Factorial Inc.

Based in Woburn, Massachusetts, Factorial Energy is developing breakthrough solid-state batteries that offer longer range per charge and increased safety and aim to be cost-competitive with conventional lithium-ion batteries.

The company’s proprietary FEST^® (Factorial Electrolyte System Technology) leverages a solid electrolyte material, which has the potential to enable safe and reliable cell performance with high-capacity cathode and anode materials. FEST^® has been scaled in 40Ah cells, works at room temperature, and is compatible with existing lithium-ion battery manufacturing equipment. The company has entered into joint development agreements with Mercedes-Benz, Stellantis, and Hyundai Motor Company.