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Especially considering there’s no fire from a sodium cell, just a quick bang. They definitely seem a lot safer.
Yep, less/no fire is very important when creating battery banks with many cells. The probability of single cell failure spreading to adjacent cells is reduced, making a catastrophic failure of the entire bank less likely.
We already know how to take care of this in big capacitors. You put a breakaway vent in.
Yep, cylindrical Li-ion cells like the 18650 already do this.
