HQRP Battery for SuperBuddy, Super-Buddy 21 29 Satellite Signal Meter Applied Instruments 742-00014 + Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 7.2V; Capacity: 3300 mAh; Ni-Mh; 200 Days warranty!