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Didn't Elon Musk promise a battery-swap system for Tesla too? This thing: https://www.teslarati.com/tesla-shuts-down-battery-swap-program-for-superchargers/ ht

• Animats 7y ago
  It can be done, but it's not worth it. Battery swapping was a bet against more battery capacity and faster charging. Even industrial battery swapping, for forklifts, straddle carriers, AGVs, and such, which was once popular, seems to be on the way out. The machines can get through a workday on one charge now, then charge up while parked. Five years ago there were videos of clever battery swap machines.[1] Not so much now. [1] https://www.youtube.com/watch?v=lvqbw0UT5pM https://www.youtube.com/watch?v=lvqbw0UT5pM