Pro-specified integrated battery with high capacity, designed to work in all weather conditions. Robust construction enables up to 1500 recharges. Features efficient cooling and intuitive 4-LED charge indidicator. Fits K535i Power Cutter Specifications Battery Capacity, Ah 5.2 Battery output power, Wh 187.2 Battery Type Li-Ion Battery Voltage, V 36 Cells per Battery 20 Battery Weight 2.9 lbs Bluetooth Connectivity No