GM unveils new EV battery tech that could offer more than 400 miles of range and lower costs

As automakers look to get more people in electric vehicles, they continue to make advancements in EV batteries—developments that add range, speed up charging times, or lower costs, all of which entice customer adoption. Now, General Motors says it has developed a new kind of EV battery that provides a higher range at a more affordable price, and that it aims to become the first carmaker to deploy the technology. 

Called lithium manganese-rich (LMR) prismatic battery cells, these batteries use a higher amount of less-expensive minerals, like magnesium, rather than more of the most expensive minerals like cobalt and nickel. Most EVs in the U.S. use lithium-ion batteries, which contain cobalt and nickel, minerals that have seen price increases as EV battery demand soars. GM and LG Energy Solution plan to start commercial production of these batteries in the U.S. by 2028.

In addition to cutting costs, LMR batteries also offer more power. Engineers at GM and LG Energy Solution say their LMR prismatic battery cell has a 33% higher energy density than lithium iron phosphate based cells. 

This means GM could offer an electric truck with more than 400 miles of range at a more affordable price. In 2024, GM said lithium iron phosphate batteries could cut $6,000 from the cost of battery packs in its electric trucks and full-size SUVs. With this new LMR battery technology, the company expects to achieve even more savings. It’s not exactly clear yet what that will translate to for a vehicle’s sticker price. (GM’s Chevrolet Silverado electric truck, with a max range of 492 miles, currently starts around $73,000 but can go above $87,000.) 

GM’s work to develop LMR prismatic battery cells began in 2015, but researchers were studying LMR technology long before that. Though they promised high range for a lower price, historically LMR batteries have been marred by shorter life spans. GM says it has solved this issue, and that its new LMR battery cells match the life span of current high-nickel batteries. 

The LMR batteries contain “virtually no cobalt,” per GM, but do still contain nickel, just at a lower percentage than typical battery cells. GM prototyped these LMR batteries at its Wallace Battery Cell Innovation Center in Warren, Michigan.

The batteries are called LMR “prismatic” cells because they’re rectangular, whereas most EV lithium-ion batteries are cylindrical or, increasingly, pouch-shaped. (GM has been using pouch cells for years in the U.S., while using cylindric cells in China.) With a rectangular design, GM says the cells can be more efficiently packaged into trucks and SUVs.

These battery cells also use fewer components; with LMR batteries, GM says it can reduce the number of parts in its battery packs by 50%, which can cut weight from notoriously heavy EVs. GM expects to save hundreds of pounds in battery mass with LMR batteries.

GM’s announcement comes weeks after Ford announced its own LMR battery breakthrough. Charles Poon, Ford’s director of electrified propulsion engineering, announced at the end of April that the automaker is currently producing LMR cells at its pilot production line, and is working to scale LMR battery cell development and include these batteries in future vehicles “within this decade.”