Guys. Selling my light-weight battery as i sold the car and don't need them anymore.
It is brand new Voltphreaks VT750 battery with 1 year warranty from Voltphreaks.
Weight 5lbs only !! 
Brand new cost $1299 + Shipping.
Now : $799 + Shipping.
Spec and info can be found here :
https://p10.secure.hostingprod.com/@...products_id=81
Ken