Donut Lab’s ‘miracle’ solid-state battery confirms 0-80% charge in 4.5 min — but there’s a catch

Electrek
By Fred LambertFeb 23, 2026, 12:23 pm46 pts
Donut Lab has released the first independent test results for its controversial solid-state battery, and the data confirms at least one headline claim: the cell charged from 0 to 80% in just 4.5 minutes at an extreme 11C rate. It doesn’t blow up, but it gets pretty damn hot. The results come from Finland’s…

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