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.
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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
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I've been using the latest gingerbread builds and I'm having great battery life, But I notice when I use AOKP or any kind of ICS rom my battery life isnt so great..
Is there a specific kernel you people are using? and What kernel settings are working the best for you?
Thanks!
xamadeix said:
I've been using the latest gingerbread builds and I'm having great battery life, But I notice when I use AOKP or any kind of ICS rom my battery life isnt so great..
Is there a specific kernel you people are using? and What kernel settings are working the best for you?
Thanks!
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Click to collapse
This turned into a vs thread which is no bueno
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xamadeix said:
I've been using the latest gingerbread builds and I'm having great battery life, But I notice when I use AOKP or any kind of ICS rom my battery life isnt so great..
Is there a specific kernel you people are using? and What kernel settings are working the best for you?
Thanks!
Click to expand...
Click to collapse
Good news that you are not alone. Based on my premature calculation, only 10 out of 100 (that's 10% ) ICS ROM users have good - great battery life, meaning the rest is having worse. Mine is falling into that group. I never have great battery, only so-so and below average.
Also as Nick has mentioned, asking for which best is a NO NO here.
One might be good for me, doesn't mean it will be good for you and vice versa.
Try them all and pick one that best suite for you.
My 2 cents......I know you have read this several times - but battery life is really dependent on a lot of factors - your AT&T signal, rogue apps, data sync frequency, CPU governor etc. etc.
read Entropy's excelled thread on battery drain on this forum.
i tried out a few GB roms over the last few weeks and really did not notice any battery improvement over ICS.
Currently running cMIUI with xxkernel and it is really working out great as in the battery easily lasts for the whole day.
I remember when I was on stock GB I could go upto 2 days on single charge - but that may be due to the battery being brand new. I have read that the battery in SGS2 really degrades fast
I have 2% drain per hour when doing absolutely nothing, screen off, wifi off, gps off during 8 hours overnite.
While someone has reported having only 2% or 3% drain over 8 hours overnite.
votinh said:
I have 2% drain per hour when doing absolutely nothing, screen off, wifi off, gps off during 8 hours overnite.
While someone has reported having only 2% or 3% drain over 8 hours overnite.
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Have you tried using "Better Batter Stats" to see what is causing the drain?
I have been using AOKP since Task brought it to us and I average 1% every two hours over nite.
Do you use the Facebook app? That sucker is hungry for your juice.
dschreiber69 said:
Have you tried using "Better Batter Stats" to see what is causing the drain?
I have been using AOKP since Task brought it to us and I average 1% every two hours over nite.
Do you use the Facebook app? That sucker is hungry for your juice.
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I got BBS v1.7 for a while, that was absolutely no help.
I installed BBS 1.8 for about a week. Based on their info, I got the "multipdp" along with some other things (such wake-lock) cranked up big time.
I read the Entropy thread, not much help.
Note: Wifi is off.
Maybe 3G/H+ keep toggling for sync process?
I do use facebook! haha. and I havent used better battery stats
dschreiber69 said:
Have you tried using "Better Batter Stats" to see what is causing the drain?
I have been using AOKP since Task brought it to us and I average 1% every two hours over nite.
Do you use the Facebook app? That sucker is hungry for your juice.
Click to expand...
Click to collapse
I'd also recommend using CPU Spy in conjunction with Better Battery Stats to see if the phone is able to enter deep sleep.
I don't get as good as you. . .I average about 1% or less per hour overnight. But that's with wifi on, periodic syncing of 7 accounts, scheduled backups and cache cleaning going on.
votinh said:
I got BBS v1.7 for a while, that was absolutely no help.
I installed BBS 1.8 for about a week. Based on their info, I got the "multipdp" along with some other things (such wake-lock) cranked up big time.
I read the Entropy thread, not much help.
Note: Wifi is off.
Maybe 3G/H+ keep toggling for sync process?
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Click to collapse
My understanding is multipdp will show when apps are waking the radio to use cell data - each wake instance results in a minimum of 6 seconds of wakelock. Switching to wifi when you are idle "should" eliminate this wakelock.
I could be wrong here...dig into the known battery drainers thread from around the time the first ICS roms were being tried on the i777. There was some discussion of it...it is a renamed version of some other wakelock in GB.
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That's what I said, "maybe 3G/H+ toggling".
I believed that if I left wifi on overnite, do nothing, I still had 2% drain per hour.
Let me completely turn off data tonite and see how thing goes.
errrrr I have a huge problem with my battery. I've been testing various ICS roms and kernels(aokp, foxhound, serendipidity, fluxxi Kernel, siyah 3.4.3.,Neak) and all of them with the exception of serendipity w/siyah kernel, drain my battery real fast.
Not really sure what the problem is but when I look at what's been using the battery its most of the time either screen (which is understandable) and android os? I went to bed last night leaving my phone at 100% and woke up to find it at 52%. When I looked at what was using the battery it displayed, 93% android os and only 3% cell standby??(btw Foxhound ICS, Siyah Kernel) Maybe I have to many things updating/syncing?
When I first got my phone, 2-3% battery drain overnight was one of the things that amazed me about stock gingerbread on the i777.
I've flashed alot of roms since then, and so far, no ROM can even touch that stat.
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
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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
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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
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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.
Recently had some issues with battery life so went out and did some research asked some questions and i'm quite happy with the result.
Started at 95% Battery
Down to 10%
16h 17m 50s on battery
Screen time on: 3h 46m 49s
Wi-Fi been on for about half of that
Used Chrome to browse the web
Played some Angry Birds
Played some Bad Pigs
Checked Facebook/Twitter
Could improve this more i guess as i'm currently not running full battery profiles on Siyah but quite please. Just wanted to compare to others and see if its any good or not.
On a side note my mother in-law came round today check her stats 1d 12h on her phone and still had 40% battery on stock ICS lol but she only uses it to text/call.
I'm running omega Rom v29 with phenomenal medium kernel and powwersave mode on. I've Been using my phone most of day for calls light browsing and xda I'm currently sitting at 52 percent with 13h since last charge
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to achieve insane battery life. useany JB based Samsung ROM. Freeze anything you dont use via TB. Then Flash latest perseus Kernal. set your phone to power saving mode. there no lag on power saving mode with his kernel. finally,drain your battery completely. turn it on, charge to 100. then turn off the phone, keep chARging to full. and use it for couple days, then report back
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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.
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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.
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