HQRP Battery for Dt-Systems H2O, SPT2400, Redhead RH2 1200, BTB, EDT, EZT, ST PRO, CDT, RH, RH2 Series Dog Training Collar Receiver + Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 4.8V; Capacity: 330 mAh; Ni-Mh; Compatible with Original Battery; 200 Days warranty!