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- Semi-solid 8S drone battery pack incorporating GEN4 silicon anode material delivers 15,900 mAh and 395 Wh/kg at the pack level
- Performance represents an estimated 23–36% improvement over selected publicly available LiPo and NMC drone battery pack benchmarks at the pack level [1]
- Results further support GEN4 as a format-flexible platform, now demonstrated across multiple battery architectures, including cylindrical, liquid-electrolyte, and semi-solid systems
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MONTREAL, April 30, 2026 (GLOBE NEWSWIRE) — HPQ Silicon Inc. (“HPQ” or the “Company”) (TSX-V: HPQ, OTCQB: HPQFF, FRA: O08), today announced that a semi-solid electrolyte 8S drone battery pack integrating Novacium’s GEN4 silicon anode material has achieved 15,900 mAh capacity, 457 Wh total energy, and 395 Wh/kg at the pack level. The battery pack, weighing 1,160 g, was produced by a commercial subcontractor and tested under controlled conditions [2].
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Conventional lithium-polymer (“LiPo”) drone battery packs typically achieve approximately 150–220 Wh/kg at the pack level, while more advanced lithium-ion and optimized drone battery systems generally range between 200–320 Wh/kg, based on publicly available data [1]. The GEN4 semi-solid configuration delivers 395 Wh/kg [3], representing an estimated 23–36% improvement over selected publicly available drone battery pack benchmarks, while maintaining a sub-1.2 kg pack mass[2].
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“These results highlight GEN4’s ability to deliver consistent performance across different battery architectures,” added Dr. Jed Kraiem, COO of Novacium. “The semi-solid electrolyte environment complements the structural stability engineered into GEN4, enabling high-capacity operation.”
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These results further support GEN4 silicon anode material as a platform technology capable of operating across multiple battery architectures.
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Performance has now been demonstrated across:
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- 21700 cylindrical cells exceeding 7,000 mAh [4],
- multi-configuration drone battery packs (8S2P, 8S3P, 6S3P) [5], and
- semi-solid electrolyte systems, as reported in recent releases.
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“This new milestone further validates our GEN4 technology and confirms that it’s not limited to a single format or chemistry,” said Bernard Tourillon, President and CEO of HPQ Silicon.
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Through its exclusive North American commercialization rights under the HPQ ENDURA+ brand, HPQ—together with Novacium—now benefits from access to industrial production capabilities spanning multiple battery formats and chemistries. This positions the Company to scale high-performance battery solutions across targeted applications, including mobility, defense, and advanced electronics.
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Additional technical details, including benchmarking methodology and a comparative energy density table, are available in a technical note on the Company’s website.
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Stakeholders seeking additional technical context are invited to consult the accompanying technical blog, which provides further detail on testing methodology and performance results.
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Engagement of European Focused Investor Awareness & Digital Outreach Services
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HPQ has entered into an agreement with Apaton Finance GmbH (“Apaton”), a European-based capital markets communications firm, based in Hannover Germany (email: [email protected]) to provide investor awareness and digital outreach services aimed at increasing the Company’s visibility among European and international investors. The engagement will support HPQ’s ongoing efforts to communicate recent technical and commercialization progress to a broader global audience.
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