Samsung SDI Buys GM Stake in SynergyCells as Ultium Cells Restarts in Ohio
Samsung SDI ended its SynergyCells joint venture with GM by buying GM’s 49.99% stake for the $3.5B battery plant under construction in New Carlisle, Indiana, taking full control and planning first for stationary storage batteries. Separately, Ultium Cells restarted battery cell production at its Warren, Ohio plant after a seven-month shutdown, targeting launch-ready cells by end-2026.