Hithium Energy Storage Releases 785Ah Sodium-ion Cell and 4MWh System, Mass Production in 2027

en.Wedoany.com Reported - On September 16, Hithium Energy Storage unveiled its next-generation integrated sodium-ion energy storage solution at the "Witnessed by Day and Night" online product launch. The solution includes the 4MWh sodium-ion energy storage system ∞Power N4.0MWh equipped with the ∞Cell N785Ah high-capacity sodium-ion battery, and it was made clear that full-chain mass production and delivery will begin in 2027.

The system is designed for a 30-year service life. In the first half of 2026, Hithium Energy Storage ranked TOP2 globally in energy storage battery shipments. With this increased investment in sodium-ion technology, Hithium Energy Storage aims to leverage its integrated capabilities across materials, cells, manufacturing, system integration, station applications, and full-lifecycle services to move sodium-ion technology from technical validation to large-scale application and accelerate the pace of industrialization.

Dr. Yi Ziqi, Director and Chief Technology Officer of Hithium Energy Storage, stated that for energy storage technology to be applied on a large scale, two issues must be addressed simultaneously: whether the price is affordable enough, that is, affordability; and whether resources can be obtained stably over the long term, that is, accessibility. Sodium resources are abundant and widely distributed, offering a new path to improve resource security and supply chain stability for the energy storage industry. The cost line Hithium Energy Storage has set for its next-generation sodium-ion energy storage system is to be at least on par with lithium batteries when lithium carbonate prices are at 150,000 yuan/ton. As the sodium-ion material system, manufacturing processes, and industrial chain gradually mature, sodium-ion technology is expected to move further from an energy technology toward infrastructure. Greater resource availability and a more stable supply chain will also enhance the long-term investment value of heavy assets such as energy storage.

Industrialization is not just about mass-producing a single product; it also requires the formation of complete integrated industrial capabilities across materials, manufacturing, systems, and applications. Hithium Energy Storage is transferring the R&D, manufacturing, quality, and industrial chain integration experience accumulated in the lithium battery field to sodium-ion technology, laying the foundation for large-scale deployment of sodium-ion technology through integrated R&D and engineering practice from underlying materials to end-use stations.

For sodium-ion technology to be industrialized, the cell is the first problem to be solved. Dr. Wang Shiwen, President of the Hithium Energy Storage Battery Research Institute, stated at the launch event that it is necessary to start from the most fundamental chemical materials and retrace the path the lithium battery industry has taken over the past 30 years. To this end, Hithium Energy Storage is advancing integrated innovation in cell design and manufacturing processes in parallel around underlying material systems such as cathode and anode materials and electrolytes, developing the ∞Cell N785Ah high-capacity sodium-ion battery dedicated to energy storage.

At the material level, the cathode is an NFPP material jointly developed by Hithium Energy Storage and its partners, with a phase purity of 97%. The anode uses self-developed hard carbon material, which, through technologies such as pore structure regulation and surface defect repair, balances low expansion and high rate capability while greatly improving the battery's calendar life. The electrolyte uses a "micro-bonding + targeted repair" formula to improve film-forming stability and suppress consumption.

The cell manufacturing process has achieved three breakthroughs: ultra-thick coated electrodes are used to compensate for the shortfall in energy density; the explosion-proof valve and weld seams adopt long-life structural component designs and have passed more than 20,000 breathing tests, solving the fatigue problem caused by the accumulation of small deformations under massive cycling; at the same time, wide-format large stacking technology from the advanced manufacturing system of lithium battery production lines is introduced to break through the bottleneck of large-scale sodium-ion mass production. Based on coordinated innovation in the material system and cell manufacturing process, the ∞Cell N785Ah has a native long cycle life of 20,000 cycles and can support 2 to 8 hours of operation, covering the mainstream duration scenarios of current power energy storage; the product is also fully compatible with the cell production lines and integration lines of Hithium Energy Storage's kiloampere-hour lithium battery general manufacturing platform, which facilitates the rapid introduction of sodium-ion technology into mature manufacturing systems and enables large-scale mass production.

As a next-generation sodium-ion energy storage solution, ∞Power N4.0MWh forms integrated advantages across material systems, cell manufacturing, system integration, and stations. In addition to being equipped with the ∞Cell N785Ah, the system adopts a self-developed battery management system BMS dedicated to sodium-ion technology, with whole-process state of charge (SOC) estimation accuracy of ≤2.5%. The sodium-ion dedicated architecture is compatible with 800V to 1500V power conversion systems (PCS), allowing the existing ecosystem to be directly connected, and the rated power utilization of the PCS is increased by more than 20% compared with the previous generation sodium-ion system, lowering the ecosystem threshold for large-scale application of sodium-ion technology.

In terms of system efficiency and operation and maintenance, ∞Power N4.0MWh reduces station area by 30% through architectural optimization, and its all-weather comprehensive energy efficiency reaches more than 88%. The system adopts a proprietary air-liquid hybrid cooling mode and AI intelligent thermal management system, and has a built-in meteorological monitoring and warning system, which can intelligently select a more economical cooling mode based on real-time meteorological data, reducing operational auxiliary losses by 30% and standby auxiliary losses by 50%. What truly determines the long-term value of the system is reliability design covering the entire product lifecycle.

Hithium Energy Storage will leverage its integrated engineering capabilities in materials, cell manufacturing, systems, and operation and maintenance, and adopt a pre-modular minimalist operation and maintenance design, giving ∞Power N4.0MWh an ultra-long 30-year service life, matching the lifespan of traditional power equipment.

Dr. Wang Shiwen stated that 30 years represents 10,950 days and nights of jointly verified commitment, and it is the long-term promise Hithium Energy Storage hopes to deliver to customers. This means that, for the first time, electrochemical energy storage can truly be viewed from an infrastructure perspective, calculated using infrastructure cost logic, and required to have a service life according to infrastructure standards.

Hithium Energy Storage's next-generation integrated sodium-ion energy storage solution is planned to begin full-chain mass production and delivery in 2027. Starting from large-scale power energy storage, Hithium Energy Storage's next-generation sodium-ion technology will also enter commercial and industrial and household scenarios, and extend to affordable energy use, serving different application scenarios with different technologies and products, and continuously building integrated energy storage solutions for all scenarios.

At the launch event, Hithium Energy Storage announced the launch of the "∞Edge" Pioneer Initiative. Over the next three years, Hithium Energy Storage will place batteries and systems of different technologies and forms under various extreme environments for testing, continuously disclose progress, and gradually release various ∞Power Next extreme-scenario technology packages, promoting electrochemical energy storage to become more affordable and reliable energy infrastructure, and bringing the levelized cost of storage (LCOS) across the full lifecycle into the era of "one mao per kilowatt-hour."