Ford Motor Co. (NYSE:F) and South Korean battery manufacturer SK On have agreed to end the battery manufacturing venture amid EV headwinds due to regulatory changes announced by President Donald Trump and falling demand.Ford, SK On End PartnershipThe South Korean battery manufacturer, a subsidiary of SK Innovation, said it has ended the EV battery partnership at two plants in the U.S. to shift focus towards Energy Storage Systems. "The production start schedule for the Tennessee plant remains flexible at th ...