Seidio extended battery is a cell phone replacement battery that will significantly lengthen your model device's battery life. Even with heavy data use and extended talk time, the Seidio cell phone battery provides more capacity than a standard OEM cell battery. This Seidio high quality Japanese cell phone battery has a 1300 mAh capacity. It fits in existing space, so no replacement door is needed.This Innocell extended battery provides more the capacity than the standard OEM battery. Even with heavy phone and data usage, this battery will keep your Blackberry charged and ready to go. Fits in existing space so no replacement door is needed.