BioLargo’s Cellinity Battery Technology Achieves Breakthrough Performance in Grid-Scale Energy Storage Evaluation

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Independent Evaluation Confirms Breakthrough Performance of BioLargo’s Cellinity Battery Technology for Grid-Scale Energy Storage

**WESTMINSTER, CALIFORNIA / ACCESS Newswire / June 18, 2025** – BioLargo, Inc. (OTCQX: BLGO), a company dedicated to developing sustainable technologies to address challenging environmental and cleantech issues, has announced that a third-party evaluation has validated significant advantages of its Cellinity battery technology for grid-scale energy storage applications.

This evaluation was conducted by U.S. BESS Corporation, a leading provider of advanced energy storage solutions for vital infrastructure across utilities, defense, microgrids, and heavy industries. The senior technical staff at U.S. BESS conducted a thorough examination of Cellinity’s design and assembly protocols, inspected the testing infrastructure, reviewed test data, and assessed the methodologies used for performance characterization. They concluded that the following performance characteristics, exclusive of any auxiliary systems, are supported by their observations and accurately represent the current behavior of the Cellinity cell:

– **Open circuit voltage**: > 4.2 V
– **Operating temperature range**: from 120°C to 250°C
– **Energy density**: > 500 Wh/kg (calculated based on active material)
– **Power density**: > 500 mW/cm³ (with a maximum observed value of 1579 W/kg at 230°C)
– **Charge capacity**: The cell can be charged to 100% of its theoretical capacity
– **Charge/discharge efficiency**: ~100%
– **Energy efficiency**: 95% at 230°C; 87% at 120°C
– **Self-discharge**: No measurable self-discharge observed over test durations
– **Thermal cycling durability**: Performance remains unaffected after repeated cycling

U.S. BESS Corp further noted that it is reasonable to assert that the cell would not experience any thermal runaway, the materials used in construction are widely available and can be sourced domestically, the cell does not contain rare earth elements, and all cell components are fully recyclable.

### A Market Ready for Disruption

The global demand for grid-scale energy storage is rapidly increasing, driven by the need to manage rising loads from artificial intelligence, decarbonization mandates, and the accelerated adoption of renewable energy sources. In 2024 alone, the U.S. Energy Information Administration reported a 66% increase in U.S. battery energy storage capacity. Although lithium-ion batteries currently dominate the market, they pose known challenges, including fire risks from thermal runaway, efficiency losses over time, and sourcing constraints related to rare and critical minerals.

BioLargo’s Cellinity battery technology addresses these limitations by utilizing innovative materials and architecture that provide exceptional thermal performance and operational efficiency without depending on rare earth elements.

### Validation Supports Commercial Pathway

The U.S. BESS report stated: “Based on our inspection and the evidence provided, U.S. BESS finds that the Cellinity Cell demonstrates a sufficient performance profile, with strong indications of high thermal stability, efficiency, energy and power density, and material sustainability, suggesting further investment in testing and commercialization. These attributes position this technology as a potential solution for critical gaps in grid-scale energy storage markets.”

Randall Moore, Chief Technology Officer at BioLargo Energy Technologies, Inc., remarked, “We are actively working on scaling up the cell design, refining manufacturing techniques, and integrating cells into a functional module for commercial-scale testing.”

CEO Dennis P. Calvert expressed, “We are not aware of any long-duration energy storage technology that can match Cellinity’s technical claims for cost-effective performance and safety. This third-party evaluation is a crucial component of our business plan to introduce Cellinity to the market through manufacturing joint ventures. We are currently developing several partnerships in this regard and look forward to sharing more information soon.”

### About U.S. BESS Corp

U.S. BESS Corp is a U.S.-based company providing energy storage solutions across various applications, including utilities, industrial needs, microgrids, and defense. With decades of combined experience in battery engineering, microgrid deployment, system-level integration, and manufacturing, the leadership team at U.S. BESS is uniquely qualified in the battery energy storage system industry. The company is committed to creating the most advanced and secure battery management system and building the largest domestic battery supply in the USA.

**Contact Information**
Mark Hagedorn
CEO, U.S. BESS Corp
503-720-9569

### About BioLargo, Inc.

BioLargo, Inc. (OTCQX: BLGO) is an innovator in cleantech and life sciences, providing engineering services and solutions. Our core products address PFAS contamination, enable advanced water and wastewater treatment, control odor and VOCs, improve air quality, enhance energy efficiency, facilitate safe on-site energy storage, and manage infections and infectious diseases. We aim to invent or acquire novel technologies, develop them into marketable products, and expand their reach through licensing and partnerships to maximize their impact. For more information, visit [www.BioLargo.com](http://www.biolargo.com).

**Contact Information**
Dennis P. Calvert
President and CEO, BioLargo, Inc.
888-400-2863

**Safe Harbor Act**

This press release contains forward-looking statements under the Private Securities Litigation Reform Act of 1995. These statements include expectations regarding anticipated revenue and plans for future operations. They involve risks and uncertainties, with actual results potentially differing significantly from those expressed or implied. Risks include regional economic conditions affecting consumer and business purchasing decisions, competition in rapidly evolving markets, and the company’s reliance on product distributors. More information on these risks is available in the company’s SEC filings, including the “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” sections of its most recent Form 10-K and Form 10-Q reports. The company assumes no obligation to update any forward-looking statements.
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