I just a added a PakTrakr 600 with two 6-battery remotes, current sensor and copper bus bar to our web store.
http://electricvehiclesolutions.com/...products_id=50 It's discounted 20% off new price. The unit was purchased new in Feb 09 for use in one of our prototype conversions, but was never installed. It can handle a twelve 12V battery string.
Craig