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.

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.

Solid-state batteries spark a global EV arms race as automakers and startups compete to unlock ultra-fast charging and the ...

VTT's second independent test shows Donut Lab's solid-state cell delivered 110% capacity at 80°C and survived 100°C discharge ...

VTT testing says Donut Lab’s “solid-state” battery likely matches lithium-ion; energy density measured at 298 Wh/kg, claims ...

Donut Lab released the results of the second independent test showing that its solid-state battery can handle extreme heat without affecting its performance ...

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

At CES, Donut Lab presented a solid-state battery allegedly ready for mass production. However, the impressive specifications prompted critics to question the ...

The Donut Lab solid-state battery was heated to the boiling point of water. Here’s what happened next.

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 ...