HQRP 4000mAh Battery for T-Mobile Springboard Tablet HB3G1H + HQRP Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.7V; Capacity: 4000 mAh; Li-Pol; 100% compatible with Original Battery; 1 Year Warranty!