FAC vs SLDP Comparison

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.

Solid Power Inc develops solid-state battery technology and manufacturing processes. Its sulfide-based solid electrolyte material replaces the liquid or gel electrolyte used in traditional lithium-ion battery cells and enables improvement in energy density, battery life and safety performance. The company produces electrolytes on two pilot manufacturing lines using a batch manufacturing process for customer sampling and internal cell development, and manufactures solid-state cells on pre-pilot and pilot cell manufacturing lines. Its cell manufacturing processes are developed around industry-standard lithium-ion battery manufacturing processes and equipment, and it manufactures all cell designs, including cathodes and anodes, using materials sourced from external suppliers.