IIRC sodium ion batteries have traditionally had trouble with rapid degradation ...

lambdatronics on Nov 22, 2023 | parent | context | favorite | on: Northvolt develops state-of-the-art sodium-ion bat...

IIRC sodium ion batteries have traditionally had trouble with rapid degradation due to the large size of the sodium ion, which disrupts the carbon electrode via swelling during intercalation. So I would be worried about the number of cycles they can last.