Gold Extended BlackBerry Curve 9310 High Capacity Battery J-S1 For BlackBerry Curve 9310 / BlackBerry Curve 9315 / BlackBerry Curve 9320 2680 mAh Voltage:3.7-4.2V,Capacity:2680 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.