There are already aftermarket battery suppliers for some of the EV's. Most of the one's I have seen remove good packs from damaged cars for resale, but some are actually repairing packs by replacing bad modules with a module from removed packs. It's not difficult to load test a pack or a module to see if the two pieces are compatible. I wonder if it would be worthwhile to by say an older Nissan Leaf with a nearly dead battery pack and then have a new pack installed. Last time I checked new Leaf packs were going for around $6000. If you were able to get the car for $2 or$3000, you might have a useful EV that would last 10 years for under $10000. Obvious there would be a few maintenance issues but any more a thousand a year for a car is pretty good in my book.
JJ
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