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

Donut Lab’s fast-charge demo beat many e-motorcycles, but 400 Wh/kg and 100,000-cycle claims remain unverified after 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 ...

Donut Lab’s solid-state, lithium-free battery has undergone a second round of independent testing, revealing both promising results and critical gaps. Conducted by Finland’s VTT research center, the ...