Hellscape_Instigator t1_ix2b0hx wrote

Weren’t molten sodium batteries already a thing and proven to be really bad convenience-wise. Like, I think the Th!nk City had a molten sodium battery and they later changed to Lithium Ion because if you left the car sitting unplugged for too long (even if it had plenty of range) the battery would solidify and permanently kill itself.

Of course, the main claim of this article was that it’d be useful for grid backups. It makes sense in theory. The battery would only be “unplugged” when it’s being discharged and used, but I still can’t help but feel like a battery that has a time limit alongside a capacity limit is a bad idea, especially in an emergency situation. Also, places with extremely cold climates or bad winters would be even worse off.