HPQ Silicon Inc. has received UL 1642 certification for its HPQ ENDURA+ lithium-ion battery cells, clearing the primary safety requirement for commercial sales in the United States. The certification applies to both 18650 (4,000 mAh) and 21700 (6,000 mAh) cell formats, demonstrating compliance with the safety standards expected by North American original equipment manufacturers, integrators, and end-market customers. This milestone follows the company’s earlier UN 38.3 transport certification, completing the core regulatory framework for the HPQ ENDURA+ cell platform.
UL 1642 is recognized as the technical benchmark for selling lithium-ion cells in the U.S. market. Certification involves a comprehensive suite of electrical, mechanical, and thermal stress tests that simulate real-world use and abuse scenarios. HPQ ENDURA+ cells met requirements for short-circuit protection, overcharge and forced discharge resistance, thermal stability, impact and crush integrity, and other mechanical and electrical abuse conditions. Meeting these standards at the cell level is essential for downstream integration into certified battery packs and final products.
“Certifying at the cell level, is where real market access begins in the United States,” said Bernard Tourillon, President and CEO of HPQ Silicon Inc. “UL 1642 gives OEMs and integrators confidence that safety has been engineered into the core of the product, not added later at the system level. For HPQ ENDURA+, this removes a key qualification hurdle and allows commercial conversations to focus on performance, scalability, and integration rather than regulatory risk.”
This regulatory clearance marks HPQ’s transition from development and validation to commercial execution. The company is poised to accelerate customer qualification programs, integrate its cells into supply chains, and pursue early commercial deployment. This shift underscores HPQ’s progress from advanced battery research and development to market-ready solutions.
HPQ Silicon, based in Montreal, specializes in advanced materials innovation and next-generation process development. In collaboration with its R&D partner Novacium, the company is advancing silicon-based anode materials, commercializing the HPQ ENDURA+ cell platform, and exploring clean-hydrogen and waste-to-energy technologies. HPQ also is developing proprietary processes to produce fumed silica and high-purity silicon with zero-carbon emissions, aiming to support global energy storage and net-zero goals.
Source: PR Newswire
