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IMHO: the Tesla Model 3 batteries are the least repairable of any EV. Those thousands of cells are glued together 3 different ways to make one giant brick of high voltage fun! In this video we tear apart one of those 200 lb battery packs to get out individual cells and see how the pack is constructed. It's a design optimized for production but one of the worst for trying to reuse into a DIY EV.