CALB Group Co., Ltd. (3931.HK) manufactures lithium-ion batteries and related products for electric vehicles and energy storage systems. The company designs, develops, produces and sells electric vehicle batteries, energy storage system batteries, battery management systems, lithium battery materials and integrated solutions; it serves passenger vehicle, commercial vehicle, energy storage and emerging markets in Mainland China, Europe, Asia, the United States and internationally. Founded in 2007 and headquartered in Changzhou, Jiangsu province, People's Republic of China, CALB Group operates production facilities focused on power batteries with capacities exceeding 34 GWh as of 2022, targeting expansion to 90 GWh by 2025. In 2025, the company entered a long-term exclusive partnership with Ashok Leyland to invest over RMB 50 billion in developing and localizing next-generation batteries for automotive and energy storage applications in India.