GM's big new battery tech push

Catalyst with Shayle Kann · Jun 26, 2025 · 36m

Lithium-manganese-rich (LMR) batteries could offer a rare combination in energy storage: high energy density at lower costs. They swap much of the expensive nickel for abundant, affordable manganese. But technical hurdles — like poor cycle life, voltage decay, and long formation time — kept them on the sidelines.

Now GM says it’s solved these challenges. In May, it announced plans to mass produce LMR batteries starting in 2028. In energy density, the new chemistry would land between the two major alternative chemistries in the U.S., NMC and LFP.

So what does this new entrant mean for the U.S…