Mumbai, Sept. 30 -- Ultium Cells, the joint venture between General Motors and LG Energy Solution, will upgrade its battery cell manufacturing plant in Spring Hill, Tennessee, United States, to produce lithium manganese rich (LMR) battery cells for General Motors electric vehicles.

The facility is scheduled to begin retooling later this year, with completion expected in 2028. The conversion will enable mass production of prismatic LMR cells, a chemistry which it claims offers up to 33 percent higher energy density than lithium iron phosphate (LFP) at a similar cost profile.

The project will create 500 positions, expanding the plant's existing workforce of 1,200 employees. The upgrade follows the start of LFP cell production for energy s...