SES AI announced on October 4, 2026, that it has successfully concluded a capacity expansion project at its Chungju manufacturing site in South Korea. The upgraded production lines now support an annual output of roughly one million lithium metal and lithium-ion soft-pack batteries, primarily engineered for high-performance sectors such as unmanned aerial vehicles.
Alongside the physical expansion, the facility obtained ISO 9001:2015 quality management certification. Company officials noted that this accreditation is essential for manufacturing batteries that comply with the U.S. National Defense Authorization Act, positioning the plant to secure larger contracts with American and international drone operators.
The milestone underscores growing industrial demand for advanced energy storage solutions tailored to specialized aerospace and defense platforms. By aligning production capabilities with stringent regulatory standards, SES AI aims to strengthen its foothold in regulated high-value battery markets where supply chain compliance directly influences procurement decisions.