Earlier this year, Finnish startup Donut Lab grabbed headlines after claiming it had developed the first production-ready ...

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

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 ...

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

The Finnish firm claims it has beaten the world’s largest carmakers and battery giants to commercializing solid-state cells ...

The big reveal at CES of a production-ready solid-state battery needs backup.

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

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

Donut Lab, a Finnish solid-state battery maker, claims its cells retained 97.7% of their charge after sitting idle for 10 days, a figure that, if independently confirmed, would represent a sharp ...