Finnish startup Donut Lab has just released the third independent test of its solid-state ...

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Donut Lab solid-state battery retest by Finland’s VTT shows capacity rising to 110% at 80C, but weight data is still missing.

Earlier this year, Finnish startup Donut Lab grabbed headlines after claiming it had developed the first production-ready solid-state EV battery capable of charging in about five minutes. The ...

Its lithium-ion battery will eventually refuse to hold a charge, as degradation via charging and time catch up with the device. The electrolyte inside will stop working, and it’ll be time to repair or ...

The Donut Lab solid-state battery was heated to the boiling point of water. Here’s what happened next.

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Donut Lab's third independent VTT test confirms its solid-state battery retains 97.7% capacity after 240 hours idle. Energy density and cycle life remain untested.