Mercedes-Benz said on Tuesday that a modified EQS electric sedan equipped with solid-state batteries traveled nearly 750 miles (1,205 km) on a single charge, marking a new milestone for long-range electric vehicles.
The test, conducted on public roads from Stuttgart, Germany, to Malmö, Sweden, left the vehicle with an estimated 85 miles of range remaining. Mercedes said the solid-state battery increased usable energy by 25% while maintaining similar weight and size compared with standard EQS lithium-ion batteries.
Markus Schäfer, Mercedes’ technology chief, described the development as “a true gamechanger for electric mobility,” emphasizing that the battery delivers both in laboratory settings and on real-world roads.
The company is developing the batteries in collaboration with Mercedes-AMG High Performance Powertrains and U.S.-based Factorial Energy, which also works with Hyundai and Stellantis.
Mercedes plans to introduce solid-state batteries into series production by the end of the decade. Other automakers, including Volkswagen, Toyota, BMW, Nissan, and Honda, as well as major battery manufacturers CATL and BYD, are also targeting the mid-to-late 2020s for the commercialization of solid-state battery technology.
