Factorial Energy Inc
FAC
About: Factorial Energy Inc is an American solid-state battery innovator backed by In-Q-Tel - the not-for-profit strategic investor for the U.S. national security community and America's allies - and Mercedes-Benz, Stellantis, Hyundai, and Kia. Through its proprietary FEST and Solstice platforms, engineered for scalable manufacturing, it delivers industry performance across defense, space, and energy storage applications. Mercedes-Benz's real-world road testing in a lightly modified test vehicle achieved over 1,200 km of range on a single charge, while Stellantis-lab testing verified 77 Ah cells demonstrating high energy density, fast-charging, and robust use for energy and power performance across temperature extremes.