Herolift's Battery Powered Vacuum Generators contains the same features as the standard Electric Powered Vacuum Generators but include a rechargeable 12 Volt DC battery, making it suitable for handling non-porous loads. It is commonly used for special applications where AC power is not readily available below the hook. Two main standard generators can be easily mounted to hundreds of potential lifting pads and beams. They recharge with standard 220 V AC power. We have recently redesigned these lifters with the latest new pumps, controls and batteries and they work better than ever. Contact factory for recommendations based on your application.