CATL Launches Mass Production of 587Ah Cell, Defining the ＂Optimal Solution＂ for Large-Scale Energy Storage

Shanghai, June 10 – At its "True Power" 2025 Energy Storage 587 Technology Day held today, Contemporary Ampere Technology Co., Limited (CATL) officially announced the mass production and delivery of its next-generation large-capacity energy storage cell – the 587Ah cell. While pioneering the mass production of this cell, CATL, guided by its philosophy of creating real value, engaged the industry in exploring the optimal solution for next-gen large storage cells and fostering orderly, healthy development.

CATL's 587Ah Cell: Defining the Optimal Solution for Large-Scale Storage

The industry consensus is that bigger isn't always better for energy storage cells. After three years of R&D and testing, CATL's 587Ah cell strikes the optimal balance between regulatory compliance, system integration, station matching, and electrochemistry.

The cell achieves a breakthrough in integration space utilization. Based on the mainstream 20-foot container and 1500V PCS voltage/power range, CATL optimized the system structure through precise calculations. This significantly reduces the number of battery modules and cabinets, cutting the total system components from 30,000 to 18,000. The Tianheng energy storage system, integrated with this cell, strictly adheres to the 45-ton hazardous goods transport weight limit, eliminating the safety risks and regulatory violations associated with overweight containers common in the industry.

The 587Ah cell delivers comprehensive improvements in core requirements for storage projects: safety & reliability, energy density, lifespan degradation, and system efficiency. It boosts the full lifecycle return on investment (ROI) by 5% compared to the previous generation.

Benefiting from globally leading intelligent manufacturing, the 587Ah cell also offers industry-leading quality and delivery capabilities. It achieves a defect rate at the PPB (parts per billion) level, a safety control level of 7.5 Sigma, a 50% increase in production cycle speed, and a 57% reduction in carbon emissions.

Defining True Value in Storage: Real Performance, Real Safety, Real Reliability

The core mission of the energy storage industry is to provide customers with truly reliable, efficient, and safe solutions. The CATL 587Ah cell delivers true value through Real Performance, Real Reliability, Real Safety, and Real Delivery.

Real Performance: Through revolutionary upgrades to the LFP (lithium iron phosphate) material system, the 587Ah cell achieves an energy density of 434Wh/L, a 10% increase over the previous generation, boosting system energy density by 25%. Breakthroughs in mechanical structure, chemical system, and electrode design enable an initial round-trip energy efficiency (RTE) of 96.5% during charge/discharge cycles. Pioneering self-repairing anion electrolyte technology and a multi-functional group composite additive for film formation grant the cell verifiable ultra-long cycle life.

Real Reliability: Addressing the traditional challenge of lithium battery self-discharge, the 587Ah cell significantly enhances reliability through innovative material and structural design, precise data prediction, and stringent manufacturing controls. Its inherent failure rate is an order of magnitude lower than that of laminated cells.

Real Safety: Featuring a "Triple Defense Mechanism" comprising a safety electrolyte, non-propagation anode, and heat-resistant separator, the 587Ah cell achieves zero fire or explosion under conditions like overcharge, thermal runaway, and nail penetration. It has passed rigorous tests including GB/T 36276 and the mandatory national standard GB 44240.

CATL has continuously iterated the industry's mainstream storage cell standards with products like the 280Ah and 314Ah cells. To date, its globally deployed systems, exceeding 256GWh across more than 1,000 projects, maintain a record of zero major safety incidents. As the storage industry transforms under policy and market drivers, the CATL 587Ah cell, with its exceptional performance and forward-looking design, is set to become the new benchmark for quality and value in energy storage.