Samsung SDI will buy General Motors’ entire stake in their $3.5 billion Indiana battery joint venture, giving the Korean battery maker its first wholly owned production plant in North America. Once the transaction is complete, the Indiana facility will become Samsung SDI’s first wholly owned battery plant in North America. Samsung SDI and GM have also signed a joint development agreement for prismatic EV batteries. Samsung SDI plans to add an energy storage system battery line at the Indiana plant, allowing it to target fast-growing US demand beyond the slowing electric vehicle market. “This decision reflects shifting market dynamics while allowing us to preserve our strategic partnership with GM,” a Samsung SDI official said.