Generic Replacement Extended Backup Thicker 3500mAh Battery With Back Cover For Sprint HTC EVO 4G Generic Best replacement upgrade to the original Sprint HTC Evo 4g battery This replacement battery is twice the thickness than the original with a HUGE 3500mah rating, this means it is a higher capacity for longer talk, text and web use. Also included is a new battery cover, this cover is specially made to accommodate the new battery size. Factory direct from BAAKYEEK this means HUGE savings for you. All batteries undergo and pass a factory safety test, and rest assured the quality is guaranteed with a 1 year warranty.