HQRP Battery Pack compatible with NEVO Q50 Remote Control/Universal Controller NEVOQ50 Q-50 Q 50 plus HQRP Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.7V; Capacity: 1200 mAh; Li-Pol; 100% compatible with Original Battery; 200 Days warranty!