Seidio BACY35SSGS3N-BK Innocell 3500mAh Extended Life Battery with NFC for Samsung Galaxy S III - Retail Packaging - Black Comes with a black replacement door featuring Seidio's signature soft touch coating Keeps your phone charged and ready to go, even with heavy phone and data usage Capacity: 3500mAh In order to obtain the full capacity of your Seidio battery, we highly recommend that you 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 Samsung Galaxy S III