Samsung SDI, a South Korean battery manufacturer, made headlines this week with the announcement of the early production launch of its 46-series cylindrical batteries. These next-generation 4695 battery cells are larger than their predecessors, the 21700-series, with six times the energy capacity. This advancement allows for fewer cells to achieve the same capacity, making them ideal for use in “micro-mobility” products.
Featuring high-nickel NCA cathodes and Samsung SDI’s SCN anode technology, the 4695 battery cells are produced at the company’s plant in Cheonan, South Korea, and assembled into modules at its subsidiary in Vietnam. The first shipment of these cutting-edge battery modules was celebrated at the end of March, marking the beginning of a new era for the company.
Originally scheduled for commercial production in 2026, Samsung SDI was able to accelerate the launch by over a year due to its superior manufacturing capabilities, technological advancements, and stringent quality control measures. The 46-series batteries boast high energy density, a longer lifecycle, and enhanced safety features to prevent swelling.
One of the key innovations of the 46-series batteries is their “tabless” design, which eliminates the need for traditional tabs by connecting electrodes directly to current collectors. This design improvement has reduced internal resistance by 90%, resulting in higher energy output and improved overall performance.
Looking ahead, Samsung SDI plans to expand its customer base to include mainstream electric vehicle manufacturers, positioning itself as a key player in the rapidly growing market for electric mobility solutions. With a focus on innovation and quality, the company is poised to lead the way in the development of advanced battery technologies for the future.
