The New CF-VZSU66U Battery for Panasonic Toughbook CF-C1 MK1 MK2 CF-C1MDB21 is a high-quality Li-Ion battery with a capacity of 43Wh/5700mAh, providing extended usage for your laptop. This battery is compatible with Panasonic Toughbook CF-C1 Series models, ensuring a perfect fit and reliable performance. With a manufacturer warranty of 2 years and a voltage of 7.4V, this battery is a reliable and long-lasting accessory for your Panasonic Toughbook.