I have yet to experience any kind of problem with my evo, including battery. actually my battery is great. with a full day of web browsing, youtube, music with wifi on im still left with 55% or so 12 hours later. yes yes, i know i dont speak for everyone, but every time i come on these forums there are soooo many posts about problems upon problems upon problems! does your device experience any problems? thanks for any and all answers!!