whatever rom i run, im done before the end of the day with battery life. and i have the big bulky rosie o'donnel battery too. if i run gps at all, forget it. i keep hearing geekers writing about using the reg battery and still getting through the day. my screen turns off in 10 seconds. i have no programs running in the background, so what else can i do. and im a flight attendent so dont say keep plugging it in