Cornex unveils 588 Ah LFP cell, new pack, battery platform design
Source：www.ess-news.com
While 300 Ah+ products still remain the industry standard, the move towards much larger capacity cells is rapidly progressing.
By Marija Maisch, Sep 26, 2025
Image: Cornex, WeChat
Innovation in the lithium-ion battery energy storage sector is accelerating at a breakneck pace, and the latest example comes from China’s Cornex, which released its newest generation of battery cells just six months after its previous launch.
The company’s newest 588Ah cell builds on a rapid progression of cell capacities – from 280Ah and 306Ah, to 314Ah, and most recently, 472Ah, which entered mass production earlier this year. Cornex plans to scale the 472Ah model to over 80 GWh of annual production, and expects to roll out the new 588Ah cell at commercial scale starting next year.
The 588 Ah cell delievers a gravimetric energy density of 190Wh/kg, a volumetric energy density of 419Wh/L, and a round-trip energy efficiency of 96.5%. Its cycle life exceeds 12,000 charge-discharge cycles.
Cornex notes that the new cell adopts the same manufacturing process as the 472Ah product, allowing for faster scaling. Performance enhancements are attributed to innovations such as: multi-level cathode particle size control, stable cathode skeleton design, and electrolyte self-healing technology.
Safety enhancements in the 588 Ah cell include structural design improvements to reduce the risks of internal short circuits and lithium plating and a directional pressure relief channel enabling millisecond-level venting of high-temperature airflow.
Alongside the new cell, Cornex also launched its 588-CTP2.0 energy storage PACK solution and the “Transformers” system platform, aimed at enhancing scalability, modularity, and deployment speed.
The “Transformers” system platform, named for its modular, flexible, and reconfigurable nature, allows for rapid deployment and customization across a wide range of scenarios. It delievers a standard 10-foot cabinet with a capacity of 3.13 MWh, and a standard 20-foot container with a storage capacity of 6.26 MWh.
This represents a slightly lower storage capacity compared to Cornex’s earlier 20-foot solution based on the 472Ah cell, which delivered up to 6.9 MWh in 1,500 V energy storage systems and up to 7.06 MWh when paired with 2,000 V high-voltage platforms.
At the product launch on Thursday, Cornex emphasized the block-style configurability of its latest platform, designed to adapt to site-specific requirements and support a broad range of applications – from power generation and grid operations to large-scale industrial and commercial projects.
Cornex claims this architecture can reduce the footprint of a 100 MW site by 20%, decrease the number of prefabricated cabins by 27% and cut operating costs by over 20%.
Founded in 2021, Cornex has quickly scaled operations both in China and internationally. Earlier this year, it signed a 2.5 GWh strategic cooperation agreement with UK-based Immersa, focusing on deployment of the 5 MWh CORNEX M5 energy storage container.