GM builds $900M mini factory for cheaper EV batteries

GM is opening its Battery Cell Development Center in Warren, Michigan: 500,000 square feet, $900 million, up to 4–5 GWh of cells. First test LMR cells arrive in Q4 2026, with volume production at the Ultium plant in 2028.

• The center spans 500,000 square feet and costs $900 million
• Capacity reaches 4–5 GWh of cells per year
• First test LMR prismatic cells due in Q4 2026
• Volume production at the Spring Hill Ultium plant starts in 2028