Earlier this year, Finnish startup Donut Lab grabbed headlines after claiming it had developed the first production-ready ...
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.
VTT's second independent test shows Donut Lab's solid-state cell delivered 110% capacity at 80°C and survived 100°C discharge ...
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