Add enhanced battery life to your mobile phone experience. These high quality Japanese Li-polymer Extended Batteries provide more then double the capacity of a standard battery. Manufactured with top quality cells to ensure the highest level of safety, quality, and performance. The included XT battery door is made of durable plastic and has all the cutouts necessary (camera and speaker) for a perfect fit. Use your phone without compromising even with heavy phone, data usage, listen to your favorite music or video this battery will keep you charged and ready to go. Special Features: Made from the highest quality Japanese cells Comes with extended door Adds only 3-4mm to your device Keep your phone charged and ready to go, even with heavy phone and data usage.