
Click to collapse
Thank you ill give this a shot, does the battery life im getting sound normal based on my setup though?

Ompalompa287 said:
Thank you ill give this a shot, does the battery life im getting sound normal based on my setup though?
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Click to collapse
3-5hours of battery life doesn't sound normal unless you were using it heavily like playing a graphic extensive game or driving with the screen on with GPS and streaming music.. if you were using it lightly you should see about 10-12 hrs, very light 15~ and barely using it 20+ with regular use maybe an average of 9hrs. Things like wakelocks can also be the culprit, thats when the phone doesn't stay on low CPU clocks or deep sleep but stays at full load speeds when not in use and that will drain the battery pretty quickly.

I too am having this issue. On battery use it list phone as taking %55 and screen at %8. This indicates.a.wake lock issue, correct?

I recommended installing Better Battery Stats and checking your wake locks.
Also if the phone app is killing your battery, it is due to bad signal. Also known as rillj wake lock. Or so I've heard. I've yet to find a solution other than flashing radios that may or may not help signal.
Sent from my SGH-I727

almost 70% deep sleep / 30 % awake when screen off

so I was wondering why I have terrible battery life on my phone not the worse it could be but my phone is being awake while the screen is off way too much. I'm using betterbattery stats app can someone please pinpoint the app that is causing my issue? see attached images also 3rd image is kernel wake locks im using latest synergy build with imoseyons kernel and ive tried trinity kernel and ive had this problem in stock what is causing so much kernel wake locks???as you can see 6 hours of phone time only 6 minutes of screen time and I drop 27% battery is that bad? i know standby time use to be way better with my droid one but what is average wakelock for most peeps?

droidfta said:
so I was wondering why I have terrible battery life on my phone not the worse it could be but my phone is being awake while the screen is off way too much. I'm using betterbattery stats app can someone please pinpoint the app that is causing my issue? see attached images also 3rd image is kernel wake locks im using latest synergy build with imoseyons kernel and ive tried trinity kernel and ive had this problem in stock what is causing so much kernel wake locks???as you can see 6 hours of phone time only 6 minutes of screen time and I drop 27% battery is that bad? i know standby time use to be way better with my droid one but what is average wakelock for most peeps?
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Click to collapse
See how your top 3 partial wakelocks are related to alarms? Particularly the AlarmReciever. Something is regularly telling your phone to wake up at a specific time. You'll need to check/post a screenshot of the Alarms list. It could be any number of things such as apps syncing or Google Now gathering information in the background. Get that other screenshot up and I'll try to help more.

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] 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?