The CF-VZSU0PW Battery is a high-quality Li-Ion battery specifically designed for Panasonic Toughbook laptops. With a capacity of 4080 mAh and a voltage of 11.1 V, this battery is compatible with the CF-54 MK1, MK2, and MK3 models. It comes in a sleek black color and includes a manufacturer warranty of 1 year, making it a reliable and long-lasting choice for your laptop needs. Compatible with five units, this battery is a must-have for anyone looking to extend their laptop's battery life on the go.