I would have thought the basic idea was the one thing to stop you buying it. Especially as they don't quote a range.
http://www.huffingtonpost.co.uk/2015/01/05/gogoro-electric-smart-scooter_n_6416728.html?1420472001
http://www.huffingtonpost.co.uk/2015/01/05/gogoro-electric-smart-scooter_n_6416728.html?1420472001