The main benefits are that Sodium is abundant, cheap and stores 30x the energy of Lithium per unit mass. The draw back is that when exposed to water it explodes with 30x the energy of Lithium. The other drawback is that it bursts into flame when exposed to air.

Think of it this way, Sodium metal is abundant and cheap with 30x the energy storage (and energy transfer) of other solutions yet nobody has used it in almost any product ever (including as a coolant). The volatility of Sodium is why. Unless they have a solution to this, then I would be shorting whoever is insuring these batteries.

I thought the price differential was not going to happen as there was a serious drop in the price of Lithium over the past year; but I looked it up and the lithium price drop is more a 5 year trend, with the last few months having a sudden surge in the price.

https://tradingeconomics.com/commodity/lithium

*potentially a lot cheaper.

I've seen that repeated a lot but I still can't buy sodium batteries cheaper than lifepo...