Voltage:3.7-4.2V??Capacity:2900 mAh??Compatible with the original battery cover door.</br>STRONG BATTERY : Quality high capacity battery cell??Grade AAA cells ensure longer battery life (500+ cycles) and high-speed??efficient charging.</br>SAFE BATTERY : Anti-over charge protection??Anti-over discharge protection??Protection against short circuit??Anti-explosion protection.</br>SMART BATTERY : Power control chip??Dual Protection IC.</br>Battery Type:High capacity Li-ion Battery.Tested under strict quality control standards. CE and ROHS certified.</br></br>Product Description</br></br>Features: - Voltage:3.7-4.2V??Capacity:2800 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 : A