Stellantis Begins Road Testing 375 Wh/kg Solid-State Battery in Charger Daytona
STLA•Stellantis integrated Factorial’s FEST® solid-state battery cells into a Dodge Charger Daytona development vehicle and launched road testing to validate performance, safety and reliability. The battery pack uses a patented mechanical architecture to accommodate cells previously demonstrated at 375 Wh/kg energy density and 15-90% charging in 18 minutes.
1. Integration of FEST® Solid-State Cells
Stellantis engineers successfully integrated Factorial’s FEST® solid-state battery cells into a Dodge Charger Daytona development vehicle as part of the multi-stage program. This is the first North American automotive integration of the technology and follows lab demonstrations showing cells with 375 Wh/kg energy density and fast charging capabilities.
2. Patented Mechanical Architecture
The development vehicle’s battery pack employs a new patented mechanical design by Stellantis to securely house solid-state cells within an existing pack structure. Control systems and pack design were adapted to optimize temperature management, safety standards and cell performance across a wide operating range.
3. Road Testing and Validation
Stellantis has initiated a road testing and calibration program to verify battery performance, safety and reliability under driving and charging conditions. Engineers will collect data on charge times, thermal behavior and range to fine-tune the pack before further development stages.
4. Implications for Commercialization
This milestone advances Stellantis’ path toward automotive-grade solid-state batteries with potential for longer range, faster charging and lower manufacturing costs. Continued collaboration with Factorial aims to scale FEST® technology and integrate it into future EV models.
