This Dodge Charger Daytona Is Transformed into a Solid-State Battery Test Bed
Stellantis and Factorial have integrated Factorial’s FEST solid-state battery cells into a Dodge Charger Daytona prototype for real-world testing, marking the first automotive application of this technology in North America. The test evaluates performance, safety, and durability, with potential benefits including higher energy density, faster charging, and lower costs compared to lithium-ion batteries.
Stellantis and battery developer Factorial have begun road testing a Dodge Charger Daytona equipped with Factorial’s FEST solid-state battery cells, the first automotive application of this technology in North America. The prototype undergoes real-world evaluation to assess battery performance, safety, durability, and reliability under driving and charging conditions. Solid-state batteries are seen as a breakthrough for electric vehicles, offering greater energy density, faster charging, improved safety, and reduced costs. Factorial’s technology demonstrated 375 Wh/kg energy density in 2025, with charging from 15% to 90% in 18 minutes and operation across extreme temperatures (-22°F to 113°F). Stellantis developed a patented battery-pack architecture to integrate the cells while maximizing performance, modifying controls and systems to meet automotive safety standards. The automaker emphasized the challenge of balancing battery development to deliver longer range, faster charging, and lower costs to customers. The Charger test vehicle is part of a multi-stage program between Stellantis and Factorial, backed by investors including Mercedes-Benz, Hyundai, and Kia. Road-testing will validate the technology ahead of future production applications, bringing solid-state batteries closer to market.
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