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First silicon-anode cylindrical cells enter production for EVs and energy storage

By Michelle Froese | September 2, 2025

HPQ Silicon Inc., a developer of advanced materials and critical processes, has begun production of the first HPQ ENDURA+ cylindrical battery cells incorporating Novacium’s GEN3 silicon-based anode technology.

Designed to address the growing demand for higher-performance batteries in electric vehicles (EVs) and large-scale energy storage, these cells represent a significant step toward integrating silicon-based anodes into next-generation lithium-ion platforms.

HPQ ENDURA+ battery prototypes in 18650 and 21700 formats.

The first batch, which includes 18650 and 21700 form factors, is scheduled for delivery to HPQ by the end of September 2025. Technical data sheets for these cells, developed with the manufacturer, are now available to prospective customers and industrial partners.

The HPQ ENDURA+ 18650 (4,000 mAh) and 21700 (6,000 mAh) cells demonstrate higher energy density and a lifespan approaching 1,000 full charge–discharge cycles, results that have been validated by independent testing.

This development follows the launch of the HPQ ENDURA+ brand and recent agreements aimed at advancing commercialization of lithium batteries with GEN3 silicon-based materials in North America.

With demand for higher-capacity, longer-life batteries continuing to grow in the EV and energy storage sectors, HPQ’s efforts contribute to the broader adoption of silicon anode technologies within the lithium-ion supply chain.

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Filed Under: Batteries, Technology News
Tagged With: hpqsilicon
 

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