Tested two 12ah batteries and passed. It appears to be in full working order. The solid tyres seem to be in good order. We have driven it around our car park and it is very comfortable to drive! It has been designed to maximize transportability, manoeuvrability and performance.The heaviest component weighs only 14 kg which makes it ideal for travel.To enhance your ride quality, a breathable swivel seat is included to help you transfer to and from the chair much easier.