These two days i'm searching on batteries and found that the min weight for the 36V batteries is 5Kg .And for 36V&20Ah the weight is 6kg. And rest is on this website. The batteries are lithium polymer. And i also found that the chargers are not sold with them. And we have to buy thw chargers which are too costly.
links:http://www.powerstream.com/LLL-polymer.htm(Not taking orders now jus for specs)
http://www.eigbattery.com
and other minor sources.
