Donut Lab released the third independent test of its controversial solid-state battery, this time trying to prove it's not a ...

The startup's third test evaluates whether its solid-state battery is actually a supercapacitor. Here's what the results say.

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

Finnish technology company Donut Lab has published the results of a special fast-charging test. In the fourth round of ...

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