This accessory is recommended to add extra power to your electric lift. This unique Power Booster Box will help when transporting heavier mobility devices; it prevents the lift from struggling when lifting heavier mobility devices. The Power Booster Box allows the lift to continue to operate at peak performance with smaller/weaker batteries or heavier mobility devices. A market first! ​Made in the USA. Available with longer wire for swing away option: please specify by using the drop down list when adding to cart.