Hello, I bought this bike in the Fiji Islands and it really fit our needs, we use it to get around the island, all dirt roads! My question is, I´m not in Fiji now and I need to know what size drive chain it uses and what size battery (6 or 12 volt) so I can match with whats available here in the USA. I a off to Fiji in a week so really need to know! Any help would be greatly appreciated. Thankyou