Donut Lab's 'Solid-State' Battery Exposed As Regular Li-Ion

Donut Lab's claimed solid-state battery is identified as conventional lithium-ion with high-nickel NCM chemistry. Independent experts found voltage curves and expansion data match standard lithium-ion, not solid-state or sodium-ion. The company raised $25 million from 1,300 investors citing 400 Wh/kg, 100,000-cycle life, and 5-minute charging, all now unverified.