Donut Lab battery validation adds a 10-day room-temperature retention figure of 97.7%, while energy density and weight data remain absent.
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.
Interesting Engineering on MSN
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 ...
Interesting Engineering on MSN
US lab models lightning from clouds in plastic blocks to study storm physics
The scientific community long assumed that to understand how lightning works, one needed a ...
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