@owlyduck @donni It's all pop-sci clickbait but there's so much of it I have hope that there's some substance somewhere.
https://www.iea.org/commentaries/sodium-ion-battery-momentum-grows-but-challenges-remain
etc.
That's just from the first page of Google. I don't have any super secret sources, but if batteries charge twice as quickly for half as much money and no dependence on Lithium that can only be a good thing.