Announcement • Apr 23
HPQ Silicon Inc., Annual General Meeting, Jun 25, 2026 HPQ Silicon Inc., Annual General Meeting, Jun 25, 2026. Location: quebec, montreal Canada Announcement • Apr 17
HPQ Silicon Inc Announces GEN4 21700 Cells Surpass 7,000 mAh HPQ Silicon Inc. announced that 21700 cylindrical cells manufactured using Novacium SAS’s GEN4 silicon-based anode material have surpassed 7,000 mAh of discharge capacity, based on internal testing conducted under extended operating conditions. This result was achieved under a modified deep-discharge cycling protocol, with a lower voltage cutoff of 0.55V, compared to the industry-standard 2.5V. Commercially available 21700 graphite cells typically deliver between 4,800 and 5,000 mAh. The previous Novacium GEN4 record stood at 6,696 mAh under standard conditions (0.1C, 4.2V–2.5V, 25°C). Crossing the 7,000 mAh threshold required departing from conventional testing protocols and accessing a voltage window previously considered incompatible with long-term cycling stability in conventional lithium-ion chemistries. What makes this result scientifically significant is not merely the capacity figure, but the demonstrated cycle stability achieved alongside it. A discharge to 0.55V would typically result in significant and irreversible degradation in conventional graphite or silicon-based cells. Novacium’s GEN4 material completed 70 full cycles under this protocol with less than 2% capacity degradation, indicating that its silicon-based material may tolerate extended operating conditions beyond those typically used in conventional lithium-ion cells. These results suggest the potential for expanded operating windows in lithium-ion cell design, subject to further validation, optimization, and system-level integration. Potential applications may include high-energy-density use cases, where capacity per unit volume is a critical constraint; however, commercial applicability will depend on further development and validation. This result continues a consistent generational progression: from a 2,778 mAh graphite reference in 18650 formats, through GEN1 (~3,153 mAh), GEN2 (~3,808 mAh), GEN3 (~4,030 mAh in 18650 /~6,050 mAh in 21700), GEN4’s 6,696 mAh record under standard conditions, and now a 7,000+ mAh result in extended-range conditions. GEN5 is being developed with a target of achieving approximately 7,000 mAh under standard protocols by 2027. HPQ holds exclusive North American rights to commercialize Novacium’s GEN3 and GEN4 silicon-based battery materials under the HPQ ENDURA+ brand. Stakeholders seeking more detailed technical information on the results presented are invited to consult the following technical blog, which provides additional context supporting this release. Announcement • Apr 08
HPQ Silicon Inc Reports GEN4 21700 Cell Performance Among The Highest Reported Globally HPQ Silicon Inc. announced that 21700 cylindrical cells manufactured using Novacium's GEN4 silicon-based anode material have achieved an average discharge capacity exceeding 6,600 mAh, with a record cell reaching 6,696 mAh at 319.9 Wh/kg gravimetric and 906.2 Wh/L volumetric energy density. GEN4 is a 45% improvement over graphite baseline and 9% advance over GEN3. Commercially available 21700 graphite cells typically deliver between 4,800 and 5,000 mAh. Capacities above 6,500 mAh in this format remain limited to a small number of developers globally, including Molicel, EVE Energy, and Amprius. The result is the latest step in a consistent generational progression: from a 2,778 mAh graphite reference in 18650 format, through GEN1 (~3,153 mAh), GEN2 (~3,808 mAh), GEN3 (~4,030 mAh in 18650 /~6,050 mAh in 21700), to GEN4's current 6,600+ mAh average — a 45% improvement over the graphite baseline and a 9% advance over GEN3 in the same format. Based on current development progress, HPQ anticipates further performance improvements, with future iterations targeting the 7,000 mAh range as part of its ongoing material optimization roadmap. HPQ holds exclusive North American rights to commercialize Novacium's GEN3 and GEN4 silicon-based battery materials under the HPQ ENDURA+ brand. Stakeholders seeking more detailed technical information on the results presented are invited to consult the following technical blog, which provides additional context supporting this release. Internal capacity test results for a 21700-cell manufactured with GEN4 material by an industrial partner, under standard industry conditions (0.1C, 4.2V–2.5V, 25°C) compared to publicly available data. 
