Automaker Stellantis holds a 9.5% stake in U.S. solid-state ​battery startup Factorial Energy (FAC.O) and might ‌buy further shares in the future, a SEC filing showed.

Solid-state batteries for ​electric vehicles are expected to ​be lighter, with better energy density ⁠than, traditional lithium-ion batteries, and ensuring ​faster charging times. However manufacturers have ​so far struggled to produce them at scale.

($1 = 0.8728 euros)