November 2, 2025: Lead and lithium battery giant Leoch said on October 16 it had secured what it said was China’s first UL 9540 certification for its Epoch integrated energy storage system.

Leoch said certification of the 5MWh AC/DC lithium ESS, Epoch-S2580/5015-40L, marked a milestone in the group’s development of innovative systems that are recognized as meeting international standards.

The cell-to-AC full-stack system underwent a comprehensive certification program and Leoch’s engineering team integrated the DC battery cabin and AC electrical cabin into a unified system.

The product then underwent high intensity testing, covering electrical, mechanical, structural and environmental aspects, Leoch said. Each test validated performance under extreme operating conditions.

Leoch’s proprietary lithium cells include fused busbar technology, biomimetic leaf-vein liquid-cooling channels and built-in aerosol-based fire suppression.

Leoch said the certification recognizes product safety and shows the group’s ability to anticipate market needs.

“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,” Leoch said.

Group chairman Dong Li said in April that Leoch was stepping up its commercial march into the lithium ion battery market. “While deeply engaged in the lead acid battery sector, we are accelerating our strategic transformation towards the lithium ion battery field to seize the opportunities brought about by the global energy structure transformation.”

He said the group’s R&D team in Singapore was accelerating the improvement of a new generation of lithium products, including batteries and battery management systems, which had already passed certifications in “multiple European countries” and were awaiting various regulatory approvals before being launched on the market.