Stellantis and Factorial Launch Real World Testing of Revolutionary Solid State Battery Technology

The future of electric vehicles may have just taken a major step forward. Stellantis and Factorial have officially launched road testing for an advanced solid state battery system integrated into a Dodge Charger Daytona development vehicle. The milestone represents the first time Factorial’s solid state battery technology has been installed and tested in a Stellantis vehicle on public roads in North America.

For years, solid state batteries have been viewed as one of the most promising breakthroughs in electric vehicle technology. Automakers and battery developers have invested billions of dollars into research aimed at creating batteries that offer longer driving range, faster charging, improved safety, and lower overall costs compared to traditional lithium ion batteries. While the technology has shown tremendous promise in laboratories, bringing it into a real vehicle environment has been a significant challenge.

Now Stellantis and Factorial have moved beyond laboratory testing and into real world validation. The companies have integrated Factorial’s FEST, or Factorial Electrolyte System Technology, solid state battery cells into a Dodge Charger Daytona development vehicle. Engineers will use the testing program to evaluate performance, durability, reliability, charging characteristics, and overall vehicle safety under everyday driving conditions.

One of the most impressive aspects of the technology is its performance potential. During previous validation testing, the FEST battery cells demonstrated an energy density of 375 Wh/kg while delivering rapid charging capability. The batteries were able to charge from 15 percent to 90 percent in approximately 18 minutes and operate across a wide range of temperatures. These figures could help address two of the biggest concerns among electric vehicle buyers, charging time and driving range.

Integrating the battery into a production based vehicle required significant engineering work from both companies. Stellantis developed a patented battery pack architecture designed specifically to accommodate the advanced solid state cells while maintaining the safety and durability standards required for automotive use. The project demonstrates how battery innovation extends beyond chemistry and requires complete vehicle integration to become commercially viable.

The Dodge Charger Daytona was selected as the development platform because it rides on Stellantis’ STLA Large architecture, a flexible platform designed for high performance electric vehicles. The platform is expected to support numerous future models across several Stellantis brands, making it an ideal test bed for next generation battery technologies.

The partnership between Stellantis and Factorial dates back several years and has steadily progressed from cell development to validation and now real world vehicle testing. What makes this latest milestone particularly important is that it moves the technology out of controlled environments and into the unpredictable conditions encountered by everyday drivers. The data collected during road testing will help engineers refine the battery system and prepare it for potential future production applications.

As automakers continue searching for ways to improve electric vehicle performance, solid state batteries remain one of the industry’s most anticipated advancements. If the road testing program proves successful, Stellantis could be among the first major automakers to bring the technology to consumers, offering vehicles with faster charging, longer range, and improved efficiency.

For Stellantis, the launch of this testing program is more than just another engineering milestone. It represents a significant step toward the next generation of electric mobility and a glimpse into what future Dodge, Jeep, Chrysler, Alfa Romeo, and Maserati electric vehicles could eventually offer drivers around the world.