HPQ’s Gen4 21700 UL 1642 Certification: The Commercial Readiness Moment

HPQ’s Gen4 21700 UL 1642 Certification: The Commercial Readiness Moment

From AGORACOM Small Cap CEO Interviews by AGORACOM

July 20, 2026 · 20 min

About this episode

HPQ Silicon's ENDURA+ Gen4 21700 cells achieve UL 1642 certification, marking a significant step towards commercial readiness.

Here’s a tighter, more concise version while keeping the key points: When a battery company improves performance and secures recognized safety certification, discussions shift from “does it work” to “how do we move forward.” HPQ Silicon announced that its ENDURA+ Gen4 21700 cells achieved UL 1642 certification, with a rated capacity of 6,500 mAh, an 8.3% increase over the previously certified 6,000 mAh Gen3 platform. Both generations are now certified, supporting customer testing, battery pack integration, and commercial evaluation. This is not just a technical milestone. It is a critical commercial step as HPQ moves toward first orders. WHAT YOU NEED TO KNOW • Commercial checkpoint: Gen4 achieves UL 1642 certification, clearing a key requirement for customers • Performance progression: 6,500 mAh capacity, up 8.3% from Gen3 • Two certified platforms: Both Gen3 and Gen4 are now ready for evaluation • Customer activity: Multiple parties testing Gen4, with certification no longer a barrier STRATEGIC IMPLICATIONS UL 1642 certification gives OEMs and integrators confidence that HPQ’s cells meet a recognized safety standard. Achieving this while increasing capacity shows the company…

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