By ESS news
CATL unveiled a new sodium-ion battery for energy storage at ESIE 2026 in Beijing, expanding its sodium-ion offering from passenger cars, commercial vehicles and auxiliary power to utility-scale and commercial storage.
The company presented the product on April 1 under the theme “Double Sodium and Lithium Stars Creating Complete Energy Storage Solutions.” According to a company spokesperson, CATL positioned the new product as the world’s first platform-based sodium-ion battery specifically designed for energy storage. The battery is expected to be deployed commercially in 2026.
The key design feature is platform compatibility with CATL’s existing 587 Ah lithium storage cell. The sodium-ion battery uses the same enclosure dimensions, which CATL says enables a high degree of compatibility across system design, production lines and supply chains, reducing switching costs for customers. The cell is described as a 300+ Ah large format product with an energy density of approximately 160 Wh/kg, a system energy conversion efficiency of 97%, a cycle life of over 15,000 cycles at 80% capacity retention and an operating temperature range of -40 C to 70 C.
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