Hithium

Xiamen Hithium Energy Storage Technology Co., Ltd. — founded in 2019 in Xiamen, Fujian — is one of the fastest-growing energy storage companies in the world and the highest-valuation pure-play energy storage battery manufacturer currently active in sodium-ion development. The company completed Series C financing at a 30 billion yuan valuation ($4.2 billion), becoming Xiamen's first unicorn company, and has filed for a Hong Kong stock exchange listing in March 2025. Hithium's sodium-ion flagship is the N162Ah BESS cell, using a sodium iron ortho-pyrophosphate (NaxFePO4) polyanion cathode. The cell delivers a gravimetric energy density of at least 95 Wh/kg, volumetric energy density of 173 Wh/L, and a cycle life exceeding 20,000 cycles — the highest cycle-life figure published by any sodium-ion manufacturer in mass-scale production. The cell passed China's national assessment in October 2024 and received UN38.3 certification, with GWh-scale production commencing in Q4 2025. Hithium's strategic positioning is explicitly oriented toward the AI data center storage boom. The company's December 2025 launch of the Infinity Power Solutions lineup — the world's first lithium-sodium hybrid storage solution for AI data centers — combines an 8-hour lithium long-duration cell with a 1-hour sodium fast-response cell in a single integrated system. Commercial deliveries of the 6.9 MW / 55.2 MWh system are scheduled for Q4 2026. In August 2025, Hithium signed a global cooperation agreement with Samsung C&T and surpassed 100 GWh of cumulative battery shipments. Its Texas facility (Mesquite, 10 GWh module and system assembly) achieved mass production and shipment in August 2025, giving Hithium genuine US commercial footprint.