some cm9 battery tweaks.try it guys it works.
battery drainage problems follow these simple steps
1.install advanced task killer pro and in settings in auto kill check it kill when screen off and choose option of aggressive.(uncheck apps u don't want to kill)
2.install juice defender ultimate n select advanced option
3.install easy battery saver and select super mode
4.in settings in mobile networks select 2g
5.in easy battery saver you can lower screen brightness below 0% also.lower as per your need
Sent from my Xperia X10 using xda premium