Egoway Original Quality 1650mAh Li-ion Battery for Samsung Galaxy S II S2 GT-I9100, Galaxy S2 II I9100 Only For I9100, NOT Compatible With AT&T Galaxy S2 II(SGH-I727), NOT Compatible With Sprint Galaxy S2 II D710(Galaxy S II Epic Touch 4G), NOT Compatible With T-moblie Galaxy S2 II(SGH-T989) Tested under strict quality control standards. CE and ROHS certified. Original battery quality,Grade A cells ensure longer battery life and high-speed, efficient charging Built-in IC chip prevents overcharging. Guaranteed to fit your phone Voltage: 3.7V. Capacity: 1650mAh.Compatible with i9100 Galaxy S2 , i9100G 12 Months Warranty