I had mine from:
http://www.heligear.nl/revolectrix/laders ( I took out dutch VAT)
but I bought cables +usb pc-connector+ balance connector from:
Go to: http://www.revolectrix.com/pl8_description_tab.htm
to find a lot of info + windows pc software
And use youtube to find tutorials as how to charge/discharge big Li-ion batteries, and or test these.