Acase 2700 mAh Extended Life Battery for BlackBerry 9700 with cover (black) Made from the highest quality Lithium Ion cells. Comes with a black case featuring Acase soft touch coating. Keeps your phone charged and ready to go, even with heavy phone and data usage Capacity: 2700mAh In order to obtain the full capacity of your Acase 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 show All battery life claims are dependent upon usage patterns, network configuration and many other factors; actual results will vary.