GINOVO&reg; 1650mAh Li-ion Replacement Battery for Samsung i9100 Galaxy S2 , i9100G , Original Quality (One Battery) Compatible with i9100 Galaxy S2 , i9100G Tested under strict quality control standards Original battery quality,Grade A cells ensure longer battery life and high-speed, efficient charging High capacity 1650 mAh for long lasting power with 3.7 Voltage