Mr. V-Bond Lee reports

VOLT CARBON REPORTS SECOND U.S. PATENT AND NEW HIGH-PERFORMANCE LITHIUM-METAL BATTERY RESULTS

Volt Carbon Technologies Inc. has confirmed the issuance of a second United States patent supporting the company's dry-separation graphite platform and reporting of new technical results from its lithium-metal battery development program. Recent work at the company's Guelph facility includes long-duration cycling, high-rate discharge testing and expanded low-temperature evaluations.

1. Second patent issued by the United States Patent and Trademark Office: "Method and System for Aerodynamic Air Classification."

Volt Carbon has received formal notification from the United States Patent and Trademark Office confirming that its patent allowance previously announced on Oct. 2, 2025, will be issued as USPTO patent No. 12491538 on Dec. 9, 2025. This represents the company's second issued patent for its air classification technology, further strengthening its intellectual property portfolio and supporting the aerodynamic separation method at the core of Volt Carbon's dry separation graphite purification technology. The company has also released a new demonstration video showing the air classifier operating in real time.

2. Lithium metal results: high cycle life and high discharge capability

Volt Carbon has undertaken a series of evaluations across multiple li-metal loadings to determine the most effective configurations for both extended cycle life and high discharge performance. These studies form part of the company's continuing effort to refine its next generation lithium metal architecture.

Volt Carbon is pleased to report that its lithium metal battery has now achieved 1,600 cycles at a 0.75C discharge rate. This long-duration cycling result demonstrates stable behaviour over a significant number of cycles. The cathode loading used for this single layer pouch cell is projected to support a 340-watt-hour-per-kilogram lithium metal configuration with parallel testing under way to advance the company's 400 Wh/kg design. Cycle life determines real-world battery longevity. Maintaining stability for 1,600 cycles indicates meaningful progress toward durable lithium-metal cells.

Cells tested at a 10C discharge rate using the company's low-temperature electrolyte formulation demonstrated strong capacity retention under high power demand. This result highlights the ability of the chemistry to deliver rapid discharge performance while maintaining stability. Together, these findings support ongoing refinement of Volt Carbon's lithium metal cell designs for applications requiring both high power capability and extended service life. 10C discharge is an extreme stress test. The retention shown below demonstrates the chemistry's ability to deliver rapid power without collapse.

3. Li-metal battery low temperature performance update

Volt Carbon has completed a new series of cold-temperature evaluations on its lithium-metal coin cells at the company's Guelph plant. The left panel presents the voltage profile of the updated 2025 cells during discharge at extreme sub-zero temperatures, demonstrating stable behaviour and strong operating characteristics under cold-load conditions; a region where conventional chemistries typically collapse.

The right panel compares the 2025 results with the data disclosed in the company's Sept. 16, 2024, press release, showing clear gains at negative 40 degrees Celsius, negative 60 degrees Celsius and negative 70 degrees Celsius, along with continued operation in temperature ranges where most lithium-ion architectures cease to function. Very few chemistries operate reliably below negative 40 degrees Celsius, and the combined panels highlight meaningful gains in extreme-cold stability, improved low-temperature discharge behaviour and a clear advancement over the company's previously reported performance.

In a separate evaluation using a different cell format, Volt Carbon also completed a comparative low-temperature test of its Solid UltraBattery pouch cell against a commercially available 21700 lithium-ion cell. The Solid UltraBattery pouch cell continues delivering usable performance at negative 20 degrees Celsius and negative 40 degrees Celsius, while the commercial 21700 cell shows a rapid decline at negative 20 degrees Celsius and complete failure at negative 40 degrees Celsius.

This pouch-cell benchmark illustrates the advantages of Volt Carbon's lithium-metal architecture in cold environments where conventional lithium-ion chemistries typically experience sharp performance loss. For aerospace, UAV (unmanned aerial vehicle) systems, northern-climate EV platforms and defence applications operating in deep-cold conditions, this separation in low-temperature capability is a differentiating engineering advantage.

4. Expandable graphite testing video release

Volt Carbon is releasing a new video demonstrating the behaviour of its dry separated expandable graphite under simulated battery thermal runaway conditions using high heat. The test illustrates the expansion characteristics of the material and highlights its potential suitability for applications in thermal management, fire protection and other advanced carbon products where rapid heat exposure is a design consideration. The release of this video supports the company's ongoing efforts to advance and scale its expandable graphite product line. Volt Carbon continues to evaluate material performance under multiple thermal conditions as part of its development and market readiness activities.

V-Bond Lee, president and chief executive officer, stated: "Demonstrating strong retention at a 10C discharge rate is important for aerospace and UAV applications that require rapid power delivery. These performance levels are generally not seen together in lithium-metal systems, making the results important for engineering teams evaluating high-power or cold-weather platforms. Strengthening our IP portfolio alongside this technical progress remains an important part of our strategy."

About Volt Carbon Technologies Inc.

Volt Carbon Technologies, headquartered in Calgary, is a publicly traded carbon science company focused on energy storage and green energy solutions. The company operates a lithium-ion battery plant and a graphite processing facility in Guelph, Ont. Volt Carbon also holds mining claims across Ontario, Quebec and British Columbia, supporting its commitment to sustainable resource development.

We seek Safe Harbor.