Battery life after ICS update - Galaxy S II Q&A, Help & Troubleshooting

I have updated my S2 with the official ICS. My battery life is now so poor I struggle to get a full day's use. Before the update I would get about two days with moderate use. I have read that the battery life should improve with ICS update. Can anyone explain this and give a solution as it is very frustrating.
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ADe6 said:
I have updated my S2 with the official ICS. My battery life is now so poor I struggle to get a full day's use. Before the update I would get about two days with moderate use. I have read that the battery life should improve with ICS update. Can anyone explain this and give a solution as it is very frustrating.
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
try some batt monitoring apps from market and see whats draining ur batt and resolve the same either by force stopping those apps r deleting them if u find they r batt drainers
and also for ICS it requires at least one r 2 recharge cycles for things 2 settle down

Sun90 said:
try some batt monitoring apps from market and see whats draining ur batt and resolve the same either by force stopping those apps r deleting them if u find they r batt drainers
and also for ICS it requires at least one r 2 recharge cycles for things 2 settle down
Click to expand...
Click to collapse
I am using a battery monitoring app and have closed apps that use most battery. I have also switched off wifi, sync, gps which I never used to do, but still no real improvement.
Sent from my GT-P7300 using XDA

Samsung Official ics will always be a battery eater.
Suggest you to root your phone and install a custom rom like wanam/slim etc. These will remove all unnecessary bloat wares giving u better battery and performance. (Do remember to read all the necessary info before u root).
Sent from my GT-I9100 using Tapatalk 2

ics generally uses more battery than gingerbread
i remember getting 3 days easy on moderate use on cm7
still you can try custom roms because they give better battery life

ADe6 said:
I am using a battery monitoring app and have closed apps that use most battery. I have also switched off wifi, sync, gps which I never used to do, but still no real improvement.
Sent from my GT-P7300 using XDA
Click to expand...
Click to collapse
Have you tried BadAss Battery Monitor?

imho: too many running services in background.. try to kill/freeze unnecessary apps(use link2sd), but most important thing is it seems that current ics is not optimally written/optimized, most kernel can help minimize this effect (but minimal e.g. speedmod)... if you can bare with this condition you ics is for you.. but if you are expecting an optimal performance of your sgs2, you should consider reverting back to gb ..

If you wish to remain on Stock Rom, please root your phone. CF-Root kernel here
http://forum.xda-developers.com/showthread.php?t=1103399
Then use Titanium Back to freeze unwanted apps which drains your battery. List of applications safe to remove here.
http://forum.xda-developers.com/showthread.php?t=1069924

Use BetterBatteryStats und search for the kernel wakelocks.
And use CPU Spy. How much is the amount of deepsleep?

Luppo9 said:
Use BetterBatteryStats und search for the kernel wakelocks.
And use CPU Spy. How much is the amount of deepsleep?
Click to expand...
Click to collapse
According to CPU spy deepsleep is at 42%.
According to badass battery the battery is consumed as followes: 60% kernel and rest of apps about 9% with none more than 1.5%. Balance is consumed by screen 15%, phone radios 3%, phone 13%
Sent from my GT-P7300 using XDA

UnderVoltage

ADe6 said:
According to CPU spy deepsleep is at 42%.
According to badass battery the battery is consumed as followes: 60% kernel and rest of apps about 9% with none more than 1.5%. Balance is consumed by screen 15%, phone radios 3%, phone 13%
Sent from my GT-P7300 using XDA
Click to expand...
Click to collapse
Deepsleep with 42% is far to little
Find out, with process drains your battery.
Use BetterBatteryStats und look for kernel wakelocks after display is 1 or 2 hours off.

I had the same problem a while back and battery would go down to 20% in about 5 hours. Did a factory reset because when I upgraded, I didn't wipe cache. I read somewhere that old gb code could cause issues.
After the reset, phone works great. I get to 50% battery in about 13 hours. If you can, give it a shot. Of course, back up paps with Ti, otherwise reinstalling them is a *****. :banghead:
Sent from my GT-I9100 using XDA

I'm quite satisfied, after first cycles now with stock Italian LPF and Phenomenal 5.4 Medium Kernel I have very satisfing results (I forgotten the phone on this night, in 5 hours it drained at least 1-2% of battery).
In normal operativity I'm on 13-16 hours with 1650mhA battrey.

Thanks will do that and post results for further help.
Battery life has now improved to about 15hrs since taking the battery out for recalibration and putting it through a few charge cycles. But this still feels to low.
Ps deepsleep still at 42%.
Sent from my GT-P7300 using XDA

oooor you can downgrade to Gingerbread and get a custom rom/theme for that awesome ICS feel and at the same time get awesome battery life

I backed up my data, did a factory reset, restored my backup, charged the battery and now the estimated battery (@ 64%) is about 30 hours. So it seems my battery problem is sorted. Holding thumbs!
Sent from my GT-P7300 using XDA

I suggest i apply all the Tweaks as possible first, secondly install a cok kernel like Siyah, then see if there's any difference
Imo, i bet ICS is eating more battery than Gb, so dont expect a better battery life, try to.enjoy the new feature instead
Sent from my GT-I9100 using XDA

Related

Poor battery performance

Does anyone know why i only get decent battery life with stock rom?
Every rom i try stinks for battery except eb01 stock rom.
Sent from my SCH-I500 using XDA App
rmlineback said:
Does anyone know why i only get decent battery life with stock rom?
Every rom i try stinks for battery except eb01 stock rom.
Sent from my SCH-I500 using XDA App
Click to expand...
Click to collapse
I normally don't do this but I have seen this question 5+ times in the past 7 days. Do a search my friend.
Thanks
Sent from my SCH-I500 using XDA App
My suggestion...
is to try Nitro's EC01 Rom, as well as Nemesis2all's updated kernel (Which gives you the ability to change volt settings, speed, etc) which can really improve your battery life.
Ya I would say try Nitro's Evil Fascination ROM and Nemesis2all's kernel as well. My battery life is pretty good without messing with the voltage. If you're still not getting great battery life you should a) download Juicedefender. The free version does an amazing job for me or b) do some research and try to adjust the voltage settings.
I just started using Active Apps from the market. I guess it's a Samsung product that you can use to replace Task Manager. Whenever I don't use it, my battery drains real quick, and without a specific pattern. When I use Active Apps, and use the Ram Manager level 2 kill, my battery drain instantly gets much lower. 5 hours unplugged yesterday only drained my battery like 11%. Compared to up to 30% otherwise. Hope this helps others too!
Try the app "juice defender " in the market. It makes my battery last 2ice as long
Sent from my Samsung Galaxy S Fascinate running CM7 GINGERBREAD thanks to JT1134
How long after battery calibration should I see a difference?
I need to reiterate what has been said: first, install Juice Defender and learn to tweak those settings, it's well worth it. Second, undervolt that puppy with Nemesis2all's latest kernel. At idle, my phone might last 48 hours [not tested].
I only ask because when I recalibrated my battery (charged fully, wiped stats, drained battery, fully charged with phone off) my battery life is worse
Sent from my SCH-I500 using XDA App
I update OTA last week on Verizon to Froyo 2.2. My battery was overheating and draining like crazy from my CPU usage being at a constant 99%..
I found the source of the problem. An app I use for facebook called "FLOW". The CPU usage was cut to 20% when I killed it with "Advanced Task Killer".
I resolved the issue by: Opening Flow.. going to Preferences.. Notification Settings.. Refresh Type.. Checked Periodic Polling (I was using Gmail Experimental previously)
Hope this helps...

[Q] So, is this typical battery life?

Stock battery
I have done everything from Autostarts to managing my processes constantly. I played hanging with friends, got on here, and texted.
I posted an updated battery usage. I have lowest brightness, lowest image brightness, 15s timeout, etc.
i would probably switch to conservative governor vs powersave
This isn't typical battery life
I'd advice you to use better battery stats and cpu spy to se what's causing your battery to drain so quickly
Sometimes I notice "back up" in bbs, and this casus my phone to drain within a day
Hanging with friends does consume a lot of battery, but I play it too, and this does not cause that much drainage..
I have ICScrewed and with a heavy usage, my phone usually last for 1.5 ~ 2 days
With moderate call/text and idle, it lasts for 4 days.
jc830 said:
This isn't typical battery life
I'd advice you to use better battery stats and cpu spy to se what's causing your battery to drain so quickly
Sometimes I notice "back up" in bbs, and this casus my phone to drain within a day
Hanging with friends does consume a lot of battery, but I play it too, and this does not cause that much drainage..
I have ICScrewed and with a heavy usage, my phone usually last for 1.5 ~ 2 days
With moderate call/text and idle, it lasts for 4 days.
Click to expand...
Click to collapse
Dang that is high! Are you sure about that? :O At medium usage /w unnamed i only get about 18 hours total. It was similar with ICScrewed too
Holy crap. I'll look into better apps. Could UnNamed be the culprit? Or the kernel?
Should I buy a new battery? The life waslike this for the few days I was stock, I think
I average around 17hr, on a good day I'll get 20h. I also recommend better battery stats, great app to see what's keeping your device from going to deep sleep.
Another great app is lbe privacy guard, you can deny certain apps and games some of the permissions they want (disabling GPS on those that really don't need it etc).
I'm on unnamed so that isn't the issue. Might be the kernel, just check the kernel wake clock in better battery stats to check. I'm on entropy's latest dd, while i do feel i got better battery life on the kernel with the latest unnamed ROM I'm not to sure if it's the kernel or something else.
Sent from my SAMSUNG-SGH-I777 using xda premium
glad4pie said:
Dang that is high! Are you sure about that? :O At medium usage /w unnamed i only get about 18 hours total. It was similar with ICScrewed too
Click to expand...
Click to collapse
Well, I guess it depends on how you define heavy and moderate... Haha
Sent from my SGH-I777 using XDA Premium App
jc830 said:
Well, I guess it depends on how you define heavy and moderate... Haha
Sent from my SGH-I777 using XDA Premium App
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Click to collapse
I'd be curious to see your graph. My battery is dead now, but tomorrow I'm going to get on and upload Better Battery Stats to my phone. I would've paid for it on the Market, but I couldn't find it when I searched. I'm curious to see what other people think. I switched all Powersaves to Conservative. Is OnDemand bad for my CPU as it constantly trips from 500MHz to 1.2GHz? Should I consider going to 1GHz?
jc830 said:
This isn't typical battery life
I'd advice you to use better battery stats and cpu spy to se what's causing your battery to drain so quickly
Sometimes I notice "back up" in bbs, and this casus my phone to drain within a day
Hanging with friends does consume a lot of battery, but I play it too, and this does not cause that much drainage..
I have ICScrewed and with a heavy usage, my phone usually last for 1.5 ~ 2 days
With moderate call/text and idle, it lasts for 4 days.
Click to expand...
Click to collapse
I have a hard time believing that. I've done everything I can to optimize my phone and reduce wakelocks and battery drain, and I still never get more than 20 hours on a good day, and that's with moderate usage.
How do you define "heavy usage"?
Sent from my SAMSUNG-SGH-I777 using xda premium
mattdm said:
I have a hard time believing that. I've done everything I can to optimize my phone and reduce wakelocks and battery drain, and I still never get more than 20 hours on a good day, and that's with moderate usage.
How do you define "heavy usage"?
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
I agree. This is my latest battery cycle of what I consider "moderate" use
What I'd consider light usage (about 10 minutes of voice, between 5-10 minutes of cellular data, 10-15 texts, and about 20 minutes of total screen-on time) I get about 35 hours.
I have managed to almost completely drain my battery in about 4 hours though... Thanks Game Dev Story!
mattdm said:
I have a hard time believing that. I've done everything I can to optimize my phone and reduce wakelocks and battery drain, and I still never get more than 20 hours on a good day, and that's with moderate usage.
How do you define "heavy usage"?
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
I will make sure to post up my graph when it does drain
I think my definition of heavy usage is moderate use for most people..
Here's the link to bbs http://forum.xda-developers.com/showthread.php?t=1179809
I realized I forgot to turn off data when I'm not using it, but I installed better battery stats and I didn't really see any wake locks. Should I try a different kernel? Any opinions on an efficient one? NOTE: I already got the yellow triangle for using the Odin way, so I'm fine with doing whatever to this phone.
I added my better battery stats shots. I guess today would be called a very light to light day.
wrathofnero said:
I realized I forgot to turn off data when I'm not using it, but I installed better battery stats and I didn't really see any wake locks. Should I try a different kernel? Any opinions on an efficient one? NOTE: I already got the yellow triangle for using the Odin way, so I'm fine with doing whatever to this phone.
I added my better battery stats shots. I guess today would be called a very light to light day.
Click to expand...
Click to collapse
I see two very top wake locks have kept your phone from sleeping for an hour..
That is a significant amount.
Also, use cpuspy to see how hard it's been working.
I would try to get rid of those top two wake locks...
Oh crap! I didn't see them until you brought it to my attention. That explains some of the idle drain. I'll look into CPU Spy. You guys have been so helpful!
Your kernel wakelocks had no data, probably due to BBS being a fresh install. A full charge should set a proper reference point.
jc830 said:
I see two very top wake locks have kept your phone from sleeping for an hour..
That is a significant amount.
Also, use cpuspy to see how hard it's been working.
I would try to get rid of those top two wake locks...
Click to expand...
Click to collapse
I don't think anything can be done about system logging as far as I have found.
promiseofcake said:
I don't think anything can be done about system logging as far as I have found.
Click to expand...
Click to collapse
If something's holding that many log wakelocks, something might be spamming a log somewhere.
I can't find anything to help with those two either. Or would seem that the keyguard might have something to do with text messages, but I can't see anything that would spam the log. Where might I be able to read this log?
Also, I'll post my CPU spy stats toward the end of the night. It's looking like it spends most of its time at 500MHz.
@wrathofnero You can remove the triangle with a usb jig. Worked for me.
Sent from my SGH-I777 using xda premium

Battery on Oxygen Rom last 10 hours while idleing.

I charged my p500 until 100% battery. I am using the latest Oxygen rom with the popdog kernel that was installed by default. I had my phone on 10 hours then it was at 8% battery while it was idleing. Wifi was off, and showed "cell stanby" used 51% battery and system idle drained 43%. I even had SetCpu on a profile so that when screen was off, the cpu was at 320/122 on concervative. This is unacceptable and I wish to have a lot more battery life especially of the oxygen rom. What could i do to get better battery?! Would franco's kernel help? (I already installed franco #4 and it only showed Concervative and performance for governers so I dont know why it wasnt showing anything else!??) Thanks and hopefully this can help anyone else with battery problems!
Sent from my LG-P500 using XDA
wagstuff13 said:
I charged my p500 until 100% battery. I am using the latest Oxygen rom with the popdog kernel that was installed by default. I had my phone on 10 hours then it was at 8% battery while it was idleing. Wifi was off, and showed "cell stanby" used 51% battery and system idle drained 43%. I even had SetCpu on a profile so that when screen was off, the cpu was at 320/122 on concervative. This is unacceptable and I wish to have a lot more battery life especially of the oxygen rom. What could i do to get better battery?! Would franco's kernel help? (I already installed franco #4 and it only showed Concervative and performance for governers so I dont know why it wasnt showing anything else!??) Thanks and hopefully this can help anyone else with battery problems!
Sent from my LG-P500 using XDA
Click to expand...
Click to collapse
Use betterbatterystats and find out your wakelocks
I don't think, finding wakelocks will solve such a drain...
Franco #4 kernel has only two governors, i guess... So it's not like ur phone isn't showing other govs.
Talking about Oxygen rom... I never got a backup more than a day, no matter what! I mainly use it for its smoothness...
kiran2cy said:
I don't think, finding wakelocks will solve such a drain...
Franco #4 kernel has only two governors, i guess... So it's not like ur phone isn't showing other govs.
Talking about Oxygen rom... I never got a backup more than a day, no matter what! I mainly use it for its smoothness...
Click to expand...
Click to collapse
Why? If I have a wakelock on for the whole night, I would have lose more than 40% battery extra than not having one at night.
Besides, that is the only probable answer, wakelocks. Even with 3G data plus sync on I lose about only 10%
Unless of course, you had very bad signal while your phone is idling.
Sent from my LG-P500 using XDA
nocterum said:
Why? If I have a wakelock on for the whole night, I would have lose more than 40% battery extra than not having one at night.
Besides, that is the only probable answer, wakelocks. Even with 3G data plus sync on I lose about only 10%
Unless of course, you had very bad signal while your phone is idling.
Sent from my LG-P500 using XDA
Click to expand...
Click to collapse
I agree with that... but i was talking about his drain..
Take a look at mine...
I guess this was the best my phone can do with Oxygen...
The signal strength wasn't weak, the phone was in airplane mode for 8hrs, and there were small awakes...
I wiped my phone and installed oxygen rom again and now i have been using for 15 hours and still have 78% battery, even with all the same apps installed!! If you have horible battery like i had, just wipe your phone. Deffinately works
Sent from my LG-P500 using XDA
not workin 4 me
wagstuff13 said:
I wiped my phone and installed oxygen rom again and now i have been using for 15 hours and still have 78% battery, even with all the same apps installed!! If you have horible battery like i had, just wipe your phone. Deffinately works
Sent from my LG-P500 using XDA
Click to expand...
Click to collapse
Wiping out d phone again n reinstallin d rom seems useless for me........

[q] battery drain help

My phone is experienceing severe battery drain whenever i use an app.
i tried switching between the leedroid v5.4 and nonsense 3.1 roms but both had the same problem anyone know a fix.
BTW i did not overclock
What wasted the battery
WHen i check to see what used teh battery is shows
CELL STANDBY 54%
sgaheer said:
WHen i check to see what used teh battery is shows
CELL STANDBY 54%
Click to expand...
Click to collapse
I noticed that my phone does that when I am in a weak service area. The radios use a lot of juice trying to get/keep a signal. You could try Better Battery Stats or Bad Ass Battery Monitor to see in more detail what is using your battery.
Sent from my PG86100 using Tapatalk 2
sgaheer said:
My phone is experienceing severe battery drain whenever i use an app.
i tried switching between the leedroid v5.4 and nonsense 3.1 roms but both had the same problem anyone know a fix.
BTW i did not overclock
Click to expand...
Click to collapse
you can also try to calibrate your battery with serval apps! type in play store : battery calibration ! they all do the same job and preaty good i must say..
i recommend you to try : Battery Calibration free . thats for rooted users and does great job!
Alright Thanks
I sorta realised it was due to my connection as my school has a really bad reception and thats where teh majority ofteh drain occurred will download that app
My personal experience!!!!! Flame me not!!!!!!
Ok here goes:
I don't use any battery calibration apps or system tuner or task killer any more. I test my battery like I test my gas mileage: ALL THE FRIGGIN' TIME!
I've found I get better battery life without these extra apps. However, I also completely strip all ROM's I use of completely unnecessary apps and their respective widgets (HTC News, HTC News and Weather, Jetset Printer, Stocks, Twitter, Picasa, Google +, etc.)
Now, the only app I would recommend and have heard from multiple sources and threads is Better Battery Stats. It has a nominal fee, however, is worth it. I will show you what is draining your battery.
You could also have wake lock problems. Who knows? Get some diagnostic info to post to better help those trying to help you. Help me, to help you! LOL!
saboxerman said:
My personal experience!!!!! Flame me not!!!!!!
Ok here goes:
I don't use any battery calibration apps or system tuner or task killer any more.
Now, the only app I would recommend and have heard from multiple sources and threads is Better Battery Stats. It has a nominal fee, however, is worth it. I will show you what is draining your battery.
Click to expand...
Click to collapse
Flame on! Just kidding. I also have never calibrated my battery as it is useless according to the Android engineers at Google.
The reason I also recommend Bad Ass Battery Monitor is because it is a little more user friendly.
Also, there is an xda version of Better Battery Stats that is available in these forums for free, although the Market version is cheap and supports the dev.
Sent from my PG86100 using Tapatalk 2
i have some problem, when my screen active, i put it to my pocket, then my body touch the screen and do random process abaout 45minutes.. done with 40% battery gone x_X.. i think u must tell us how long u use app
You can use battery calibration. you can find it in the android market
Have you tried reset battery stats then full charge, use it for a couple of minutes then full charge again? Don't know why it works but I have used this method on a couple of Roms and it seems to help
try clearing your battery stats full charge ur battery n then let it discharge fully then full charge once more n recalibrate it..should work
The main factor for preventing battery drains is to have a good modem that doesn't overheats the phone, using a ROM with deep sleep and a battery friendly kennel like Siyah or Fluxxi. Try to get those three things fixed and you should not have any more battery drains
Turn auto brightness off also make sure none of your apps are using your GPS all the time. I think the problem may be app related I would roll to a stock kernel and only use apps that are must need and see if that helps. Also your battery could be shot . How old is it ?
Sent from my PG86100 using xda premium
Downloaded badass battery monitor and it showed mediaserver was wasting my battery, so I got rid of any possible corrupted media, problem solved for now
Sent from my HTC EVO 3D X515m using XDA

[Q] Expected battery life on CM9?

There are loads of battery threads(almost too many to get any useful info out of!) but I just wanted to check that there is not actually something wrong with my Galaxy S2 in regards to battery life so can someone please let me know what the expected battery life is when running the following:
CM9.1 Stable
CM9 stock Kernel
BVP7 modem
I have the following apps installed along with the standard gapps:
Facebook
Flipboard
BBS
CPU Spy
Flipboard
Whatsapp
Chrome
Titanium Backup
Dropbox
IMDB
Swiftkey 3
Viber
Twitter
Superuser
I have also tried the last 3 Siyah Kernels and pretty much the same battery life of about 14 hours max with between 2-3 hours of Screen on time before the battery dies to 0%!
In BBS there is about a 20% Kernel Wakelock constantly and about 8% Partial wakelock resulting in CPU Spy showing the phone never gets into more then about 82% deep sleep!
So simple question, what type of battery life are others getting with similar setups as I am starting to wonder if my S2 is actually faulty only getting 14 hours?
Thanks to all that take the time to reply...
Reni10 said:
There are loads of battery threads(almost too many to get any useful info out of!) but I just wanted to check that there is not actually something wrong with my Galaxy S2 in regards to battery life so can someone please let me know what the expected battery life is when running the following:
CM9.1 Stable
CM9 stock Kernel
BVP7 modem
I have the following apps installed along with the standard gapps:
Facebook
Flipboard
BBS
CPU Spy
Flipboard
Whatsapp
Chrome
Titanium Backup
Dropbox
IMDB
Swiftkey 3
Viber
Twitter
Superuser
I have also tried the last 3 Siyah Kernels and pretty much the same battery life of about 14 hours max with between 2-3 hours of Screen on time before the battery dies to 0%!
In BBS there is about a 20% Kernel Wakelock constantly and about 8% Partial wakelock resulting in CPU Spy showing the phone never gets into more then about 82% deep sleep!
So simple question, what type of battery life are others getting with similar setups as I am starting to wonder if my S2 is actually faulty only getting 14 hours?
Thanks to all that take the time to reply...
Click to expand...
Click to collapse
I get 2,300 hours only of battery backup with those settings.
Actually, what's the meaning of this thread?
I think that's the average battery life with CM9, but we can't really tell cause we all have different types of usage
Did you let the kernel/rom settle so you could get the best out of it?
Sent from my GT-I9100 using xda premium
S2 i9100 cm9 9.1.0 stock kernel xxlpw
Batt with low brightness and almost no use of the phone 22 hours!
With use of the phone low brightness using apps 14 hours
Low brightness and heavy use of the phone 5 hours
Sent from my GT-I9100 using xda premium
I see some people posting saying they can get 5 hours of screen on time and 2 days from the battery but mine would never be able to get that so is my phone faulty?
Sent from my GT-I9100 using xda app-developers app
Reni10 said:
I see some people posting saying they can get 5 hours of screen on time and 2 days from the battery but mine would never be able to get that so is my phone faulty?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
NO. Your phone is not faulty.
We all use our phones differently, we have different configurations etc.
Reni10 said:
There are loads of battery threads(almost too many to get any useful info out of!) but I just wanted to check that there is not actually something wrong with my Galaxy S2 in regards to battery life so can someone please let me know what the expected battery life is when running the following:
CM9.1 Stable
CM9 stock Kernel
BVP7 modem
I have the following apps installed along with the standard gapps:
Facebook
Flipboard
BBS
CPU Spy
Flipboard
Whatsapp
Chrome
Titanium Backup
Dropbox
IMDB
Swiftkey 3
Viber
Twitter
Superuser
I have also tried the last 3 Siyah Kernels and pretty much the same battery life of about 14 hours max with between 2-3 hours of Screen on time before the battery dies to 0%!
In BBS there is about a 20% Kernel Wakelock constantly and about 8% Partial wakelock resulting in CPU Spy showing the phone never gets into more then about 82% deep sleep!
So simple question, what type of battery life are others getting with similar setups as I am starting to wonder if my S2 is actually faulty only getting 14 hours?
Thanks to all that take the time to reply...
Click to expand...
Click to collapse
You're expecting people to have the same apps and use the device the same way as you.. and then on top of that, find this thread and tell you how long their battery lasted??
I think that is VERY unlikely. Plus, there are already soo many battery threads, you just have to search for them. Good Luck.
Last I used, fb was a battery hogger. What about wake locks? Any major partial and/or kernel wake locks? The stock CM9 kernel is not so customizable, check out fluxii kernel or siyah..... 4-5 hours of screen time is possible, I'll link you to a thread that will help you save battery.
Edit: here is a thread from which I was surprised that my battery could do what I thought it couldn't.
http://forum.xda-developers.com/showthread.php?p=21851909 I followed the CM9 + siyah magic configuration.
Sent from my GT-I9100 using Tapatalk 2
Lots of apps that need sync don't help... betterbatterystats will also tell you if any apps are misbehaving.
Also checking the voltage of your battery to see of its faulty may prove rewarding.
Sent from my GT-I9100 using xda premium
Spiralzz said:
Last I used, fb was a battery hogger. What about wake locks? Any major partial and/or kernel wake locks? The stock CM9 kernel is not so customizable, check out fluxii kernel or siyah..... 4-5 hours of screen time is possible, I'll link you to a thread that will help you save battery.
Edit: here is a thread from which I was surprised that my battery could do what I thought it couldn't.
http://forum.xda-developers.com/showthread.php?p=21851909 I followed the CM9 + siyah magic configuration.
Sent from my GT-I9100 using Tapatalk 2
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I have tried the latest Siyah(with the config in the thread!) and Fluxii kernels now as well and still no where near 4-5 hours screen time!
The most I can get it about 2-3 hours screen time and about 14 hours of total battery time!
Right now after a full charge I seem to have lost 31% in 4 1/2 hours with 35 mins of Screen on time!
BBS is not really helping as it is saying i have 3% kernel wakelocks and 2% partial wakelocks but I cant seem to do anything about them after reading BBS threads for days!
I cant really believe that you have to do all this just so your phone can run for maybe 18 hours without going flat as coming from an iPhone4 I was able to get 2 days out of my phone before i needed charging so very disappointed in the S2 battery life.

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