HPQ Silicon Inc. announced that the first industrial batches of its lithium-ion battery cells, manufactured using its proprietary GEN3 silicon-based anode material, have been completed and are in transit to Montreal. The 18650 and 21700 cylindrical cells, developed under the HPQ ENDURA+ brand, mark a transition from pilot testing to pre-commercial production.
These initial cells will be evaluated by prospective customers in e-mobility, defense, and electronics sectors seeking higher-energy-density solutions compatible with existing lithium-ion infrastructure. HPQ’s silicon-based anode design is intended to improve cycle life and energy density, two key metrics for electric vehicle (EV) and energy-storage applications.
This milestone follows HPQ’s August 2025 update projecting an annual production capacity of up to 1.5 million cells through its partnership with Novacium SAS. With pre-commercial production now underway, HPQ will use these first batches to provide performance data and engage directly with potential partners in the growing EV battery supply chain.
Scalable manufacturing approach
Cell production for the HPQ ENDURA+ line is subcontracted to an established large-scale battery manufacturer. This model allows immediate integration into existing high-throughput lines without new infrastructure investment, offering scalability and flexibility while HPQ and Novacium focus on optimizing silicon-anode materials.
HPQ has finalized technical data sheets for both cell formats: the 18650 (4,000 mAh) and 21700 (6,000 mAh). The two achieve up to 1,000 charge cycles and are designed for applications requiring long life and high energy output. Comparable 18650 cells on the market typically offer 2,500 to 3,500 mAh capacity and fewer than 500 cycles.
Global demand for cylindrical lithium-ion cells continues to expand across EVs and stationary energy storage. By delivering higher-capacity cells compatible with established pack designs, HPQ aims to serve manufacturers seeking improved energy density within current price ranges.
Filed Under: Batteries, Technology News