Verifying a supplier’s UL 1973 compliance is essential to avoid misleading claims and ensure project safety. Here’s how to do it:
- Check the Certification Mark: Look for a UL Listed or UL Recognized Component mark on the battery nameplate, which should include a UL file number.
- Use UL Product iQ: This public database allows you to verify the file number, manufacturer, product category, and scope. Ensure the model numbers match exactly, including any suffixes for optional features.
- Review the Scope of Evaluation: Confirm that the tested configuration—cell supplier, BMS version, enclosure materials—matches what you intend to purchase. Component substitutions can invalidate the certification.
- Request Key Documents: Ask for the Conditions of Acceptability (CoA) for Recognized Components, UL 9540A test reports, UN 38.3 transportation test reports, and material flame ratings.
- Spot Red Flags: Be wary of claims like ‘UL 9540A certified’ (it’s not a certification), certificates lacking file numbers, or model numbers that don’t match the UL database.
By following these steps, buyers can ensure they are procuring genuinely compliant batteries.
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