Mini External Rechargeable Mobile Phone Battery 1.Universal battery 2.Competitive Price 3.Fine Quality 4.CE FCC RoHS UL Mini External Rechargeable ... Mobile Phone Battery1.TypeLi-polymer2. Voltage3.7V3. Capacity2100mAh4. Weight64g5. ... got CE,FCC,RoHS,UL certificates to assure the quality. Mini External Rechargeable Mobile Phone Battery