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UL 9540

Featured san jose fire department truck
Why fire departments and AHJs are pushing back on 9540A

The San Jose, Calif., fire department is leading the push for ignition-based “large-scale fire testing” of lithium-ion based ESS...

October 15, 2024
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The difference between UL 9540 and 9540A

By: Lucas Miller – Senior Engineering Consultant, Mayfield Renewables In 2018, the California Solar Energy Industries Association (CAL...

March 26, 2024
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Fire safety code conundrums continue for battery suppliers

Manufacturers of batteries for stationary energy storage are facing a moving target for fire safety code as written by the leading U.S. defi...

February 28, 2024
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