Seidio Innocell 1500mAh Slim Extended Life Battery for T-Mobile MyTouch 3G Fits in existing space so no replacement door is needed Made from the highest quality Japanese cells Capacity: 1500mAh To obtain the full capacity of your battery, leave the battery/your phone on the charger for an additional 2-3 hours after the charging indicator turns green or the battery status shows full. For use with: T-Mobile MyTouch 3G Capacity: 1500mAh Made from the highest quality Japanese cells More capacity in the same form factor Fits in existing space so no replacement door is needed Perfect replacement for your original battery