I dont know why you guys do factory reset. that has nothing to do with battery. if you want to do a reset, you gotta do battery reset ( there is app in the market that does that, or even rom toolbox has that feature)
I also got rid of maps, hate the fact it keeps running even when I do not use it. Installed waze from the market, love it! not sure what att software update is useful for, it keeps running in the background...
Actually, resetting battery stats with that app does nothing. Do a search. The stats are reset at full charge every time.
And actually if you have a bad app or something from tibu that your phone does not like, a factory reset will solve it.
Sent from my SGH-I717R using xda premium