Major sodium-ion battery milestone passed by California startup — Unigrid aces Hyundai’s safety tests down to -20C as experts call tech a 'compelling alternative' to lithium-ion
THE SO WHAT
If sodium-ion can clear OEM safety bars like Hyundai’s at -20°C, grid-scale and low-cost mobility storage just got a credible non-lithium path. Hardware teams should start modeling sodium-ion into 3–5 year roadmaps where cost, safety, and temperature tolerance matter more than energy density.
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