Before I entered the world of custom ROMs, my i9300's battery was fine. However, when I flashed my first custom rom months ago (CM10.1 nightly), my battery would drain from 100% to 0% in around four or five hours. This was only on light to moderate use, with a bit of Web browsing and Kindle. GPS and mobile data are almost always both off, other than when I need them, and brightness is set at the lowest possible 90% of the time. I checked my battery usage in the settings and there was no evidence of the renowned mediaserver cause of battery drainage, so I'm not really sure what the cause is.
Also, a few days ago my phone began reaching extreme temperatures when I executed any operation on my phone. At the moment I am typing in xda only and my battery is at 111 degrees. I noticed that it began with a certain nightly of Carbonrom and Temasek kernel.
I have done numerous factory resets and flashed different ROMs and even gone back to stock and fully unrooted, but the problem persists.
Has anyone else experienced the same problem? Any help would be appreciated.
Sent from my GT-I9300 using xda premium
Sounds like a really bad battery drain.. You might wanna freeze some unused Google apps and underclock the CPU temporarily while you look for a better solution.
That's the problem. I'm underclocked to 1Ghz and my battery is currently 116 and draining ridiculously fast.
Sent from my GT-I9300 using xda premium
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I am having huge issues with my battery on my galaxy s2. It drains really fast, 60% over the last 15 hours this night when the phone has been idle. This has been an issue for about a week now; I cannot seem to find a solution? I have tried various roms, wiping and doing a clean install, but the problem continues. Currently using lightening rom 3,2.
Do anyone know what can be causing this battery drain? Is the battery defective??
What apps do you have installed?
Sent from my GT-I9100 using XDA App
That is quite a drain I can see there. The drain might be caused by having too many widgets or having too many applications open. If you plan to put it on standby, do close those apps that are not important to you.
Have you tried rebooting?
I have a stock lightening rom 3,2. no apps installed, except titanium backup pro and opera mobile. I have frozen all kinds of stuff in titanium to try find the cultprit, but without success. As you see, no apps except andoid OS is running. Same drain on villainrom, lightening. Don't know what can be causing the error. Is there some way to check if the phone or the battery it self is to blame?
Try with screen on - normally I think that should run for 6 hours or so. Using that as a reference, you can check to see if the energy stored in the battery is normal. It doesn't look like your OS is staying overly active to me.
Hi bjorninge,
Every time after you flash a new ROM you should calibrate your battery.
Get the app "battery calibration" from the market and follow instructions and please report back whether you can achieve better performance.
Cheers,
bamthwok
bjorninge said:
I am having huge issues with my battery on my galaxy s2. It drains really fast, 60% over the last 15 hours this night when the phone has been idle. This has been an issue for about a week now; I cannot seem to find a solution? I have tried various roms, wiping and doing a clean install, but the problem continues. Currently using lightening rom 3,2.
Do anyone know what can be causing this battery drain? Is the battery defective??
Click to expand...
Click to collapse
I have a similar issue, as was the same with my captivate. I have stock ROM on my GS2 though, the way I got it out of the box pretty much. Android OS takes up most of the battery usage. I don't know what it is. Widgets updating constantly? The constant syncing from Gmail/push email?
Well that's surprising! Awake and Screen On bar is quite low and totally synchronized, yet 60% drain, now I gotta say it's weird.
bamthwok said:
Hi bjorninge,
Every time after you flash a new ROM you should calibrate your battery.
Get the app "battery calibration" from the market and follow instructions and please report back whether you can achieve better performance.
Cheers,
bamthwok
Click to expand...
Click to collapse
Tried calibrating the battery, but it doesn't seem to help too much
yugotprblms said:
I have a similar issue, as was the same with my captivate. I have stock ROM on my GS2 though, the way I got it out of the box pretty much. Android OS takes up most of the battery usage. I don't know what it is. Widgets updating constantly? The constant syncing from Gmail/push email?
Click to expand...
Click to collapse
Unfortunately, I have the same issue as you've described above. I am running on stock KE2 kernel and the battery drain is quite a lot. The 'Android OS' is always consuming a lot of processor time on standby mode.
This needs to be fixed A.S.A.P.!
Download and install the app BetterBatteryStats from Android section, it is a very useful app which will show what Awaking the device from deep sleep and processes too. For me, it was the damn Latitude stuff going on background and wasn't letting the device to go to deep sleep.
Regards.
Sent from GT-I9100
Thanks for the tip. I have downloaded the app now. what spesifically should I look for?
You just look under 'Wakelocks' and you will know what apps are causing the Awake, then you could take further steps.
Regards.
Would be great if you could look at the screenshot and tell me if something is wrong. Also, after the battery calibration, I've "only" lost 26% the last 7 hours mostly idling. I don't see anything abnormal in the screenshot I provided :/
Well nothing is wrong imo as everything is very low. You should check those which are using more than 10 mins Wakelock, some seconds doesn't matter actually. And you can post any query further to the original thread of this app, here,
http://forum.xda-developers.com/showthread.php?t=1179809
Regards.
OK, So I'm now back to 12% battery usage (from 100% to 88%) with 17 hours and 30 mins on battery, which IMO is normal.
What did I do? Well, I removed the battery and put the rest of the phone into the stove for an hour on 50-60 degreed celsius. My 98% android OS usage is gone and the battery works as normal .I also had problems with the phone constantly going into "car mode" which is now gone.
I got some tips around the internet that my issues were all related to moisture on the inside of the phone.
I have a stock SGS2 with a lot of widgets running. I use BetterBatteryStats and have removed the high power usage apps.
Past few days, the phone uses a lot of battery at night. Yesterday it had 32% battery and when i woke up it was dead.
Are the rest of you also seeing this much battery consumption every night ?
Funnily enough I've had exactly the same issue since about a week ago. Even when I take it off charge it's almost immediately down to around 80%. It's lasting around 4-5 hours, even when I'm not using the phone much, plus it gets really hot.
A couple of times Social Hub has appeared high up on the list of battery draining apps, although I don't use it. It doesn't always show up though. I switched to the CF-Root kernel and started using GO Launcher EX recently and wondered if that (or one of it's addon widgets) could be the cause.
It's really bugging me now!
I gave up with the stock S2. Rooted it and flashed MIUI to it along with the Siyah Kernel. Now it uses only 6% for the whole night. Battery usage is so much better now.
People having issues with battery should try the siyah kernel and change governors (unless some app was draining your battery)
yeah, actually some new users will experience battery problem. however, some says that when time goes by, the problem eventually sorted out itself.
i am guessing the phone need "warm up time"
I had the same problem with stock rom. you have to remove the preinstalled useless samsung apps. then battery consumption is better.
i am now on cm7. everything is working and around 8% per night with a lot of background processes (tasker, lbe, scheduled titanium backup).
Don't always turn on wifi or data unless necessary.Turn off background sync.This should help a lot even u r using stock rom.Kill tasks with built-in task manager.Make sure useless apps are not running in background.
With these tips,my s2 with rooted stock rom and stock kernel only consumed 3% of battery all night .
i keep wifi or gprs on for instant messaging needs. The Siyah kernel and the lulz governor give amazing battery life because process runs at lower clocks instead of jumping to 1200 unnecessarily.
The stock kernels aren't too bad in my experience.
I think you will find your battery drain will be caused by rogue apps before the kernel.
Edit: why have this phone if your going to turn off gsm and data etc. May aswel turn the phone right off and have zero drain overnight.
A drain of 1-3% per hour with everything turned on is normal for me.
Sent from my GT-I9100 using XDA App
I haven't got over 2 hours of screen on time in a hella long time. In my stats I'm not getting any strange results, screen is getting 60% and everything else is under 10% which is normal. I was getting very good battery life in gingerbread but ever since ics roms came out I haven't got anything good and its been a while. Why I think it might be my battery is because if its charging it will reach 110 degrees even if I'm leaving it alone. Screen brightness is under half and I've dropped about 5% just typing this out. Under moderate use the phone will seem to heat up more than it should, so I'm just looking for a little input
Sent from my SGH-I777 using xda app-developers app
jamezz23 said:
I haven't got over 2 hours of screen on time in a hella long time. In my stats I'm not getting any strange results, screen is getting 60% and everything else is under 10% which is normal. I was getting very good battery life in gingerbread but ever since ics roms came out I haven't got anything good and its been a while. Why I think it might be my battery is because if its charging it will reach 110 degrees even if I'm leaving it alone. Screen brightness is under half and I've dropped about 5% just typing this out. Under moderate use the phone will seem to heat up more than it should, so I'm just looking for a little input
Sent from my SGH-I777 using xda app-developers app
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I have seen many post that people talk about heat and battery drain after flashing an ICS ROM... So it might not be your battery, what ROM and kernel are you running does it do it with screen off and in deep sleeping? I have some more battery drain on ICS but never heat issues even watching HD videos wont heat up the phone. It sounds like you have an app spiking your CPU, try tuning on Show CPU usage in menu / system settings / developer options / Show CPU usage at idle with wifi on mine was approx. around 0.08/1.00/1.20 - 0.50/1.50/2.0 I hope some can give you more info how to check CPU info... GL here is a link to DL CPU Spy it might be able to help find the problem....
https://play.google.com/store/apps/details?id=com.bvalosek.cpuspy&hl=en
Check for better ROM/Kernel combos
Having flashed a lot of ROMs and Kernels, if they don't work well together (and sometimes if they do) your battery life is severely impacted. Since the change came when you updates to ICS, it seems likely thats the cause. Try finding kernels that allow you to use SetCPU or another regulator. You can set power modes to conserve battery, set a scheduler, and most importantly, set up profiles to keep it from heating up!
In short, search the forums for good ROMs, there are no shortage and some are designed to be battery friendly, best of luck!
PS. sometimes after flashing a new ROM, your battery calibration will be off and you'll get wild fluctuations or usage. Some say you can do a process to recalibrate, others say it doesn't work, but it doesn't hurt to try it yourself.
[
QUOTE=jamezz23;28479050]I haven't got over 2 hours of screen on time in a hella long time. In my stats I'm not getting any strange results, screen is getting 60% and everything else is under 10% which is normal. I was getting very good battery life in gingerbread but ever since ics roms came out I haven't got anything good and its been a while. Why I think it might be my battery is because if its charging it will reach 110 degrees even if I'm leaving it alone. Screen brightness is under half and I've dropped about 5% just typing this out. Under moderate use the phone will seem to heat up more than it should, so I'm just looking for a little input
Sent from my SGH-I777 using xda app-developers app[/QUOTE]
My dad's galaxy s2 seems to drain pretty fast. When hardly using the phone (screen time of less than 20 minutes) the phone dies after being idle for a maximum of 13 hours.
When using GSam Battery Monitor to see what is draining the battery, everything seems normal expect for 'Kernel'. 'Kernel' uses 40% up to 85% of battery out of everything running on the phone. When the phone has been on for 10+ hours 'Kernel' is using more than 2 hour cpu time.
When looking at BetterBatteryStats nothing strange shows.
When looking at Cpu Spy the phone deep sleeps a lot (60-80%) and 200 Mhz being the most used frequency after deep sleep (15-35%).
Pretty much everything seems to be fine, no apps draining the phone as far as I can see. No sync stuff draining the phone.
The only thing I noticed is that 'android system' is using the accelerometer and gyroscope for quite some time (it seems the accelerometer is always in use, the gyroscope can be in use for 30min-2 hours depending on how long the phone has been on).
For me it's not clear why 'Kernel' is using that much bettery. Looking at my HTC One X for example it almost never uses more than 9% battery (out of 100% which includes everything, radio, apps, wifi, etc). On my HTC One X 'Kernel' also almost never uses more than 25min cpu time even when the phone has been on for 13+ hours. It sounds to me that the kernel shouldn't drain the battery that much, especially when the phone is deep sleeping a lot.
I'm running CM9 RC2 (been using the CM9 nightlies before RC2, same issues). Tried other roms like NeatLite and NeatFull. Tried stock kernels from those roms, and tried other kernels as well. Same issue.
Any help is very appreciated. Thanks in advance.
damanrico said:
My dad's galaxy s2 seems to drain pretty fast. When hardly using the phone (screen time of less than 20 minutes) the phone dies after being idle for a maximum of 13 hours.
When using GSam Battery Monitor to see what is draining the battery, everything seems normal expect for 'Kernel'. 'Kernel' uses 40% up to 85% of battery out of everything running on the phone. When the phone has been on for 10+ hours 'Kernel' is using more than 2 hour cpu time.
When looking at BetterBatteryStats nothing strange shows.
When looking at Cpu Spy the phone deep sleeps a lot (60-80%) and 200 Mhz being the most used frequency after deep sleep (15-35%).
Pretty much everything seems to be fine, no apps draining the phone as far as I can see. No sync stuff draining the phone.
The only thing I noticed is that 'android system' is using the accelerometer and gyroscope for quite some time (it seems the accelerometer is always in use, the gyroscope can be in use for 30min-2 hours depending on how long the phone has been on).
For me it's not clear why 'Kernel' is using that much bettery. Looking at my HTC One X for example it almost never uses more than 9% battery (out of 100% which includes everything, radio, apps, wifi, etc). On my HTC One X 'Kernel' also almost never uses more than 25min cpu time even when the phone has been on for 13+ hours. It sounds to me that the kernel shouldn't drain the battery that much, especially when the phone is deep sleeping a lot.
I'm running CM9 RC2 (been using the CM9 nightlies before RC2, same issues). Tried other roms like NeatLite and NeatFull. Tried stock kernels from those roms, and tried other kernels as well. Same issue.
Any help is very appreciated. Thanks in advance.
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Click to collapse
ok it isn't normal that the phone die after 13hours while sleeping, however the only app that will tell you every thing about the battery drain issue will be better battery status , try it and provide us with log, you will see about each app, and know if there is any app missbehaving, but if every works as expected , i think it will be abattery issue, change it and try,
btw: with cm9 you can't use stock kernels, use aosp/aokp kerenls, stock kernels only with samsung based roms
evaworld said:
ok it isn't normal that the phone die after 13hours while sleeping, however the only app that will tell you every thing about the battery drain issue will be better battery status , try it and provide us with log, you will see about each app, and know if there is any app missbehaving, but if every works as expected , i think it will be abattery issue, change it and try,
btw: with cm9 you can't use stock kernels, use aosp/aokp kerenls, stock kernels only with samsung based roms
Click to expand...
Click to collapse
I meant stock kernel as in the stock cm9 kernel.
I do think GSam Battery Monitor is a decent app for a global overview of what has been using the battery. When it says the kernel has been using the battery (by using a lot of cpu time), I do believe that's true. Especially since other phones in my household that aren't draining show the kernel is hardly using cpu time.
Here's a log file from BBS. Nothing strange to me, but maybe I'm looking at it wrong. See the attachment for the BBS log.
Bump, same issue. Accelerometer is also on for multiple hours. Battery drains too fast, noghing is amiss in BBS or Gsam.
i have exactly the same problem with my fathers s2.
can someone help?
michael
the same problem is with my SII & its started after I switched to AOKP JB MILESTIONE 1 ROM with Dorimanx Kernel..... Kernel CPU usgae is very high when screen is off for 5-6hrs.
Now, i have switched to Siyah kernel.... lets see if that improves the situation.
Hi, guys. At the moment I am using Johnny's CM10.1 ROM and everything works as it should, however, the battery life is relatively poor. The phone does go in deep sleep mode after the screen is off, but IMO deep sleep is not very efficient. I lose about 15% battery juice over night although CPUSpy does not record any CPU activity other than deep sleeping. Also, the phone is always a little bit hotter than normal. This problem should be kernel-related as it is not present when using a different one, such as Anryl's. Does anyone else have this same problem and if you do, how did you get past it? Please post your experience here as I've already mentioned this in the official thread and got no response whatsoever.
If you have FB installed it will eat up your battery, use the android sdk to monitor cpu usage.
Sent from my Evo 3D GSM using xda app-developers app
Like I said before.. 4.1/2/3 eats a lot of battery.. Try 4.4. .. I have 70 percents right now and the phone is 12 hours on the battery