It only seems primitive until you try to figure out how to keep thousands of batteries all at the same charge level cycle after cycle. If even one manages to ha

It only seems primitive until you try to figure out how to keep thousands of batteries all at the same charge level cycle after cycle. If even one manages to have more charge than the others in the pack, it could overcharge and catch fire. Battery management has been the biggest problem among the DIY EV crowd and is responsible for a large number of fires.