7.4V, 4500mAh, Li-ion Battery fits Panasonic, Toughpad Fz-a1, Toughpad Fz-a1 4g, 33.3WhBattery Fits Models: Toughpad Fz a1, Toughpad Fz a1 4g Battery Part Numbers: Fz vzsu74u Canadian Batteries have supplied the replacement batteries from Cameron Sino for nearly a decade. We have had zero instances of a product being damaged while using one of our batteries in that time. We supply generic replacements for the OEM batteries; we have had thousands of satisfied customers using these batteries as an economical alternative to the original