GM said its new Ultium batteries are unique in the industry because the large-format, pouch-style cells can be stacked vertically or horizontally inside the battery pack.

The agreement, approved by nearly 1,000 UAW members working for the Ultium Cells joint venture, improves upon gains achieved in the union's national contract with GM for those workers, the union said.

DELTA TWP. — A coalition of regional agencies and leaders wants more than $186 million in state and local incentives for the Ultium Cells battery plant to be transferred to LG Energy Solution.

That $2.8 billion site originally was planned for use by Ultium Cells LLC, a 50-50 partnership between GM and South Korea-based LG Energy Solution Ltd. But a bumpier-than-expected transition to ...