HQRP Battery compatible with SportDOG SportHunter 800 SD-800 SD800, FR-200 FR200 650-058 Remote Dog Training Collar Receiver plus Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 4.8V; Capacity: 180 mAh; Ni-Mh; Compatible with Original Battery; 200 Days warranty!