There was speculation that Donut Lab’s battery was able to discharge energy so quickly because it was a supercapacitor in disguise. So the startup set out to disprove that claim. There was speculation ...

Ever since Donut Lab unveiled its solid-state battery, experts have questioned the startup's claims. Donut Lab has commissioned an independent lab to verify that its SSB technology is real, and the ...

Finnish startup Donut Lab released its third independent test result Monday, the latest in a series of weekly rollouts related to what it claims is the world's first production-ready all-solid-state ...

The startup's third test evaluates whether its solid-state battery is actually a supercapacitor. Here's what the results say. Finnish startup Donut Lab released its third independent test result ...