HQRP 1800mAh Battery compatible with Tivoli Audio Battery Pack MA-1 MA-2 MA-3 Replacement plus HQRP Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 7.2V; Capacity: 1800 mAh; Ni-Mh; Compatible with Original Battery; 200 Days warranty!