[Q] Need assistance for battery drain - Galaxy S II Q&A, Help & Troubleshooting

Hey guys, I've been having some battery life issues with my SGS II for quite awhile now and decided to seek help now as I can't quite take charging twice a day anymore. I've uploaded the BBS as well as screen shot of the battery usage for a full drain (part 1), as well as an overnight drain (part 2). I appreciate any help given in deciphering what is the cause of the drain.
My current ROM is Slim v2.9.0 using CM10 Kernel.
Let me know if there's any more information needed, thanks in advance!

You don't have any serious battery drainer.. Have you thought about getting a second battery though?
Sent from my GT-I9100 using xda premium

I've tried changing batteries with my brother's phone (1 day charge rate with heavy usage) and still achieved pretty much the same battery life when on my phone.

I've noticed that I have this problem with AOSP/AOKP roms. While I'm on some Samsung based custom, battery is excellent. All with same kernels!
Maybe you should try flash something like Neatrom as Second rom and see how long the battery lasts.
Sent from my GT-I9100

thanks for the advice, I'll give that a try!

I fully agree with kilometers4 (post #2), looks like poor battery capacity. However, as you already changed the battery without significant effect, it must be something else.
Looking at the logs you provided I would run the exact same "tests" but with the data connection disabled. These results could help in further debugging.

Related

Am I missing something?

Hey,
I flashed lighting rom yesterday and was my first custom rom I have ever experienced. I love it, however battery life is worse than stock rom and I have done a recalibration of the battery. Is there something im not doing because I was lead to assume that my battery life would improve.
If there is something I am not doing, please enlighten me.
Thanks
Sent from my GT-I9100 using XDA App
From my experience a custom rom uses power pretty much the same as stock but once you root the phone you can freeze processes which then save the battery.
On stock I was getting screen on time of about 4.25 hours but now on villain rom I got just over 5 and still had 22% battery left.
I use ant tek app manager to freeze the processes.
I am sure people are going disagree with me here but I really think people are expecting a little too much out of this liddle-o-battery, if your phone is running at 1.2 all the time then its gonna suk-da-juice. I don't pick ROMS based on its battery performance as most now have battery optimisations cooked in as soon as they are found anyway. I just make sure I have some practical SETCPU profiles set to keep those megahertz at bay but also charge my Phone at work so it don't cost diddly anyway.
I also have a spare batter just in case
When the phone turns on, the camera makes a noise like it is coming on, is this normal? If not this could be it, however I have also noticed that the drain is absolutely massive when the screen is on (almost 10% in 20min)
Sent from my GT-I9100 using XDA App
To have ANY idea about whats going on with your phone post screenshots of settings > about phone > battery.
Of both the graph and of the list of %'s
Also what rom/kernel/modem
Only thing which is suspicious is that display is a lot higher than normal, possibly due to the crt bug where auto brightness is not very good, have now set it to manual.
Sent from my GT-I9100 using XDA App
Not a clue, without screenshots I cant know how you are using your phone etc
Fair enough, I may see how my use is tomorrow, I have installed juice defender so hopefully that will help things, I really like this ROM
I flashed litening rom 2.0 then cwm flash update 2.1 + 2.2 coming from stock rom noticed a battery life increase of about 50%.

[Q] Battery drain problem - or is it just me?

Hi there,
just in advance: Yes, I have read quite a bunch of battery drain threads, but non of them seemed to help me.
Compared to GB, my SGS2 doesn't even seem to last more than a day in terms of battery life.
Now I wonder - is it just me playing around with (otherwise awesome) CM9 and battery life is actually normal or is there some kind of battery drain going on?
Running CM9 14-04, stock kernel, LPS baseband.
Attached please find BBS stats and other battery stats screenshots.
Help very much appreciated
lunatic54 said:
Hi there,
just in advance: Yes, I have read quite a bunch of battery drain threads, but non of them seemed to help me.
Compared to GB, my SGS2 doesn't even seem to last more than a day in terms of battery life.
Now I wonder - is it just me playing around with (otherwise awesome) CM9 and battery life is actually normal or is there some kind of battery drain going on?
Running CM9 14-04, stock kernel, LPS baseband.
Attached please find BBS stats and other battery stats screenshots.
Help very much appreciated
Click to expand...
Click to collapse
Awake over 2 hours, 1 hr 43 min screen on, down to 62%. That's on track for 5.5 hours awake time, and about 4.5 hours screen on time. Looks pretty normal.
You MIGHT be able to squeeze a bit more juice out by playing with your sync and display settings, but that otherwise doesn't look that bad.
ctomgee said:
You MIGHT be able to squeeze a bit more juice out by playing with your sync and display settings, but that otherwise doesn't look that bad.
Click to expand...
Click to collapse
Sync is pretty much off completely and display brightness was on 'auto'...
the graph looks pretty good without gsf and alarm manager wakelocks
Have you tried to re-calibrate your phone? I once messed around with my battery and i lost 70% battery overnight when it was on 100% because i was unplpugging, plugging my phone in randomly.
How do I do that?
Just bought a 2000mA battery and it seems I still got the same 'issue'...
Sent from my GT-I9100 using XDA
lunatic54 said:
How do I do that?
Just bought a 2000mA battery and it seems I still got the same 'issue'...
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
Download battery calibration app from play store, put phone on charge, wait untill will be 100% charged, open battery calibration app, click calibrate, unplug you phone. Done.
lunatic54 said:
How do I do that?
Just bought a 2000mA battery and it seems I still got the same 'issue'...
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
Did you try to wipe your battery stats? Also, I noticed that playing around flashing the Roms, requires 2-3 full charging cycles before the battery was "stable" again
I've also read the following but didn't try it (I imagine it does the same than wiping the battery stats in the recovery, but you never know, you can try it):
Delete batterystats.bin in data/system, after full charging (with Rootexplorer or another app)
Then, use it until to 90%, and full charging.
Good luck!
When is it a good idea to wipe battery stats? When it's empty or at full charge?
Sent from my GT-I9100 using XDA
The CM9 has some battery drain problems because is still developing maybe try wiyth another rom and see if the problem remains
lunatic54 said:
When is it a good idea to wipe battery stats? When it's empty or at full charge?
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
when its full charge. Try to play with other ROM+kernel, i did this and solved the battery drain issue....
Good Luck
M90 said:
The CM9 has some battery drain problems because is still developing maybe try with another rom and see if the problem remains
Click to expand...
Click to collapse
Stats seem fine to me. Your phone shouldn't drain much when idle, but once that big screen is lit up the power drains much faster. The SGS2 stock battery is not huge to begin with either. Your 2000mah will be better though, especially after using it for a few cycles. You can also try flashing a different stock kernel or custom kernel (Siyah, etc).
Sent from my GT-I9100 using Tapatalk 2
Thanks guys!
So charged my 2000mA battery up to 100% now and wiped the battery stats. Hope this helps.
I really wanted to stick to CM9, because I don't wanna do a factory reset every couple of days when flashing other ROMs, because I'm tired of setting up all my stuff over and over again...
Are the other ROMs really that much better? Thought that CM9 would be best, because most popular...
Or could it be the baseband/modem too?
I am on LPS right now... I've searched the forums forever, but can't seem to find an answer for:
What is the best baseband/modem for battery life?
lunatic54 said:
Or could it be the baseband/modem too?
I am on LPS right now... I've searched the forums forever, but can't seem to find an answer for:
What is the best baseband/modem for battery life?
Click to expand...
Click to collapse
ANSWER = non use whats best for your location network and phone .
jje
So I'm using Vodafone in Germany... anyone else?

[Q] Battery life issues

Hello
I've been having some battery problems with my sgs2. I've bought it in june of 2011, it is my first smartphone and I was immediately pleased with it. great phone, everything working properly. since it was my first phone I was a light user and the battery could last me 2 days, sometimes it even got to last 3 days. However, at the beginning of the year I felt a sudden drop in battery performance, coming to last only 12-15 hours with light use. by this time I became more of a medium-heavy user and under "normal" use the phone would be dead at 10 hours, maximum.
I bought a new battery, official samsung 2000 mAh, and the performance became slightly better. It would at least last a day of work, but the performance was never as good as the original 1650 mAh battery when I first bought the phone.
by this time I began experimenting with ROMs, ressurection remix, miui, and now pfittech. but as time passes the performance is always dropping and today something strange happened. I locked my phone at 17% of battery, and after a while I checked it and the battery was at 18%. I checked again and is now at 19%. Right now it's 21%. What the hell?
can anyone help me? any help would be much appreciated.
p.s. i've tried calibrating the battery and I've read in the forums that on JB it's not necessary because the phone now clears battery stats when they reach 100%. I've also changed the stats with extweaks to absolutely no effect. I've been reading many topics on this but nothing quite seems to fit my situation.
mate u have to reset gauge in extweak then kill ur battery and pull off for 5 min then charge that should do
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stopro said:
mate u have to reset gauge in extweak then kill ur battery and pull off for 5 min then charge that should do
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Thank you for your advice I will try that. I'll let you know if it works. btw, when you say kill the battery you mean let it drain to zero right? sorry if dumb question, I'm a newb at this hehe

[Q] Battery Drain

Hi,
I would like to ask for some help regarding battery drain. Im currently using S3 with CM10.1 and the battery drain is quite high.
Using BBS, i have gathered some stats and i would like to request for some help in analysing it.
I see that multipdp is taking up a huge chunk of the kernel wakelock. my signal strength is at -85 mostly.
In the battery stats, it also shows that android OS is taking more than 50% of battery, that's unusual right?
Any advice would be greatly appreciated!
Hi,
Any help please?
Really need help! Appreciated thanks!
ultamatrix said:
Hi,
I would like to ask for some help regarding battery drain. Im currently using S3 with CM10.1 and the battery drain is quite high.
Using BBS, i have gathered some stats and i would like to request for some help in analysing it.
I see that multipdp is taking up a huge chunk of the kernel wakelock. my signal strength is at -85 mostly.
In the battery stats, it also shows that android OS is taking more than 50% of battery, that's unusual right?
Any advice would be greatly appreciated!
Click to expand...
Click to collapse
all the cm roms have the problem of battery drain. i get around 15 hours on a normal usage and around 10 hours with a little bit more usage. try changing the kernels.
:good:
Cyanogen mod roms are known to drain battery much faster than touchwiz.so you cant really expect the battery life to be the same as on stock or stock based roms. you may improve the battery life by using an app called Greenify. it hibernates apps so that they will not run in the backround. this can help considerably. also make sure to turn off gps , bluetooth, wifi. and mobile data when not in use. also battery should improve after three charging cycles
ultamatrix said:
Hi,
Any help please?
Really need help! Appreciated thanks!
Click to expand...
Click to collapse
Do not bump before 24 hours of inactivity on the thread. It is against the rules that you agreed upon when signing up for this forum.
CM doesn't have the best battery life, I see some Facebook related things. Facebook is a known battery drainer. Their app coding is atrocious.
Sent from my GT-I9300 using XDA Premium 4 mobile app
Thanks for all the feedback. I accept that CM can drain more battery than stock.
What im quite bemused by is from seeing how other people's battery usage do not have the OS taking more than 50% but mine in fact does.
I just have a feeling that's unusual?
Sorry for not abiding by the rules, my anxiousness to find a solution :crying:
Just read the ten million identical help battery drain posts for clues .
jje

[Q] Serious battery drain and weird behavoir (Neatrom)

Hello, xda.
[i9100, Team Win Recovery Project v2.7.0.0, any recommendations for different kernel? and what show i do in order to change kernel?]
using a great guide, I installed neatrom AOSP 4.4.2 in my galaxy s2,
everything is great and seem very stable, BUT:
the battery drains really fast. also sometimes when rebooting i loose about 40%.
once the battery wasnt charged and after rebooting (and loosing 40%)
the battery raised from 22% to 23%.
while charging in my car today and using waze, the batter dropped... (WHILE CHARGING..)
the battery is really old (1.5YR) but its not the problem, the phone looses a lot of battery while idle.
any help?
(I wanted to buy BBS but its simple for me to buy online right now during credit card issues..)
Thanks in advnace!
:good:
EDIT:
Please tell me there is a way to change my username xD
Aosp roms use battery like is nothing. Get BBS for battery stats and what's draining you're battery so quick. Sudden battery level drop means bad battery. Will need replacing soon. Ask a mod to change names. Most will help you with this. :thumbup:
You definately have the right idea. There is a free version of BBS here on xda. Just search BBS thread. And don't forget to enable root feature in settings...
Sent from my GT-I9100 using Tapatalk
all Kitkat roms have a battery drain ..
so if u want the best battery life u should go back to 4.1.2 .. like WizzedKat Rom or any stock rom..
and use Apollo Kernel
if u want to go back from kitkat to 4.1.2 u should flash PhilZ Recovery and full wipe )
I will soon upload my bbs logs, I made a test and the phone consumed much less battery when the sim card wasnt inside.
is there anyway to cancel all background apps or to reduce cellular data usage for apps?
perhaps use greenify to freeze apps......
or dont sync ur apps too often....
Avishai1b said:
Hello, xda.
[i9100, Team Win Recovery Project v2.7.0.0, any recommendations for different kernel? and what show i do in order to change kernel?]
using a great guide, I installed neatrom AOSP 4.4.2 in my galaxy s2,
everything is great and seem very stable, BUT:
the battery drains really fast. also sometimes when rebooting i loose about 40%.
once the battery wasnt charged and after rebooting (and loosing 40%)
the battery raised from 22% to 23%.
while charging in my car today and using waze, the batter dropped... (WHILE CHARGING..)
the battery is really old (1.5YR) but its not the problem, the phone looses a lot of battery while idle.
any help?
(I wanted to buy BBS but its simple for me to buy online right now during credit card issues..)
Thanks in advnace!
:good:
EDIT:
Please tell me there is a way to change my username xD
Click to expand...
Click to collapse
My dear pls accept the fact that soon you have to change your battery to resolve this drop issue.
Sent from my GT-I9100 using xda premium

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