SPECIFICATION : Model Name: Standard Rechargeable Li-ion Battery Type M5Y1K: Battery Type: Lithium-Ion; Voltage : 14.8V; Capacity : 40Wh; Cells: 4-cells; Color: Black; Size(L*W*H) about 10.6x1.5x0.75inch; Weight: About 9oz / 0.56 lb; Condition: 100% new