I'm not very knowledgeable in this area technically, so here goes: Would it be possible to retrofit an earlier SAE J1772-equppied car to accept the new SAE DC fast charge coupler? Supposing you could source the vehicle end connector, would using DC fast charging on a vehicle which was not originally designed for it, fry the battery? For just one example, if you had the right connector, could you DC fast charge a Think City, without any harmful effects? Or does the battery pack have to be "set up" for it? Or would it not matter?