[Q] battery life - Galaxy S II Q&A, Help & Troubleshooting

hey
i want to have a better battery life and i dont know how to improve it..
can u tell me what rom and kernel has best battery life for my galaxy s2?
right now im on wanamlite la4 final and siyah kernel and from 8:00 in the morning to 2:00 in the afternoon its got 10% down is it normal? good? bad?
what is best kernel for battery life? (i dont use vcontrol)
what is the best rom for battery life?
im not gonna buy an extended battery..
thanks

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so you drained your phone in couple hours, the question here would be
what were you running cause even if you get the best rom/kernel with the amount of apps or usage you can kill your battery in the same amount of time
i suggest you first find out whats drainning your current setup with betterbatterystats
and if you have wifi/3g and stuff like that on, also the brightness levels, if you have any special app that might be waking up your phone

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There's no such thing as the best rom or kernel for battery life because there's too many variables that determine how long you get out of a charge. It depends on your phone setup (what apps you have installed), how you use your phone, as well as the rom & kernel.
Because of these factors, you won't see the same battery life with the rom/kernel combo I use.
You can install BetterBatteryStats (search for the thread on here) and use it to see if there are wakelocks causing your battery to drain when you're not using the phone much, for example.
Whether 10% battery loss in 6 hrs is good or bad again is impossible to answer because of the above factors. On the subject of extended batteries, I do recommend the original Samsung 2000mAh battery, what's not to love about 20% more juice & the phone only a few mm thicker ? (the phone fits in my original case with battery cover removed).

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thats my battery usage... nothing has been used
is there a different battery life for modems? or its like kernel and rom like u guys said?
when i will come back home i'll upload another picture with this "betterbatterystats"
thank u all for help!

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If you get BetterBatteryStats, let the phone run for a couple hrs (at least) after you install it (overnight, or whenever you think the phone is draining too much when it maybe shouldn't be, like that 8am-2pm period you mentioned in your OP). Don't post anything 10 minutes after you've installed BBS. You need a couple hours data minimum to get an accurate idea of what's happening.
orr77746 said:
thats my battery usage... nothing has been used
is there a different battery life for modems? or its like kernel and rom like u guys said?
when i will come back home i'll upload another picture with this "betterbatterystats"
thank u all for help!
Click to expand...
Click to collapse

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MistahBungle said:
If you get BetterBatteryStats, let the phone run for a couple hrs (at least) after you install it (overnight, or whenever you think the phone is draining too much when it maybe shouldn't be, like that 8am-2pm period you mentioned in your OP). Don't post anything 10 minutes after you've installed BBS. You need a couple hours data minimum to get an accurate idea of what's happening.
Click to expand...
Click to collapse
its before i installed tommorow morning or afternoon after a night ill post this bbs