Technical Data: Voltage: 18 Volt, Capacity: 4000 mAh, Power: 72 Wh, Type: Li-Ion, Color: Black, Length: 80 mm, Width: 160 mm, Height: 80 mm. Our offer includes a high-quality battery that is ideal as a replacement for your old or defective tool battery, as well as an additional spare battery for on-the-go use. Caution: Batteries that come with a charger should only be charged with that charger. Only new quality brand cells are used. Protective electronics and the use of high-quality components provide you with a high level of safety against overcharging and short circuits. This allows the battery to achieve a higher number of charge-discharge cycles, resulting in a longer lifespan for your new battery.