How can buyers verify a supplier’s claim of UL 1973 compliance for LiFePO4 batteries?

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...

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What are common pitfalls when sourcing 18650 cells, and how can they be avoided?

Common pitfalls when sourcing 18650 cells include:Rewrapped or "Mystery Brand" Cells: Counterfeiters often rewrap low-grade cells as premium models. Fix: Insist on traceability and test samples for weight, IR, and capacity consistency.Grade B Bargains: Off-spec cells may pass basic tests but fail prematurely. Fix: Specify Grade A cells with written grading criteria; derate performance expectations...

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