Mercedes-Benz is testing the first solid-state battery-powered EV in the world, which is expected to have a driving range of more than 621 miles.
Mercedes achieved a significant milestone when it brought its solid-state EV battery technology from the laboratory to the real world. The company said that by partnering with US-based Factorial Energy, it has formally put “the first car powered by a lithium-metal solid-state battery on the road.”
Early this month, after the initial lab testing at the end of 2024, on-road testing in a modified EQS started. The solid-state battery and other components require a small modification of the EQS.
Mercedes-Benz and Mercedes AMG High-Performance Powertrains (HPP), a top supplier to Formula 1, designed the new battery pack.
Since 2021, Mercedes and Factorial Energy have collaborated to introduce the new battery cells, which promise increased efficiency, quicker charging, and a longer driving range. The first solid-state battery cells based on Factorial’s proprietary FEST (Factorial Electrolyte System Technology) were delivered last summer.
In September, Mercedes and Factorial introduced the more sophisticated all-solid-state Solstice battery, going one step further. Collaborative development is underway to create the new batteries that will power Mercedes’ upcoming electric vehicles. A solid electrolyte based on sulphide makes the battery safer and more effective.
According to Factorial, the new Solstice battery is anticipated to offer 80% more driving range than existing lithium-ion batteries thanks to its “breakthrough” energy density of 450 Wh/kg.
Mercedes stated that the 12-module battery housing of the EQS was adaptable enough for various configurations, even though complete specifications are still pending confirmation.
Mercedes anticipates a 25% increase in driving range with the new battery. A driving range of more than 620 miles would be suggested by the present EQS 450+ rating, which has a range of up to 511 WLTP miles.