SES AI Completes Production Ramp-Up At Its Drone Battery Plant In South Korea To Capacity 1M NDAA-Compliant Cells Per Year; Will Begin Expanding Plant To 3M Cells Annually By Q2 2027

SES AI Corporation ("SES AI," the "Company," "we" or "us") (NYSE:SES), a global leader in the development and manufacturing of AI-enhanced high-performance Li-Metal and Li-ion batteries, today announced that it has completed the ramp up of its drone battery plant in Chungju, Korea, to an annual production capacity of one million NDAA-compliant cells. Driven by stronger than expected customer demand, the Company plans to immediately begin expanding the plant further, to three million NDAA-compliant cells per year by the second quarter of 2027.

SES AI owns and operates the Chungju facility, which has produced NDAA-compliant cells since 2021. The total capacity will primarily cover high-silicon Li-ion cells and anode-free Li-Metal cells, with cell sizes ranging from 6Ah to 30Ah.