Donut Lab, a venture-backed startup operating largely in stealth mode, has presented a solid-state battery prototype that the ...

A small Finland-based startup claims to have made a big, solid-state battery breakthrough. Now, the industry is asking for proof. Earlier this month, a little-known Finnish startup shocked the world ...

Donut Lab unveiled tests this week demonstrating its battery's charging capability. Experts still have big questions—about cycle life and performance at the pack level. Donut Lab is releasing more ...

Earlier this month, a little-known Finnish startup shocked the world when it claimed to have beaten Toyota, Samsung, LG Energy, Quantumscape and any number of Chinese automakers at commercializing the ...