FEST® solid-state battery cells: Factorial’s proprietary FEST (Factorial Electrolyte System Technology) platform delivers automotive-scale lithium-metal quasi-solid-state cells boasting ~375 Wh/kg energy density, fast charging (15% to 90% in ~18 minutes), high power (up to 4C discharge), and extreme-temperature performance (-30?°C to?45?°C).
Solstice™ 40?Ah all-solid-state cells: Using a novel dry cathode coating process, these 40 Ah cells from the Solstice series reach approximately 80% higher energy density than conventional lithium-ion, with scalable, environmentally friendly manufacturing for automotive and commercial use.
Gammatron™ AI-driven digital twin platform: A simulation platform launched by Factorial to predict, validate and optimize next-gen battery performance, accelerating development from lab prototypes to commercial deployment while reducing test cycles and engineering costs.
Customizable FEST research & design services: Through the FEST platform, Factorial offers tailored R&D collaboration for OEMs, including cell design, testing and lab services, adapting their battery chemistry to specific vehicle or application requirements.
End-of-life lithium-metal recycling solutions: In partnership with Young Poong, Factorial is developing processes to recover and recycle lithium-metal from decommissioned batteries, improving sustainability and resource circularity for solid-state cells.
Automotive demonstration fleet integration: Factorial is working with Stellantis to validate and integrate FEST cells into real-world EVs ahead of a 2026 demonstration fleet, packaging cells into battery modules and optimizing vehicle architecture.
Drone-optimized FEST battery systems: Factorial shipped FEST lithium-metal solid-state cells to Avidrone Aerospace for use in long-endurance cargo drones, targeting extended range and reliable performance under varied altitudes and temperatures
OEM strategic partnership development: Factorial collaborates with major automakers (e.g. Mercedes-Benz, Hyundai, Stellantis) offering technical integration services, joint development projects, and customized cell formats for future EV platforms.
Scalable dry-coating manufacturing technology: Factorial’s solvent-free dry electrode coating method reduces solvent use, lowers production costs, and enables scalable manufacturing of solid-state cells suited for commercial volume output.
Battery pack architecture consulting: Through collaboration with automotive partners, Factorial advises on optimal pack layout, thermal management, and module design to maximize FEST cell efficiency, weight savings, and vehicle integration synergy.
Factorial Energy
805 Middlesex Turnpike
Billerica, Massachusetts 01821
