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.
Finnish technology company Donut Lab has published the results of a special fast-charging test. In the fourth round of testing the controversial solid-state ...
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Donut Lab’s solid-state battery keeps 97.7% charge after 10 days in third test
Finnish startup Donut Lab has just released the third independent test of its solid-state ...
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