3 X 1850mAh Li-ion Replacement Batteries + USB Wall Charger for Samsung T-mobile Galaxy S2 T989, AT&T Galaxy S2 II Skyrocket I727, (Not Compatible With Galaxy Nexus I9250 and Galaxy S2 I9100 Tested under strict quality control standards. CE and ROHS certified Grade A cells ensure longer battery life (500+ cycles) and high-speed, efficient charging. Built-in IC chip prevents overcharging. Guaranteed to fit your phone. Voltage: 3.7V. Capacity: 1850mAh Ships from California within 24 hours