HQRP Battery compatible with SportDOG WetlandHunter 400 SD-400-CAMO SD400CAMO, SPORTTRAINER SD-400 SD-400E Remote Dog Training Collar Receiver FT-100 FT-303 FT-100BW 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!