HQRP Transmitter Battery for Dt-Systems EDT SERIES Super Trainer Dog Training Collar fits EDT 100, EDT 102 + Coaster HQRP&reg; Rechargeable Transmitter Battery plus HQRP&reg; Coaster; Battery Voltage: 7.2V; Capacity: 350 mAh; Ni-Mh; 100% compatible with Original Battery; 200 Days warranty!