LFP have a significantly more stable battery chemistry. Much more abuse tolerant and less likely to suffer thermal runaway. You'd get LFP cells so you won't have to store them in the shed due to fire safety. And while sodium ion batteries would be happy in a frozen shed they're supposed to be even more stable.

Anyway,sodium ion taking off explains the recurrent deep sales for LFP power stations. Which might still be overpriced if there developments hold up.