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.

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

Donut Lab, a California-based startup developing solid-state battery technology, has drawn intense attention and sharp criticism over claims that its donut-shaped cells can outperform conventional ...