Since ICS upgrade, battery draining 3%/hr while idling

[robcassman]

I did a second full data wipe...still poor battery.

 

[KRoberts]

I notice that one of my two batteries is not as strong. I have a new job and can actually use my phone, streaming music and bookface at lunch. I'm having to change out batteries at around two pm.

Sent from The Dark Side

 

[codycorexxx]

My battery life was horrid on ICS... Once I moved on I gave the old SII to my old man, to get him away from WP7 and into the Android world. He travels a lot and is always on the phone, I ended up going back to 2.3.4 for him haha. I was so worried about him experiencing bad battery life. Though, he won't be flashing ROMs I might put ICS on the phone for him, since he won't be flashing battery life would slowly get better sticking with just one ROM and kernel combination.

 

[scottwood2]

I have done a few things that have greatly improved battery life. I uninstalled software for monitoring the battery and dimmed the screen down a little. This helped quite a bit. I also noticed that after I did the last update of my programs my drain went down even farther. Last night after being off of charge for more than 12 hours I still had 78% charge left (that is with the new extended battery).

Today is a little worse with about 70% left after 78 hours. I am at work and it is hard to get a cell phone siginal here. I think the looking for the radio signals takes more signals

I hope that this is fixed now.

 

[gmfirebird]

When I upgraded my phone I was having similar battery issues, but then I read on another forum to do a hard reset. I did that and it took care of the issue.

 

[FunSized21]

How To Increase Samsung Galaxy S2 I9100 Battery Life

This website I found helpful...

It is said that having a "Task Manager" drains batteries a lot. I got rid of mine and my battery isn't draining as much, although I still have to charge my phone 2 maybe 3 times a day... But I play on it all day too. Are you charging your phone on your computer? If you are at times, it won't charge it as well...

 

[glenndm]

Since Ics on a I9100, whenever the messaging app is active, the battery drains rapidly.
If I forget to kill the process after reading an sms, the battery is empty after a few hours in standby
Without that process active, a charge will normally last a few days.
(gps,bluetooth are disabled)

 

[j510]

Gingerbread is the way to go