China's dominance in dual-use batteries poses a significant threat to US national security supply chains, impacting military hardware, robotics, and artificial intelligence. Alarmingly, China's growing footprint in the South Korean battery market, despite Seoul being the world's second-largest player, is evident as Chinese firms like BYD captured 30.9% of South Korea's EV registrations in Q1 2026 due to affordability.
This penetration enables key military capabilities for China, including advanced drones, robotics with superior payloads and ranges (e.g., Unitree's 180-minute battery life and 40kg payload), naval mining, and next-generation submarines, disadvantaging US and allied forces. The Department of Defense relies on thousands of battery types, many from Chinese firms, often lacking full supply chain visibility. The United States and South Korea must strengthen cooperation across the entire dual-use battery supply chain—mining, processing, refining, and manufacturing—to expand non-China capacity and prevent a global Chinese monopoly. Seoul balances economic ties with Beijing against security risks, making discriminatory regulations difficult, while China's domestic battery production rose 46% from 2023 to 2024, with 30% exported, reinforcing its global dominance.
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