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Mercedes’ Solid-State Battery Hits the Road

By
Dave Nichols
March 21, 2025
3
min
Mercedes is leading the charge with solid-state batteries—lighter, safer, and delivering up to 40% more range. See how this innovation will transform EVs.

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We’ve talked about Solid-State battery packs at GreenCars before, but so far, they have been in the experimental stage. Now, for the first time, a major automaker is putting a Solid-State vehicle on the road for testing and delivers 25 percent more range.
Mercedes-Benz recently released word that it has an all-electric EQS model on the road that is equipped with a solid-state battery. Mercedes is partnering with an American company called Factorial Energy to develop the new battery pack that it says will give you at least 22 percent more range than current lithium-ion batteries.
In other words, this EQS 450+ with the new solid-state technology is clocking an EPA estimated 527 miles of range compared with the EPA’s estimate of 339 miles of range using conventional lithium batteries.
Plus, the EQS with the solid-state battery pack is both lighter and more efficient. Mercedes says the solid-state-equipped EQS gives you anywhere from 25 to 40 percent more range with the same size and weight of current lithium-ion batteries