HQRP Battery compatible with Logitech S715i S-00100 984-000134 984-000135 984-000142 993-000459 Rechargeable Speaker plus HQRP Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.6V; Capacity: 1800 mAh; Ni-Mh; 100% compatible with Original Battery; 200 Days warranty!