Database Users

Battery problems

Hi, my s2 is using villainrom 1.4 as an attempt to improve battery life. At the moment i am on 50% battery after 4 hours and a bit with screen on time at 2 hours. Even with moderate usage i hav never gotten over 12 hours...
Could someone give me tips how to get my battery to at least a day, desperate for help. I have auto sync off and use a mixture of wiki and 3g.
I will post the screenshots of battery later as i dont have enough posts yet.
Thanks
Sent from my GT-I9100 using XDA App

What apps u have installed?
Go to the built in battery monitor and check for wakelocks (when the screen is off, but the device is awake)
Sent from my GT-I9100 using Tapatalk

as what BSAKSOUK said, what apps do you have installed?
Try to uninstall all apps you have installed and see if you get some improvements, then install one, test again.
I found that NetCounter kicked in on my SGII and the phone never went to sleep, just screen off but it was awake and drained the battery in 12h
//Mike

I will try and post the sreenshots soon. It seems that awake and screen on is largely related. I may have to factory reset and see how the battery fairs then.
I did a *#1234# and saw my csc is unknown? Do u think there is somethin wrong with my modem? It seem when wifi is on it always drains the battery alot faster.
Ia there any app to monitor how much drain apps cause? Thanks guys
Sent from my GT-I9100 using XDA App
@EDIT: Adding images -since i cannot add normally ... please add the http yourself img28.imageshack.us/img28/2675/sc20110714124050.jpg
img836.imageshack.us/img836/6192/sc20110714124035.jpg

Their are a number of battery tips in the VR rom thread worth reading .
jje

Use Advanced Task Killer. Nuff said
Sent from GT-I9100

Deactivate data network mode

Im trying to go through the vr thread but its extremely long!
Deactivating data mode? Ive read about some people having wifi issues causing battery drain.
Thanks
Sent from my GT-I9100 using XDA App

twitceh said:
Hi, my s2 is using villainrom 1.4 as an attempt to improve battery life. At the moment i am on 50% battery after 4 hours and a bit with screen on time at 2 hours. Even with moderate usage i hav never gotten over 12 hours...
Could someone give me tips how to get my battery to at least a day, desperate for help. I have auto sync off and use a mixture of wiki and 3g.
I will post the screenshots of battery later as i dont have enough posts yet.
Thanks
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
since you say you had the screen on for 2 hours, your battery seems correct. other people on this forum are claiming they get 4 hours of screen on time from a full charge. so if you had 2 hours and 50%, that seems right in line with proper results.

LPY with extremely crap battery life?

Guys, I just updated my note to official LPY with root. The installation was smooth, also reinstalled all my apps.
It's the same set of apps I used and I had been careful in disabling the background sync.
Woke up at 9am fully charged, then completely dry at 5pm, not even intensive use.
Anyone else see yhe same problem?
Sent from my GT-N7000 using XDA

http://forum.xda-developers.com/showthread.php?t=1649041&page=7
join this discussion, you are not the only one^^

i am on official with cf root kernel and been on for 13 hours with 11% used. superb battery life for me

LPY with CF rooted kernel, 3h of voice call, wifi always on, auto mail check every hour (3 accounts), ebook/comics reading.
1 day and 9 hours on battery and still have 31% left. Not bad for me, round 2% per hour.

Surprisingly that airplane mode -> turn off phone -> pull battery -> turn on phone -> disable airplane mode trick worked for me. Also the pull battery part was essential for no idea what reason.
Now after almost 4 hours intensive use I still have 70%, kinda meets my expectations now.
Sent from my GT-N7000 using XDA

Carysyd said:
Surprisingly that airplane mode -> turn off phone -> pull battery -> turn on phone -> disable airplane mode trick worked for me. Also the pull battery part was essential for no idea what reason.
Now after almost 4 hours intensive use I still have 70%, kinda meets my expectations now.
Sent from my GT-N7000 using XDA
Click to expand...
Click to collapse
This is one thing everyone should try...the other thing is (as always): Use the ROM for a week or so! Load and reload it a few times (100% - ~5%)...the battery has to "settle" every and each time you flash a new rom.

mine seems fine. been sitting next to me for the last 4 hours and so far it has lost about 3%

I am also having a horrific battery life. It was much better with both stunner and cm9. I am trying to go back but not sure how to. Dont want to flash anything and brick my phone.
Sent from my GT-N7000 using xda premium

In my hands, the airplane mode trick works, but toggling the energy saving menu restores the no-deep-sleep battery drain state.
Connecting and disconnecting from external power or car dock doesn't seem to precipitate the drain, instead.
Please try yourself to confirm.... In this first ics firmware, knowing what to do to make it work at best is of great importance.
Sent from my GT-N7000 using xda premium

lpy for me not rooted this time if i need root i use the temp one the battery is fantastic

It's not only the crappy battery life.. try opening a folder (Nova Launcher, Apex, Trebuchet - doesn't matter) that contains more than 8 icons... LAGGY AS HELL. kinda miss the chinese leak

Try this one - http://forum.xda-developers.com/showpost.php?p=26088090&postcount=86

Im actually having the same issue with battery life. Was using miui and other ics roms with great battery life.
Im assuming its a rouge app or service. But i had 15% drain overnight from 1am-730am and thats not normal when device is not being used.
Sent from my GT-N7000 using xda premium

intruda119 said:
But i had 15% drain overnight from 1am-730am and thats not normal when device is not being used.
Click to expand...
Click to collapse
If i were you I'd install Cpu Spy from the market and watch if your note goes into deep sleep atall...

Thread Closed​
We only need one thread on this subject.​

note on steriods???

i just noticed this morning after unplugging my note that even though my note is going into deep sleep the battery drain is still way too much as compared to the previous day...
i checked cpuspy and at first didn't register anything odd except that it goes into deep sleep.. after a second glance only then i realized that instead of running at 200mhz my note was running at 1000mhz during charge..
has anyone here experienced this before?? although i noticed that it seems to be a lot snappier now
i just can't help but worry what lasting damage it may be doing to the processor... and the fact that even though it goes into deep sleep i'm losing about 5% of juice for every 15-20 mins.
see screenshots below. the first was when i unplugged it from the charger and the second... after going to deep sleep

see screenshots
sorry forgot to attach screenshots

scarlet_sg said:
i just noticed this morning after unplugging my note that even though my note is going into deep sleep the battery drain is still way too much as compared to the previous day...
i checked cpuspy and at first didn't register anything odd except that it goes into deep sleep.. after a second glance only then i realized that instead of running at 200mhz my note was running at 1000mhz during charge..
has anyone here experienced this before?? although i noticed that it seems to be a lot snappier now
i just can't help but worry what lasting damage it may be doing to the processor... and the fact that even though it goes into deep sleep i'm losing about 5% of juice for every 15-20 mins.
see screenshots below. the first was when i unplugged it from the charger and the second... after going to deep sleep
Click to expand...
Click to collapse
Try restarting and see it is softens up
Sent from my GT-N7000 using xda premium

tried it... even did a hard reset by pulling battery out... still the same...
now clueless on what next...

See what processes are running. And kill some unneccessary ones?
Sent from my GT-N7000 using XDA

scarlet_sg said:
tried it... even did a hard reset by pulling battery out... still the same...
now clueless on what next...
Click to expand...
Click to collapse
ANy new apps that u installed recently ?
Normally , rogue process is going to call an abnormal battery drain ,,,download some sort of process,app moniter and see which process is running and taking most of the CPU time......My guess is that it has to be one of the apps that you have installed or started which is causing this

That was what I thought initially but I don't remember installing anything these past few days as I just froze a few bloatware and was monitoring the device for any issues.
The last thing I remember changing was some setting under the development concerning background process.
Hmmmn. Maybe I'll put it back and see.
Really appreciate the help guys. I'll keep you updated.
Sent from my GT-N7000 using XDA

Kernel and rom version pleeez
Sent from my GT-N7000 using Tapatalk 2

scarlet_sg said:
The last thing I remember changing was some setting under the development concerning background process.
Hmmmn. Maybe I'll put it back and see.
Click to expand...
Click to collapse
this may be the reason - afair this setting kills each process after you leave it, so in readily you might have ended with a constant loop of processes being closed and then restarted by system
Sent from my GT-N7000 using xda premium

i unchecked the limiting of background process but still the same... cpu is still running at 1000mhz most of the time
i did a hard reset by turning off and pulling the battery for a few minutes... still the same although the note still goes into deep sleep but hardly uses other cpu speeds except for 1000mhz...
i tried freezing some of my apps and games, those which i suspect might have required 1000mhz to run but still the same...
i guess i'll just have to wait and see for a little while if this changes...
i'm now thinking of reverting back to GB... since the battery drain for ICS is such a let down and with this problem... i'll give it a couple more days

what ROM are you running?
anyway something in the governor seems to have changed ,your case seems to be a performance governor.
try installing set cpu and set minimum to 200 ,max to 1400 ,and the governor to "on demand"
should fix things for you

IM on stock Ics lp9. I haven't root yet after I upgraded ota.
Set CPU requires root ain't it?
Sent from my GT-N7000 using XDA

scarlet_sg said:
IM on stock Ics lp9. I haven't root yet after I upgraded ota.
Set CPU requires root ain't it?
Sent from my GT-N7000 using XDA
Click to expand...
Click to collapse
yes it does ,but if you're not rooted then the governor couldn't possibly have changed by you !!
could it be a bug in lp9? I heard that ICS have some battery issues
how long were you running LP9 before noticing this issue?

Well, havent heard it from that rom. Bring it back
Sent from my GT-N7000 using Tapatalk 2

it might be the fault of some rogue app running in background, did you check with betterbatterystats?
Sent from my GT-N7000 using xda premium

I was using lp9 for about 2 Weeks after I started noticing the CPU usage
Couldn't find a fix so I reverted back to rooted lc2 GB
With all the issues with Ics - battery drain, fc's and mmc bug and now this CPU overclocking felt it wasn't worth it.
Now the note is sleeping like a baby. Battery is back to its efficient self. I'm getting 3 days on one full charge.
Will just wait for an update on official Ics.
Appreciate all the help guys.
Sent from my GT-N7000 using XDA

Battery drain

Hello!
I rooted my phone as of yesterday, I charged it all night and when I took it off today the battery went from completely full to dead withint 3 hours of no use. I did not use the phone at all.
Any ideas?

If you just rooted your phone, you should not have battery drain... Try to temporarily disable root (with Voodo OTA RootKeeper for exemple)

Use better battery stats to nail down which app is causing the drain

Did you try wiping your battery stats in CWM - advanced?
There's also an app, Battery Calibration, on the Play Store that may help with that.
Not uncommon to get weird battery readings after changing rom's or rooting.

slaphead20 said:
Use better battery stats to nail down which app is causing the drain
Click to expand...
Click to collapse
+1 that app will tell you exactly what's bogging down your cpu, and which apps prevent proper deep sleep mode.
Sent from a galaxy far, far away

PermaFried said:
Hello!
I rooted my phone as of yesterday, I charged it all night and when I took it off today the battery went from completely full to dead withint 3 hours of no use. I did not use the phone at all.
Any ideas?
Click to expand...
Click to collapse
This is soooo strange. Not a normal behavior!! Before you root your phone, how the battery lifes goes??? Are you in a stock or modified ROM? Wich kernel are you using?
I faced this issue a couple weeks ago. Android S.O was the culprit and it was driving me crazy. I was using a custom ROM (RemICS-UX). I solved the problem returning to stock and erasing everything, then i reflashed the ROM and the kernel, in my case Devil3 0.79. If you want to give it a try!!
After that my batterys life is pretty fine, during at least 2 days!
Feel free to ask anything you want! Cheers mate
Sent from my GT-I9000 using xda app-developers app

Go through a couple more full charge cycles, if android os usage isn't very high then, it should be fine.
Edit: on second thought, draining the battery without use in 3 hours is extreme, and would suggest that the CPU is running at max speed all the time. If it doesn't solve itself or improve a lot after a few more charge cycles, reflash everything.
Using GT-I9000 my sent Tapatalk 2 from.

Did you just root your phone or did you flash another ROM? Some ROMs have horrible battery life.

The stock battery usage monitor (Settings>Battery) should be enough to tell you what ate your battery. If it's a particular app you're running, try disabling that and see if it improves. If the usage is mostly "Android System", "Mobile standby", or something like that, then you have a tougher problem. The free app CPU spy will let you know if something is keeping your CPU usage high. Better battery stats is pretty cheap and will give you much more specific information.

+1s for BetterBatteryStats and waiting a few charge cycles before judging/debugging your battery drain, especially if you changed your kernel to root or flashed a rom.
I find that after flashing a new rom or kernel my phone, the battery level shown in recovery mode is higher than in the rom's settings, for a couple days. (You can see batt level in semaphore's recovery). I once dud a lazy search about this and found nothing, but I figure that's what is meant about waiting a few cycles gir your battery to calibrate.
sent from a telephonic device

groksteady said:
+1s for BetterBatteryStats and waiting a few charge cycles before judging/debugging your battery drain, especially if you changed your kernel to root or flashed a rom.
I find that after flashing a new rom or kernel my phone, the battery level shown in recovery mode is higher than in the rom's settings, for a couple days. (You can see batt level in semaphore's recovery). I once dud a lazy search about this and found nothing, but I figure that's what is meant about waiting a few cycles gir your battery to calibrate.
sent from a telephonic device
Click to expand...
Click to collapse
or u can just use the app batterycalibration after flashing a new rom

Friend try with this modem..
http://forum.xda-developers.com/showthread.php?t=993576#

TheWeeknd said:
or u can just use the app batterycalibration after flashing a new rom
Click to expand...
Click to collapse
There's no such thing as "calibrating your battery". It's a myth. Wiping your battery stats file doesn't do anything other than reset the tracking of what's using power. It doesn't magically fix your battery meter. Flashing a new ROM doesn't leave left over data, again a myth.
Battery life is never consistent after flashing because your ROM needs to "settle" for a day or two first and during that time your ram and cpu usage are all over the place.
The rest is a placebo effect.
Sent from a galaxy far, far away

Idea
I think I may know what is happening to you as of now. Try to bring up the Battery settings if you are on ICS and take a screenshot and post it here. If my 'spider' senses are correct, your phone did not go to 'sleep' and remained awake.
Since I can't put my signature for unknown reasons...(Maybe because I just created an account since I did not want my old one)
Please donate to [email protected] (html not allowed yet) on Paypal if I helped you

Currently I'm experiencing a huge battery drain too. I used both tools which where mentioned here in this thread and when the drain occours, CPU spy reports that my SGS didnt go in deep sleep at all with turned off display, it was at least at 100mhz all the time! I attached 2 logs from better battery stats and it seems like the NotificationService is causing it?
I'm using JW6 PDA JW4 Modem and JVC CSC in combination with the MNGB 0.5.8 Kernel.

Definitely, now you got to find out what is causing it!

Deleted

n00b here, need help with battery issues

Hi there; this is my first post so please go easy on me.
Bought a Nexus 4 which is my first Android device, but the battery life is bugging the hell out of me. Surely the screen should always be at the top, right? I left it to sleep overnight on a full charge to find that it had shot down to 60% when I woke up at 7 this morning.
I haven't rooted or flashed or anything like that, because as I said, I'm an Android virgin. I have location settings off, only Gmail syncing and the usual push notifications here and there. Nothing too fancy or strenuous.
Any help on how I can go around fixing this? I'm a little afraid to rooting/flashing/ROMs etc, because I've no clue what works best.
Cheers!

If your saying you left the screen on over night, meaning the phone never went into deep sleep.. If you slept for let's say 6 hours and the phones screen was on for that whole time it's normal that it went down to sixty percent battery.
Maybe I'm understanding your post wrong? Btw I cannot see the picture you posted.
Sent from my SGH-T999 using xda app-developers app

Turn off mobile data and lower the screen brightness to 0 during the day. Also disable WiFi when you're sleeping. I also make sure all apps are closed using the app manager button on the far right.
Mine's been fine following this logic.

Oh sorry, I should meant sleeping overnight, whilst I slept cosily in my bed.
I'll reattach the image in a second

Ah, you won't be able to see any links till I've gone past 10 posts. Back in a bit then, ha.

atw1927 said:
Ah, you won't be able to see any links till I've gone past 10 posts. Back in a bit then, ha.
Click to expand...
Click to collapse
lol I see it now.. try performing a reset, android shouldn't be that high.. are you rooted? custom rom/kernel?

Crisisx1 said:
lol I see it now.. try performing a reset, android shouldn't be that high.. are you rooted? custom rom/kernel?
Click to expand...
Click to collapse
This is NOT the answer. His battery in the image has dropped 7%. If he hasn't used the screen much it is perfectly understandable that screen might not be a large percentage of that 7%. As he uses the phone more screen will use a larger percentage of his battery and Android OS will use less.
If he gets to the point where the screen is on for an hour or two and the percentages are still like this then yes there is a problem.
Sent from my Nexus 4 using Tapatalk 2

joshnichols189 said:
This is NOT the answer. His battery in the image has dropped 7%. If he hasn't used the screen much it is perfectly understandable that screen might not be a large percentage of that 7%. As he uses the phone more screen will use a larger percentage of his battery and Android OS will use less.
If he gets to the point where the screen is on for an hour or two and the percentages are still like this then yes there is a problem.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
My android system has never been that high, regardless if I used the phone for 10 minutes or 10 seconds , or not at all.

atw1927 said:
Hi there; this is my first post so please go easy on me.
Bought a Nexus 4 which is my first Android device, but the battery life is bugging the hell out of me. Surely the screen should always be at the top, right? I left it to sleep overnight on a full charge to find that it had shot down to 60% when I woke up at 7 this morning.
I haven't rooted or flashed or anything like that, because as I said, I'm an Android virgin. I have location settings off, only Gmail syncing and the usual push notifications here and there. Nothing too fancy or strenuous.
Any help on how I can go around fixing this? I'm a little afraid to rooting/flashing/ROMs etc, because I've no clue what works best.
Cheers!
Click to expand...
Click to collapse
Actually No the "Screen" should not always be at the top of the stat list. If you use the phone more than it idles, then yes... but if you are like me, mine says "Phone Idle: 20%" (which is on top) and "Screen" is 4th on the list with 12% (Wi-Fi and Cell standby above it) [this is my personal phone, and I mostly use my work phone. hence the high Idle & standby]
I was having an issue with my phone running out of battery, with very little usage from it. I mean very little, I might make 2 calls from it each day, and respond to an email now and then. I found that an App was preventing my Screen from going into "Deep Sleep" or even "Sleeping" possibly. So I uninstalled all apps (well I only had like 4 additional apps installed), except for 2 that I need (Google Voice & Drive). Powered off the phone, charged it fully, then powered back on. Its been running on the same charge for 24+hrs now and reads 68% battery remaining.
So check the apps you have installed, some use background data, and might be causing problems...

Crisisx1 said:
My android system has never been that high, regardless if I used the phone for 10 minutes or 10 seconds , or not at all.
Click to expand...
Click to collapse
And your phone is the definitive guide for what Android OS usage is? Maybe his phone woke up those services for a period of time longer than normal.
The answer of "lol looks wrong root and install kernel" is terrible advice when so little information is given.
Sent from my Nexus 4 using Tapatalk 2

What else would you like to know?

atw1927 said:
What else would you like to know?
Click to expand...
Click to collapse
A longer battery graph would help a lot. If yuppy want top search XDA there is a free app called better battery stats that will help you diagnose if something is running in the background eating battery or even if your phone I'd properly entering deep sleep.
Sent from my Nexus 4 using Tapatalk 2

Better Battery stats and battery screenshots here

atw1927 said:
Better Battery stats and battery screenshots here
Click to expand...
Click to collapse
See now it is much easier to see that you actually do have a problem and what it is. You have the wakelock problem as you can see from Better Battery Stats which falls under Android OS on the other screen. It also appears that you have somewhat weak signal which could cause the wakelock to drain battery even more. There's not much you can do about that wake lock, some kernels have patches for it but those have their own issues as well.
Sent from my Nexus 4 using Tapatalk 2

Could I just install any kernel on stock android and be OK with it? As I've said I've no idea what's best for me; just something nice and clean that doesn't have issues like this. I live onsite where I work so my WiFi is pretty much on all the time if that helps in anyway whatsoever
I'm gonna let it run down completely tonight and charge it, but I don't expect it to help much.

joshnichols189 said:
And your phone is the definitive guide for what Android OS usage is? Maybe his phone woke up those services for a period of time longer than normal.
The answer of "lol looks wrong root and install kernel" is terrible advice when so little information is given.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I never told him to install a kernel. The advice I gave is to do a reset then I asked if he was rooted or running a custom rom or kernel because that might of been the problem.
Sent from my SGH-T999 using xda app-developers app

Bump

Fully charged overnight, battery still sinking like a ship. 45 minutes and I'm already down to 94% already!
Idiot question; will installing a kernel just solve this? For now as a new guy I'd like to keep it as stock as possible before fiddling with it.

atw1927 said:
Fully charged overnight, battery still sinking like a ship. 45 minutes and I'm already down to 94% already!
Idiot question; will installing a kernel just solve this? For now as a new guy I'd like to keep it as stock as possible before fiddling with it.
Click to expand...
Click to collapse
The battery on the n4 seems horrible.
I'm completely stock I just got my phone yesterday, I charged it to 100% now its at 64% battery with only 47 minutes of screen on time.
on the s3 I would be around 83% with 47 minutes of screen on time.
I'm gonna unlock the boot loader and root soon and try Franco kernel I've been reading good things about it.
Sent from my Nexus 4 using xda app-developers app

The battery life on the stock kernel isn't great because the CPU management isn't optimized well. It ramps up the CPU (frequency, number of active cores...) very easily and keeps it there long, which removes the occasional lag but sucks more battery. Flashing a more battery friendly kernel would definitely help you if that is the root of your battery issues and not a badly coded app.
Franco's kernel is a very popular one, and very battery friendly compared to stock (and that doesn't mean you lose performance). It is the one I'm currently using. Most people report of screen on times of 4 or 5 hours. With not so heavy usage and wifi (not 3g) I can also pass 5 hrs.
To install a kernel you need to unlock your boot loader and install a custom recovery. No need to root, but.. why not since you're at it
You can try different kernels with the stock ROM. You don't necessarily need a custom ROM. Just be careful to read the dev's OP and instructions, and definitely not to flash a kernel for another device.
Also another thing that reduces battery is your mobile data, if there are a lot of programs that sync on the background. You can use a program that turns off your mobile data when your screen is off and switch it back on just for a sync every xx minutes. Juice Defender is such app, though I like to use Tasker for that. If you use Tasker and are interested in that project, ask or send me a pm. It works great.