[marktwain]

Quite true - but it’s known that in fact these batteries will be cheap.

OK. Give us the retail price of the battery per kilowatt hour.

[Blueflag]

Bingo!

Cost per kilowatt hour, life expectancy, total cost of ownership, the real deal on numbers.

Worth paying attention to though.

[conservatism_IS_compassion]

IIRC Brian Wang said on youtube that it could be as little as $40 per kw-hr. Seems to me he spoke of one option being to use half Li and half Na batteries in a vehicle, and coming out with about $60 per Kw-h. I’m not sure that the retail price of an individual small rechargeable battery would tell us much.

The point, surely, is that we know that the price of lithium is the main driver in the cost of a lithium-ion battery - so much so that it is a very significant driver in the cost of a whole EV. In comparison, sodium is, as I noted, basically one of the forms of dirt. To call it “dirt cheap” is, therefore, hardly a stretch.