Donut Lab has released five VTT test reports on its solid-state battery, but none address the 400 Wh/kg energy density or 100 ...

Given the damage sustained by the pack, the results shouldn’t be that surprising. The loss of the vacuum seal certainly ...

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

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

Skepticism grows around Donut Lab’s “impossible” battery as experts debate capacitor-like behavior and scarce independent ...

Earlier this year, Finnish startup Donut Lab grabbed headlines after claiming it had developed the first production-ready solid-state EV battery capable of charging in about five minutes. The ...

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

Donut Lab reports that its solid-state battery experienced a controlled failure when damaged, avoiding the fiery consequences typically associated with conventional electric vehicle batteries.

Donut Lab surprised everyone when it announced at CES 2026 that it's ready to ship the first commercial solid-state battery. The startup made incredible claims, including about longevity (100,000 ...