Solid-State Batteries Hit the Road: 2026's Biggest EV Breakthrough

As of mid-2026, the development of solid-state batteries (SSBs) has reached a significant turning point, moving from laboratory testing into real-world vehicle integration and road trials.

In a major industry milestone, Stellantis and Factorial Energy have officially launched road testing of vehicles equipped with solid-state batteries in North America. A Dodge Charger Daytona development vehicle is currently being used to validate the performance, safety, and reliability of Factorial’s FEST (Factorial Electrolyte System Technology) cells in real-world conditions. These previously validated cells have demonstrated an energy density of 375 Wh/kg and fast charging from 15% to 90% in just 18 minutes.

Meanwhile, Dongfeng Motor has announced plans to begin mass production of its new solid-state battery technology in the second half of 2026. These batteries are expected to enable electric vehicles to achieve ranges exceeding 1,000 km (approx. 620 miles). Dongfeng’s technology has reportedly passed rigorous safety tests, including 50% deformation compression tests and high-temperature exposure up to 170°C without combustion.

While 2026 is being hailed as 'year one' for solid-state battery mass production, industry experts maintain a balanced perspective. Much of the current progress involves 'semi-solid' designs. True, all-solid-state batteries still face hurdles related to manufacturing scalability and costs, which remain 3 to 5 times higher than mainstream liquid lithium-ion batteries. Nevertheless, 2026 marks the first time this revolutionary technology is successfully transitioning out of the lab and onto public roads.