I'm new to forum, just learning how to build EV - it is cheaper for me, because I'm living in China.
searching for batteries in Taobao.com, chinese ebay
What I found:
12v, 200Ah, 1088rmb (173$), other places similar power selling for 788RMB
http://item.taobao.com/item.htm?id=1...56e612ca809465
Lithium, 12b 50Ah, 2650rmb, (424$), weight 10kg
http://item.taobao.com/item.htm?id=1...3k1_1783564695
Chinese now using ultra-capacitors batteries, less expensive and more rechargeable, up to 100 000 times
http://english.chinabuses.com/news/2...icle_5505.html
I'm also searching for ultra-capacitors to build own batteries, it may be much less expensive
2.5v, 630F, 13RMB
http://item.taobao.com/item.htm?id=9..._u=nl7jn38e865
2,5v, 2000F, 60RMB
http://item.taobao.com/item.htm?id=1..._u=nl7jn38be21
http://www.alibaba.com/product-gs/51...capacitor.html
10000 F, 4 Ohms
2.7V3000F0.45 Oh, 63×140screw
any feedback will be greatly appreciated
Jan