HQRP Battery for GolfBuddy Deca System GB2-BATT-PLU LP-A05-02 LP-A08-05 Size 41 x 36 x 8mm Golf-Buddy + HQRP Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.7V; Capacity: 1050 mAh; Li-Ion; Battery size: 41 x 36 x 8mm; 200 Days warranty!