24M Technologies, Inc.

24M Technologies is a Cambridge battery company that develops new ways to design and manufacture lithium-ion cells. Its core invention, SemiSolid lithium-ion, rethinks both the cell and the production process, stripping waste out of manufacturing, speeding production and shrinking the factory footprint so that capital costs fall by more than half. Its customers are manufacturers: the company works with EV battery makers, automakers and energy storage system integrators around the world.

Founded out of MIT labs and launched in 2010, 24M is led by battery-industry inventors, scientists and entrepreneurs and is headquartered a few blocks from MIT. Its technology suite has grown beyond SemiSolid cells to include an electrode-to-pack platform that frees designers from fitting standard cells, and an electrolyte called Eternalyte that holds up to 90 percent of capacity at minus 20 degrees Celsius. The tools are designed to drop into existing production lines across chemistries and applications.

What to Know

• 24M won a 2025 Reuters Automotive D.R.I.V.E. Honours award for automotive innovation.
• Its ETOP platform targets domestic U.S. production of batteries for EVs, eVTOL aircraft, energy storage and consumer electronics.
• The company highlights safety, energy density, cycle life and recyclability as areas its technology improves.
• The company has offices beyond Cambridge and posts open positions on its careers page.