Light Electric Wheelchair The X-lite features one or two standard 5.2AH lithium batteries with a quick-release catch and are air-worthy for smooth travel. The wheelchairs' battery lifespans can be extended with routine use and following manufacturer guidelines for maintenance. This model is easy to fold and weighs just 33 pounds. http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1678030