UL 9540A Testing and Certification Services for Battery Energy Storage Systems (BESS)

Empowering Safe and Efficient Energy Storage Solutions

At Intertek, we understand the critical importance of innovation and safety in the rapidly evolving Battery and Battery Energy Storage System (BESS) industry. Our testing services, anchored by the UL 9540A test method, are designed to help manufacturers navigate the complexities of safety standards, ensuring their products are not only competitive but also accepted by code authorities and fire services.

Understanding UL 9540A

UL 9540A: The Test Method for Evaluating Thermal Runaway Fire Propagation in Battery Energy Storage Systems

UL 9540A is an essential Test method for cell level test, Module level test and Unit level test for manufacturers in the BESS Industry. In most jurisdictions 9540A compliance is mandatory. It complements the requirements of UL 9540, focusing on evaluating the risk of thermal runaway – a critical safety concern for battery storage systems.

Product Listing & Certification to ANSI/CAN/UL 9540 and 9540A

Our fact sheet on Energy Storage Systems offers an overview of the regulation, products in scope, testing requirements, and suggests next steps for manufacturers.

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Key Requirements:

Thermal Runaway Triggering: Examination of a BESS’s ability to mitigate the effects of thermal runaway initiated within a cell.
Fire Propagation: Analysis of the system’s design to prevent the spread of fire between cells and modules.
Containment and Venting: Evaluation of the system’s ability to contain or vent gases and heat safely.
Failure Mode and Effects Analysis (FMEA): Assessment of potential failure points and their impact on the safety and operation of the BESS.

The Urgency for Early Testing

In the fast-paced BESS market, time-to-market is crucial. Starting UL 9540A testing early in the product development process is not just a regulatory necessity; it is a strategic advantage. Pre-compliance testing allows for:

Identification of Design Flaws: Early detection of design flaws, enabling design modifications before mass production.
Regulatory Compliance: Assurance that products meet all necessary safety standards, avoiding costly delays and redesigns.
Market Readiness: Accelerated path to market readiness, with products that are proven safe and reliable.

Why Choose Intertek for UL 9540A Testing?

Intertek proudly expanded its testing capabilities with a new state-of-the-art laboratory in Cortland, NY, specifically designed for BESS Thermal Runaway testing. This facility offers a comprehensive range of tests, from cell level to unit level, from thermal runaway assessment to full-scale fire propagation analysis. Our team of specialists, with their extensive experience in battery safety and regulatory compliance, provides invaluable insights and guidance throughout the testing process, ensuring that products meet code and UL 9540A requirements.