eBay
 This Navitas unit and hand held controller where used on a prototype EV HD truck to test for range, temperature, charging, regen etc. very simple setup  and very user friendly interface, if you are familiar with EV's you know this are bullet proof. This units are found on the Chrysler GEM, on many imported EV's  and also commonly found on industrial equipment, fork lifts, automated machinery etc. I am offering both the controller and hand held programmer which are hard to find.