Mercedes has begun testing an EQS equipped with a solid state battery. It provides 25% more range than a lithium-ion battery of the same size and weight. Solid state batteries offer higher energy densities and safety benefits over traditional batteries.

Mercedes-Benz and American battery start-up Factorial Energy have developed a prototype EQS equipped with a solid-state battery. The companies claim it's the "world's first solid-state battery vehicle from a global OEM." It’s already out on the road doing test runs.

A version of the Mercedes EQS is testing solid-state cells from Factorial teasing a 25% boost in energy density. Will it really deliver the 621-mile target?

Mercedes-Benz integrated the solid-state battery, with cells from U.S.-based solid-state battery leader Factorial Energy, into a slightly modified EQS.

Mercedes-Benz has apparently started testing a solid-state battery from partner Factorial Energy in a modified EQS this month. In the coming weeks, the

The German automaker has unveiled that a prototype EQS, equipped with a solid-state battery developed in collaboration with US startup Factorial Energy, has begun real-world testi