CATL Launches 587Ah Energy Storage Cell, Redefining Global Battery Standards

CATL’s 587Ah Cell Redefines Energy Storage Competition as BYD Unveils 2710Ah System

Beijing, China – October 2025 — The global energy storage race has entered a new chapter. At the International Digital Energy Expo on September 18, BYD Energy Storage made headlines with the global debut of its new large-scale storage product, “Haohan”. The system integrates the world’s largest 2710Ah dedicated energy storage blade cell, boasting over 300% higher capacity than conventional cells and achieving a record energy density. Its smallest module, with a capacity of 14.5 MWh, also represents the highest in the world, signaling a major leap in grid-scale storage capability.

At the launch event, Cao Hu, Director of BYD’s Energy Storage and Battery Division, emphasized that “the key to storage profitability lies in cost construction. The Haohan system can reduce the levelized cost of electricity (LCOE) by 21.7%.”

BYD currently holds a 30% market share in the U.S. and 80% in the U.K., underlining its growing dominance in the global energy storage sector.

From 280Ah to 587Ah: The New Generation of Storage Cells

The evolution of storage cell capacity began in 2020, when CATL introduced the 280Ah cell, igniting the industry’s large-format revolution. Since then, manufacturers have iteratively advanced capacities — 300Ah, 314Ah, 320Ah, and beyond — with 314Ah becoming the mainstream standard for 5 MWh 20-foot battery cabinets.

However, as competition intensified, new contenders emerged. From 590Ah to 730Ah, and even over 1000Ah, cell makers such as EVE Energy, Sunwoda, and Haichen Energy entered the “third-generation” cell race. Haichen’s 1130Ah cell, released in late 2023, marked an industry milestone.

CATL’s 587Ah Cell: The Core of the Next-Gen Storage Era

In June 2025, CATL hosted its “587 Technology Day”, officially announcing mass production of its next-generation 587Ah energy storage cell — a product symbolizing CATL’s technical dominance and strategic counter to system integrators like BYD and Sungrow.
The 587Ah cell, applied in the TENER Stack system, achieves an energy density of 430 Wh/L through advanced stacking technology, extending cycle life by 20% and reducing system costs per kWh.

This innovation represents CATL’s vision to define the next industrial benchmark in large-scale energy storage — combining higher energy density, longer lifespan, and improved safety performance.

The New Hierarchy of Energy Storage Cells

Lingtech’s Direction: Custom Energy Storage Built on 280Ah–587Ah Platforms

Lingtech Group, a global battery energy storage manufacturer, announced it will adopt 280Ah, 314Ah, and 587Ah cells as its core platforms for new-generation liquid-cooled and air-cooled BESS systems.
By leveraging these large-format cells, Lingtech aims to provide customized, high-efficiency, and modular storage systems for industrial, commercial, and utility applications worldwide — ensuring lower LCOE and greater system reliability.

Lingtech’s lineup covers 215 kWh to 100 MWh+ BESS, targeting Europe, Southeast Asia, and the Middle East, and continues to expand its partnerships with leading renewable developers and distributors.

Conclusion

The unveiling of BYD’s 2710Ah and CATL’s 587Ah energy storage cells marks the arrival of a new ultra-capacity era. As global demand for energy storage soars, the industry is shifting toward larger, safer, and more cost-efficient solutions. With innovation-led players such as Lingtech joining this transformation, the global energy landscape is being rapidly rewritten — one gigawatt-hour at a time.

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