The global electric vehicle (EV) industry is rapidly evolving, and strategic collaborations are becoming essential to accelerate innovation. In a significant move, Samsung SDI and KG Mobility partner to co-develop advanced battery pack technologies built around Samsung SDI’s cutting-edge 46-series cylindrical battery cells. The partnership aims to power KG Mobility’s future EV lineup with higher performance, enhanced safety, and longer driving range.
The two South Korean companies formalized their collaboration by signing a memorandum of understanding (MOU) in Seoul on December 22, 2025. While no financial terms or timelines were disclosed, the agreement signals a long-term strategic alliance that goes beyond a single product. Under this partnership, Samsung SDI and KG Mobility will jointly design battery packs optimized specifically for KG Mobility’s next-generation electric vehicles.
At the heart of this collaboration is Samsung SDI’s 46-series cylindrical battery technology. First popularized by Tesla, 46-series batteries feature a simplified cell structure that significantly improves energy density, charging speed, and power output. Samsung SDI’s version goes a step further by incorporating high-nickel nickel-cobalt-aluminum (NCA) cathodes and a proprietary silicon carbon nanocomposite (SCN) anode, which helps reduce swelling while improving durability and battery lifespan.
Compared to conventional 21700 cells, the 46-series batteries offer up to six times higher energy capacity. A tableless design reduces internal resistance by nearly 90 percent, enabling faster charging and more efficient current flow. These improvements translate into an extended driving range, improved high-power performance, and enhanced safety under various driving conditions.
As Samsung SDI and KG Mobility partners, the collaboration also includes broader strategic cooperation. Both companies plan to exchange insights on global battery market strategies and pursue joint research and development initiatives. This includes future product planning aligned with the evolving demands of the global EV market.
Samsung SDI has already begun mass production of its 46-series lineup, which includes multiple formats such as 4680, 4695, 46100, and 46120 cells. The 4695 cell has already been shipped to an American micromobility customer, highlighting the technology’s commercial readiness.
By strengthening technological leadership and fostering innovation, Samsung SDI and KG Mobility partner to position themselves at the forefront of next-generation EV development. This collaboration marks a pivotal step toward more efficient, safer, and high-performance electric mobility solutions for global markets.
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