High Capacity Samsung Galaxy S2 SGH-i777 Battery EB-L1A2GBA EB-F1A2GBU + Universal Battery Charger With LED Indicator For Samsung Galaxy S II SGH-i777 / Samsung Galaxy S II I9100 / Samsung Galaxy S2 SGH-i777 / Samsung Galaxy S2 I9100 1850 mAh Voltage:3.7-4.2V,Capacity:1850 mAh,Compatible with the original battery cover door. STRONG BATTERY : Quality high capacity battery cell,Grade AAA cells ensure longer battery life (500+ cycles) and high-speed,efficient charging. SAFE BATTERY : Anti-over charge protection,Anti-over discharge protection,Protection against short circuit,Anti-explosion protection. SMART BATTERY : Power control chip,Dual Protection IC. Battery Type:High capacity Li-ion Battery.Tested under strict quality control standards. CE and ROHS certified.