As General Motors (GM) accelerates its vision for an all-electric future, the company’s focus on battery innovation has taken center stage. At the heart of GM’s EV transformation is the Rechargeable Energy Storage System (RESS)—a specialized in-house assembly zone within each of the company’s electric vehicle manufacturing plants.
RESS areas serve as the critical link between battery components and fully operational EVs. Here, modules, cooling systems, and other essential parts are assembled into full battery packs, which are then installed in vehicles on the production line. GM’s investment in in-house RESS capabilities ensures consistency, efficiency, and quality control across its expanding EV portfolio.
Providing a rare, hands-on perspective is Kurt Kelty, GM’s Vice President of Battery, Propulsion, and Sustainability. With over 30 years in the battery industry, Kelty recently visited the Factory ZERO assembly plant in Detroit-Hamtramck—home to the production of the GMC HUMMER EV, Chevrolet Silverado EV, GMC Sierra EV, and the Cadillac ESCALADE IQ1.
In a behind-the-scenes experience, Kelty joined assembly line workers to personally build battery packs. Reflecting on his experience, he said, “The best part of this experience was going through each function and experiencing what our team members face every day. Little things that you might not think are a big deal can be a showstopper for a battery pack. It gave me renewed respect for our operators and what they do on the line.”
Kelty’s immersive experience highlights GM’s dedication to not only technological advancement but also the human expertise driving its EV ambitions.
GM’s broader battery strategy is underpinned by Ultium Cells, its joint venture with LG Energy Solution (LGES). As the largest OEM battery cell producer in North America, Ultium Cells is central to GM’s plan to scale EV production and secure a resilient battery supply chain. Additionally, GM and LGES are pioneering lithium manganese-rich prismatic cells, aimed at powering future EV trucks and SUVs with improved range at reduced costs.
The automaker is also expanding its reach through Synergy, a new joint venture with Samsung SDI, further cementing its leadership in battery innovation.
As GM continues to localize and innovate, its RESS systems, advanced battery chemistries, and joint ventures position the company at the forefront of the global EV race—delivering not just vehicles, but a vision powered by clean, sustainable energy.
