Description:. This external battery pack works with the built-in battery pack to provide power, allowing you to use an external battery pack to extend your riding distance. Our batteries are made from high quality cells to ensure a long service life.. Features：. Suitable Model: Only suitable for Voyager 1.0. Capacity: 48V 17.5AH, 840WH. Lithium-ion battery, UL tested. Battery weighs 6.8 pounds. Installation:. Backup battery installation guide. *Does not come with a charger
