HQRP Battery compatible with Logitech diNovo Edge, DiNovo Mini, Y-RAY81 Rechargeable Keyboard plus HQRP Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.7V; Capacity: 950 mAh; Li-Ion; 100% compatible with Original Battery; 200 Days warranty!