GM's Hidden Battery Innovation Could Reduce EV Expenses | Carscoops

      The newly designed LMR batteries will be used to power a truck that offers over 400 miles of range.

      General Motors (GM) and LG plan to begin production of lithium manganese-rich (LMR) batteries by 2028.

      These batteries utilize a distinct cell chemistry featuring a high content of manganese and minimal cobalt.

      The new LMR batteries are expected to provide a 33% increase in energy density compared to lithium iron phosphate (LFP) batteries, while remaining at a similar cost.

      GM and LG Energy have revealed their intention to deploy LMR prismatic battery cells in electric trucks and full-size SUVs. The company aims to be the first to implement LMR batteries, with production set to commence by 2028.

      GM asserts that LMR batteries represent a significant advancement because conventional battery cathodes rely on nickel, manganese, and costly cobalt, leading to increased prices and making electric vehicles (EVs) more expensive.

      The LMR batteries aim to solve this issue by utilizing a “higher proportion of more affordable manganese” and claiming to offer “greater capacity and energy density.”

      While specific details were limited, the companies mentioned that their new LMR prismatic battery cell possesses a 33% higher energy density than leading LFP cells, all while maintaining a similar cost.

      What does this mean? We can anticipate an electric truck capable of delivering over 400 miles (644 km) of range along with “substantial battery pack cost savings compared to today’s high-nickel packs.” This would be a positive development, especially since the 2025 Chevrolet Silverado EV LT Extended Range begins at $75,195 and has an EPA-estimated range of up to 408 miles (657 km).

      According to GM’s director of advanced battery cell engineering, the development of these batteries has taken a decade. Kushal Narayanaswamy noted that GM’s current electric trucks and SUVs utilize NMCA batteries with a composition of approximately 85% nickel, 10% manganese, and 5% cobalt. In contrast, LMR batteries consist of about 65% manganese and 35% nickel, with “virtually no cobalt.” Essentially, this means they use more affordable materials while minimizing the use of pricier ones.