Originally Posted by manveru0
actually I didn't compared it with a tool. But my feeling was the same. Stock rom is already well balanced when it comes to battery life and speed. Even better than CM9 in terms of battery drain. But just a feeling...
I feel that CM9 is slightly better than stock samsung rom in terms of battery life. My battery doesn't die as fast I feel. Probably depends on usage. We all know by now the screen eats most of the battery, thus if you are continuously using it, battery will definitely drain faster.
Another thing is you might want to try using Siyah Kernel with CM9. I feel a slight improvement in battery life with Siyah kernel than with the stock cm9 kernel. Sometimes I feel I am a bit paranoid when it comes to battery life but I feel I should just be natural with it instead of keep looking at my phone lol.
Samsung Galaxy S III I9300
temasek Unofficial CM10.1 RC1; linaro Kernel