25-30 miles is rather typical of the range on a light weight, lead acid battery powered 72 volt system. But, not all batteries are created equal. I can guarantee you that if he had 12-6 volt golf cart batteries it would go further. But, they weigh a lot more and are physically larger.
My brother “electrocuted” a Yugo this summer. With a 72 volt system he had 25-30 miles range @ 40-45mph and was unhappy with it. So, he up sized to a 96 volt motor, controller and battery system and now gets 40-45 miles at 50-55mph.
Royal2013-11-13 18:35:14