Question UL-9540 ESS certificate for the FlexBOSS 18 or 21 with any EG4 Server Rack batteries in Cab.

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Last Post by kup 2 hours ago

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kup

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Topic starter August 20, 2025 2:29 pm

Will there be a UL-9540 ESS certificate for the FlexBOSS 18 or 21 with any of your EG4 Server Rack batteries in a cabinet similar to the 18KPv? If yes, when. This is needed for permitting in California.

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Question UL-9540 ESS certificate for the FlexBOSS 18 or 21 with any EG4 Server Rack batteries in Cab.

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