Stellantis begins road tests of solid-state battery technology

Stellantis has launched a road-testing program for solid-state battery cells, integrating Factorial's FEST (Factorial Electrolyte System Technology) into a Dodge Charger Daytona development vehicle, according to Design and Development Today. The programme aims to verify the cells' performance, safety and reliability under real-world driving conditions. The move marks Stellantis' first integration of solid-state cells into a prototype vehicle and underscores the Turin-based group's commitment to securing next-generation battery technology as the automotive industry races toward high-energy-density, fast-charging power sources.

Solid-state batteries represent a significant leap in energy density and charging speed compared to conventional lithium-ion cells. According to industry coverage from Automotive World and other technology outlets, solid-state cells promise to extend driving range, reduce charging times and improve thermal stability—advantages that could reshape competition in the electric-vehicle market over the next five to ten years. By testing Factorial's cells now, Stellantis is positioning itself to evaluate whether the technology can meet the automaker's durability and performance standards before committing to large-scale manufacturing partnerships or integration into production vehicles.

The test programme reflects broader industry momentum toward solid-state technology. Reuters and the Financial Times have reported that multiple major automakers—including BMW, Hyundai, Toyota and Samsung—are pursuing solid-state battery development, with several aiming for production deployment in the late 2020s. Stellantis' move to test Factorial's cells suggests the group is evaluating multiple battery suppliers and chemistries to ensure it has options as the technology matures.

For Piemonte's automotive cluster, the development carries indirect significance. Stellantis operates substantial battery research and development operations across Italy, and the Turin region hosts engineering talent and supply-chain partners involved in powertrain systems. As the group scales up battery testing and moves toward production integration, such work could support continued R&D investment in the region. However, the sourcing of solid-state cells—whether from Factorial, Asian suppliers or other partners—will ultimately determine where manufacturing and assembly jobs emerge.