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Poor battery life (w/ cm6 8/25, kernel #8 and batt tweak)

I'm having a hard with my battery. I just can't make it last more than 6 to 7 hours. Im trying everything. Can anyone post some advices please.
Sent from my HERO200 using XDA App

gurusux said:
I'm having a hard with my battery. I just can't make it last more than 6 to 7 hours. Im trying everything. Can anyone post some advices please.
Sent from my HERO200 using XDA App
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Click to collapse
I was having issues until I did the following......(and I am on the same build as you)
Go into recovery and wipe the dalvik cache. Reboot.
Set the automatic screen tweak under CM settings/user interface
These two things have seemed to make a pretty big difference. I am not running any tweaks or anything and with moderate use (some wifi, 10-15 emails, 4-5 texts, gmail sync) I am at 89% after three hours off the charger. While this isn't great (IMO) it is lots better than I have been getting. Hope that helps.

I had the same issue, but with only 3 hours of life between full charges, and one phone call for 15 mins.
I reverted back to 8/24.

Smolck you mean the automatic back light right?
I wiped kalvic cache... ill see how it goes without batt tweak and no apps running.
Sent from my HERO200 using XDA App

gurusux said:
Smolck you mean the automatic back light right?
I wiped kalvic cache... ill see how it goes without batt tweak and no apps running.
Sent from my HERO200 using XDA App
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Click to collapse
Yea. I just set it to what I thought were "power saving" settings. It seems the Dalvik cache is what did the main thing to help. All I can say is that I am still over 80% and I have been off charge since 7:00am CST. And this 8/25 build is SMOKING fast on my phone

It is fast. Its even faster with launcher pro.
Are you using the batt tweak? Which kernel?
Down from 55% to 50% in 75min
Sent from my HERO200 using XDA App

gurusux said:
It is fast. Its even faster with launcher pro.
Are you using the batt tweak? Which kernel?
Down from 55% to 50% in 75min
Sent from my HERO200 using XDA App
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Click to collapse
Stock kernel (what comes with the .zip) and no tweak.

Can someone do an analysis of my current battery usage and tell me what I need to do? Me hero won't even last half a day.
Sent from my HERO200 using XDA App

jinwu57 said:
Can someone do an analysis of my current battery usage and tell me what I need to do? Me hero won't even last half a day.
Sent from my HERO200 using XDA App
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Click to collapse
That screenshot isn't enough info. But go to settings/about phone/battery use and you will get a better idea of what is using the most power.

From 100 to 90% in 2 1/2 hours now. That's pretty good right? Stock 8/25 kernel w no tweak. If it keeps working ill backup and add other stuff and see
Sent from my HERO200 using XDA App

Well I think its fixed. Managed 13 hours and still 35% left using Google maps and Pandora plus regular use. Running the same configuration.
Sent from my HERO200 using XDA App

Battery drain/best ICS Rom regarding battery life

Hey, I started using this ICS Rom (the AOKP version), comming from overcome
http://forum.xda-developers.com/showthread.php?t=1697589
I have a major battery drain. Like 50% in 10 hours without using the tab. Any ideas how that can be?
Also is there a custom ICS Rom which is known for its good battery life?
Thanks.

CM9 drain off battery too fast too... Maybe ICS isn't optimized for our tab...

Yes, but that seems like a lot to me... I am thinking about switching back to Overcome, I cannot take my tab with me anymore with this battery consumption.

roter$baron said:
Yes, but that seems like a lot to me... I am thinking about switching back to Overcome, I cannot take my tab with me anymore with this battery consumption.
Click to expand...
Click to collapse
Install CPU spy to see if your CPU is going into deep sleep.
Sent from my GT-P1000

I installed CPU spy... Tab used deep sleep mode about 80%, but battery goes off too fast...

salahmed said:
Install CPU spy to see if your CPU is going into deep sleep.
Sent from my GT-P1000
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How should I do that? I mean, do I run the app and then simply leave some time?
EDIT: The tab does not go into deep sleep. Does that mean I have a wakelock? How can I find out, what is keeping the tab awake?

roter$baron said:
How should I do that? I mean, do I run the app and then simply leave some time?
EDIT: The tab does not go into deep sleep. Does that mean I have a wakelock? How can I find out, what is keeping the tab awake?
Click to expand...
Click to collapse
Install ''BetterBatteryStats'' from play store and see what is causing the wake lock.

salahmed said:
Install ''BetterBatteryStats'' from play store and see what is causing the wake lock.
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Click to collapse
I don't know if this is something: com.google.android.location woke up 515 times, but i can't find it in titanium backup to freeze it.

roter$baron said:
Hey, I started using this ICS Rom (the AOKP version), comming from overcome
http://forum.xda-developers.com/showthread.php?t=1697589
I have a major battery drain. Like 50% in 10 hours without using the tab. Any ideas how that can be?
Also is there a custom ICS Rom which is known for its good battery life?
Thanks.
Click to expand...
Click to collapse
try the latest kernel from humberOS for ICS,,
i don't have any issues with battery life since i used that kernel (latest)

asvantypography said:
try the latest kernel from humberOS for ICS,,
i don't have any issues with battery life since i used that kernel (latest)
Click to expand...
Click to collapse
could I get a link?

I don't know how I did it but the tab is now on 125 Mhz when I don't use it. However, CPU Spy says that it does not go into deep sleep. How can that be and what is the difference between deep sleep and simply going to the lowest CPU frequency?

Cm9 stable release without gapps install is giving me battery backup almost same as overcome.no more over heating,lags or bugs.perfect build.
nightly build cause overheating n fast drainage in my tab. however didnt try latest versions as after stable release i didnt flash any other rom.my main concern use to be battery life so always come back to gb.bt now 2.3 is outdated for me.
Sent from my GT-P1000 using xda app-developers app

salahmed said:
Install CPU spy to see if your CPU is going into deep sleep.
Sent from my GT-P1000
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Click to collapse
i installed cpu spy in my tab..
it display deep sleep under unused cpu..why it happen? i install betterbatterystats...almost all process less than 2% used

Run betterbatterystats for a few hour and post the screen capture here for kernel wake locks and partial wake locks.
Maybe we can help.
Saying less than 2% doesn't mean much.
Sent from my GT-P1000 using xda app-developers app

priyana said:
Run betterbatterystats for a few hour and post the screen capture here for kernel wake locks and partial wake locks.
Maybe we can help.
Saying less than 2% doesn't mean much.
Sent from my GT-P1000 using xda app-developers app
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Click to collapse
this is the screen shots

I mean take it out of charger and run for few hours.
Yours seems to be freshly unplugged?
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priyana said:
I mean take it out of charger and run for few hours.
Yours seems to be freshly unplugged?
Sent from my GT-P1000 using xda app-developers app
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same thing also after few hours...just the counter increases...
I understand it is really somewhere around setting counter panel

If it us really NetworkStats, from my own experience, it was bad modem.
What is your baseband showing.
You may need to replace the modem.
Sent from my GT-P1000 using xda app-developers app

priyana said:
If it us really NetworkStats, from my own experience, it was bad modem.
What is your baseband showing.
You may need to replace the modem.
Sent from my GT-P1000 using xda app-developers app
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Click to collapse
huh? baseband version is unknown
how to replace modem?

We nail the problem then.
In the dev forum, there is a sticky thread called modems.
Get one, maybe jpz.
Unpack it, copy the modem.bin to /radio/modem.bin
Reboot, check baseband.
Sent from my GT-P1000 using xda app-developers app

Is this normal battery drain?

Hey guys I get good battery when the screen is off. But whenever I use it, it seems like it drops pretty rapidly.
What do you think?
Cm 10 preview 4
Hydracore kernel
Sent from my GT-N7000 using xda premium

Sorry I forgot to upload the screenshot

barretp said:
Hey guys I get good battery when the screen is off. But whenever I use it, it seems like it drops pretty rapidly.
What do you think?
Cm 10 preview 4
Hydracore kernel
Sent from my GT-N7000 using xda premium
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Click to collapse
Depends on what you did during that period.. If the processor was running at MAX frequency the entire time, yes thus might be normal.. Also as I notice from the screenshot, the screen is always in in that time frame.. So you deduce from this
--
Sent via XDA Premium from SGS II

barretp said:
Hey guys I get good battery when the screen is off. But whenever I use it, it seems like it drops pretty rapidly.
What do you think?
Cm 10 preview 4
Hydracore kernel
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
No. It's broken. You should send it to me.

Hi,
Thats an abnormal drain. Try restarting your phone and seeing if the problem persists. Also note that the ROM you are using is still under testing and not a finished product so might experience some difficulties. Consider shifting to a more stable ROM if problem persists.
Having said that, battery drain will depend quite a lot on what apps you have running in the background and your settings.
Best way to analyse the situation is by installing an app called 'Better battery stats'. Its by a XDA member and if i'm not mistaken he offers it on XDA as free download. Try to see what is causing partial wakelocks and kernel wakelocks (your phone should be on deep sleep mode for the majority of time). Try to see what MHz is your processor running at (it shouldnt be in the 1400 range for too long unless you are playing some heavy duty games)
Also try to search for threads on 'wakelocks' on XDA to get more details on this subject.
I have experienced close to 10% drop in 1.5 hr in stock ROMs and around 15% in five hours on CleanNote ROM in idle states with lots of background apps disabled.

Battery life

I'm having troubles with my battery, it drains too fast! I've used battery calibration tools, I deinstalled samsung push notifications, I'm using juice defender, screen brightness is around 30-40%, but the battery still gives me about 2-3 hours of screen time, or if I don't use the phone that much, still drains to 10-20% by the end of the day. Any suggestions, please!
Sent from my GT-I8190 using xda app-developers app

well,the battery problem in my case was the Dropbox app...it was keeping my phone awake all the time and the battery lasted 20-22hours tops...
i uninstalled it,restarted it and all came back to normal and by normal i mean 2 days of medium usage,sometimes even 3 days...the battery drainage overnight(6-8hours) is between 3-5% (with wifi and 3g off)...
so,im pretty new to this android world,but check out your 3rd party apps,maybe some of them is keeping your phone away from going into deepsleep when you dont use the phone...cheers

Thanks alot, how can I check when my phone goes to deepsleep?
Sent from my GT-I8190 using xda app-developers app

Calculating Infinity said:
Thanks alot, how can I check when my phone goes to deepsleep?
Sent from my GT-I8190 using xda app-developers app
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as i mentioned im fairly new to android world, but if u got to settings>battery and click on the graphical picture,below the graphics that shows the battery usage,you will see info about GPS-on,Wi-Fi,Awake,Screen On and Charging...my guess is that "Awake" should not be full blue bar all the way, since when you dont use the phone it should not be awake all the time...
at least this was my case with my Dropbox app,but i dont know about you...if your phone was OK for some period of time then it suddenly changed its behavior,then i guess you should ask yourself which apps you have installed lately,maybe some of them is causing this...uninstall the latest apps,restart your phone and see if that changes your phone back to normal(you can always install those apps back if this doesnt solve it)...

Get the betterbatterystats app to get accurate battery readings as the built in one doesn't work very well.
Disable all push notifications not just samsung. Facebook, WhatsApp, skype, Gmail even xda and tapatalk.
http://forum.xda-developers.com/showthread.php?t=2175059 Greenify that ****, so your phone can sleep (you will not receive notification when apps "hibernate"), get golden kernel by lupohirp for pegasusq governor and use" noop" settings for better read only memory usage. Use a jet black background image for super AMOLED screen, and finally.. Stop downloading crap! Keep your internal memory clean for better processor and swap file utilization. Hope this helps.
Sent from the dark side using my gt-I8190

iKlutz said:
Get the betterbatterystats app to get accurate battery readings as the built in one doesn't work very well.
Disable all push notifications not just samsung. Facebook, WhatsApp, skype, Gmail even xda and tapatalk.
http://forum.xda-developers.com/showthread.php?t=2175059 Greenify that ****, so your phone can sleep (you will not receive notification when apps "hibernate"), get golden kernel by lupohirp for pegasusq governor and use" noop" settings for better read only memory usage. Use a jet black background image for super AMOLED screen, and finally.. Stop downloading crap! Keep your internal memory clean for better processor and swap file utilization. Hope this helps.
Sent from the dark side using my gt-I8190
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Click to collapse
is golden kernel stable enough for daily use?
and is it compatible wid benzrom v4.1?
Sent From The Palm Of My Hand!!

das.dian24 said:
is golden kernel stable enough for daily use?
and is it compatible wid benzrom v4.1?
Sent From The Palm Of My Hand!!
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Click to collapse
Yes and Yes.. :good:

pedst said:
Yes and Yes.. :good:
Click to expand...
Click to collapse
tnx bro
Sent From The Palm Of My Hand!!

Only thing wrong with golden kernel is that using recovery option from power menu only restarts normally. No biggy.
Sent from the dark side using my gt-I8190

iKlutz said:
Only thing wrong with golden kernel is that using recovery option from power menu only restarts normally. No biggy.
Sent from the dark side using my gt-I8190
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Click to collapse
Thats no big deal to me..i always use the combo button to go to recovery.
got an issue after installation of golden but got solved by rebooting my device..
Sent From The Palm Of My Hand!!

Xperia V - Huge battery drain (Google Services)

My Xperia V was draining much battery while sleeping, so yesterday I flashed cm-10.1.3-RC2 hoping it could get better.
But it's still draining almost 30% in a period of 8 hours, while I'm sleeping.
I can notice a huge drain caused by Google Services and have already greenified some apps.
It can't be normal, right?! Could someone help me?
Despite this problem, now I have a really better smartphone... So, thank FXP and, please, keep supporting Xperia V. :thumbup:
Sent from my GT-I9300 using xda app-developers app

Not sure if this question belongs to be an own thread...but ok. here we go.
from my experience with Cm i can tell you, if you want better battery life, then you maybe should use a stock firmware!
I used CM and AOKP some weeks before, but the battery drain wasnt normal, not to say horrible.
But this is my experience. You should ask in your CM-Rom Thread, or CM Q/A Thread i think.

I'm a new member and I couldn't ask this in CM thread
I understood what you've said, but even using stock rom I was having that percentage of draining at night...
Do you have a Xperia V?
Could you (or someone else) tell me how much draining is considered normal in the period I've mentioned before?
Sent from my GT-I9300 using xda app-developers app

30% in 8 hours means that on average your battery will last a day.
That is perfectly normal.
Also, if you keep flashing stuff and installing apps then it drains battery quicker. Leave it alone for a week and see if it settles down.

Sorry, i have a Xperia T.
in the xperia T thread of tilals unofficial CM build (development section) someone mentions also such problems:
zandm7 said:
Seriously though this ROM is great. All that needs to be fixed are the camera bug, music wakelock thing, and heavy battery usage from Android System and Google Services and then it's basically perfect.
Sent from my Xperia T using xda app-developers app
Click to expand...
Click to collapse
So, i guess its normal? But an actual CM User can give you better report. Not using it anymore.
awww, gregbradley?
30% in 8hours sleeping? horrible....but you are right, let it settle, fmlogin

Omg, my Galaxy s3 loses only 2% in the same period while sleeping, it's a BIG difference
I had been facing this problem since I bought this phone (2 months ago), that's why I tried to flash CM yesterday... So, I think that nothing will change if I just wait...
Anyway, thank you guys...
Sent from my GT-I9300 using xda app-developers app

apologies, I didn't see that it was 8 hours while you were asleep. That is not right. But it may be because its working hard after a flash. Please leave it for a while and it should settle, or install better battery stats app (Free on xda) and see whats keeping the phone awake.
Also check what your cpu is set at and the governor, if its on performance it will be maxing out all the time..

The governor is ondemand and I didn't change the clock of cpu...
I'll install the app and come back with a screenshot, so I think it'll be easier to find some problem
Sent from my GT-I9300 using xda app-developers app

fmlogin said:
I'm a new member and I couldn't ask this in CM thread
I understood what you've said, but even using stock rom I was having that percentage of draining at night...
Do you have a Xperia V?
Could you (or someone else) tell me how much draining is considered normal in the period I've mentioned before?
Sent from my GT-I9300 using xda app-developers app
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Click to collapse
Hi,
I'm running the stock firmware. The battery drain during one night (about 8 hours) is ~ 5%.

fmlogin said:
The governor is ondemand and I didn't change the clock of cpu...
I'll install the app and come back with a screenshot, so I think it'll be easier to find some problem
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
try experiment with scheduler also.

xcyber_knightx said:
try experiment with scheduler also.
Click to expand...
Click to collapse
Is this an app?
Sent from my GT-I9300 using xda app-developers app

fmlogin said:
Is this an app?
Sent from my GT-I9300 using xda app-developers app
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Click to collapse
nope.it cpu scheduler.maybe can give another result.

larditi said:
Hi,
I'm running the stock firmware. The battery drain during one night (about 8 hours) is ~ 5%.
Click to expand...
Click to collapse
are u using Xperia V?
my XV drain ~ 30% in the stock firmware

Mavhia, can you notice an unusual consume from google services?
Good to know that this isn't happening only with my phone.
Sent from my GT-I9300 using xda app-developers app

Some screenshots.
The graphs show another problem: it is like the phone just know that lost some battery when I turn on the screen.
For example: if I leave the phone with 95%, it pass the hole night "thinking" it has this value, but when I turn on the screen the battery instantly loses around 15%, this "fast drain" stabilizes when it reaches the "real percentage".
Could it be a hardware problem? The battery itself...
Has already someone noticed something similar?
Sent from my GT-I9300 using xda app-developers app

i m facing the exact same problem .... please anyone help us out... google play serivces is draining batttery like hell and also my battery is lossing its charge like say 5% instantly ..... i have also re-calibrated battery but no luck here is battery graph for google play services i have also freezed this app in titanium backup but still drain and wake locks

Thanks for share it here too.
Except for this problem, I really appreciate this phone.
I hope someone could help us.
Sent from my GT-I9300 using xda app-developers app

fmlogin said:
Thanks for share it here too.
Except for this problem, I really appreciate this phone.
I hope someone could help us.
Sent from my GT-I9300 using xda app-developers app
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Click to collapse
ok but i have to say something..... these are two different issues..... one is that google play services is causing battery drain and wake locks and the other issue is when i turn on screen to use my phone after say 1 or 2 hour the battery level instantly drops by 5 or 6 percent..... i donno whats happening i m on stock rom

Got the same problem about 3 months ago..
I did a factory reset....back up all your apps and data,factory reset your phone if you can't find any other solutions...

fmlogin said:
Thanks for share it here too.
Except for this problem, I really appreciate this phone.
I hope someone could help us.
Sent from my GT-I9300 using xda app-developers app
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Click to collapse
MetalDaRyl said:
I did a factory reset....back up all your apps and data,factory reset your phone if you can't find any other solutions...
Click to expand...
Click to collapse
oh its a like a pain in @ ss to backup and restore all apps and games... actually i am considering to completely remove google play store and all google apps and google services to see what happens and to find the culprit..:silly: