Donut Lab is making wild claims about their new solid-state battery technology. Testing breaks down the specs, the science, ...

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

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

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 ...

During CES 2026, Donut Lab claimed it had built a solid-state battery that promised unprecedented energy density, longevity, and charging performance. Skeptics demolished Donut Lab's claims, but the ...

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