Stellantis N.V. and Factorial Energy successfully validated Factorial’s automotive-sized FEST (Factorial Electrolyte System Technology) solid-state battery cells. This achievement marks a significant step toward bringing next-generation electric vehicle (EV) batteries to market.
Solid-state batteries offer higher energy density and faster charging than conventional lithium-ion batteries. The validated 77Ah FEST cells demonstrated an energy density of 375Wh/kg, and over 600 cycles progressed towards automotive qualification, a milestone for large-format lithium-metal solid-state batteries.
The cells significantly reduce charging time, from 15% to over 90% in just 18 minutes at room temperature. Additionally, the cells deliver high power output with discharge rates up to 4C, supporting greater performance demands in electric vehicles.
Factorial’s scientific engineering and AI-driven tools developed the latest electrolyte formulation that allows the battery to perform in temperatures ranging from -30° to 45° C (-22° to 113° F). This surpasses previous solid-state limitations and allows better performance across various climates.
By closely collaborating on pack design and leveraging this disruptive technology, Stellantis and Factorial are optimizing battery pack architecture to reduce weight and improve overall system efficiency for seamless integration. These weight savings directly enhance vehicle range and support more sustainable and affordable EV solutions.
Building on Stellantis’ $75 million investment in Factorial Energy in 2021, this milestone strengthens the strategic collaboration between the two companies. With this achievement, Stellantis will advance its previously announced plan to integrate Factorial’s solid-state batteries into a demonstration fleet by 2026. This demonstration fleet represents the next step toward commercializing this promising technology, enabling further validation of Factorial’s solid-state batteries and assessment of performance in real-world driving conditions.
Filed Under: Batteries, Technology News