LEOCH Battery announces that the 5MWh AC/DC integrated energy storage system Epoch-S2580/5015-40L has received China's first UL 9540 certification. This milestone reflects our commitment to delivering safe, reliable and innovative energy solutions that meet international standards.

Proven Reliability Through Rigorous Testing

Developed by LEOCH, the Cell-to-AC full-stack system underwent a comprehensive certification program. Under the witnessing and professional evaluation of UL Solutions, our engineering team integrated the DC battery cabin and the AC electrical cabin into a unified system.

The product then underwent multi-dimensional high intensity testing, covering electrical, mechanical, structural and environmental aspects. Each test validated performance under extreme operating conditions. Passing this stringent evaluation confirms the stability and reliability of the Epoch-S2580/5015-40L system and LEOCH's capability to deliver safety-focused, fully integrated energy storage solutions.

Built for Safety, Proven by Standards

UL 9540 is one of the world's most rigorous safety standards for energy storage systems. Achieving this certification required excellence at every level of design, engineering, and validation.

• Cell Level: Proprietary lithium cells developed through advanced mechanism research and optimized processes, ensuring intrinsic automotive-grade safety.

• Electrical Level: Optimized insulation clearance and creepage design, reinforced by AI-driven real-time NTC monitoring to mitigate breakdown and short-circuit risks.

• Structural Level: Triple-layer fire protection meeting EN 13501-2, IP55 ingress protection, and compliance with NFPA69 explosion-proof requirements.

• System Integration: Fused busbar technology, biomimetic leaf-vein liquid-cooling channels, and built-in aerosol-based fire suppression—establishing a dual active-passive safety shield.

These innovations reflect LEOCH's dedication to creating high-quality, future-ready energy storage systems that deliver both intrinsic and system-level safety.

A Milestone

Award of China's first UL 9540 certificate for an integrated AC/DC system validates the technical excellence of LEOCH's product and highlights our role in advancing safer, higher-performing energy storage solutions. This achievement facilitates broader market access and provides customers and partners with safety and reliability worldwide.

Looking Ahead

For LEOCH, this certification is not only a recognition of product safety; it also shows our ability to anticipate market needs and provide trusted, globally compliant solutions. As demand for safe, efficient and high-quality energy storage continues to grow, we will leverage our technological expertise, deepen collaboration with industry partners and expand our global presence with sustainability at the core.

Guided by our vision to become a global leader in smart demand-side energy, LEOCH remains committed to advancing a “Product–ESG–Society” development framework and contributing professional expertise to the global transition to clean energy.

About LEOCH BATTERY
Established in 1999, LEOCH BATTERY is a globally recognized leader in advanced battery power & energy management solutions. With an extensive global presence, LEOCH BATTERY operates 21 state-of-the-art manufacturing facilities. Our global footprint includes over 80 local service companies, and we proudly serve clients in over 150 countries and regions worldwide.
LEOCH BATTERY is your trusted partner for Battery Power & Smart Energy Solutions. Our diverse product and service portfolio is strategically designed to meet the needs of our clients, including: Energy Storage Systems, Telecom & Data Center Power Solutions, Starting Power Solutions, Motive Power Solutions, and Battery Recycling. Want more information, please visit www.leoch.com