VTT testing says Donut Lab’s “solid-state” battery likely matches lithium-ion; energy density measured at 298 Wh/kg, claims ...

Solid-state batteries have long been the white whale of electric vehicles, promising lighter packs, faster charging and road-trip ranges that make gasoline look outdated. What is changing now is not ...

The race to reinvent the electric vehicle battery just crossed a line that had existed mostly in lab demos and investor decks. A small Finnish outfit, Donut Lab, says it has moved solid-state cells ...