Two Different Jobs: Market Access and Transport
Battery marks answer two unrelated questions. Transport marks such as UN 38.3 answer whether the battery may move as cargo at all. Market marks such as CE, UL and the IEC family answer whether the product may be sold and installed in a given market. A battery certification guide has to keep the two apart, because the most common buyer error is taking one for the other: a shipment that clears transport rules can still lack the mark a market requires, and a product certified for one market carries nothing that proves it for another.
CE Marking
CE marking is the manufacturer's declaration that a product meets the applicable European Union legislation for sale in the European Economic Area. For battery products, the relevant directives typically include the Low Voltage Directive and the Electromagnetic Compatibility Directive, with the RoHS Directive covering hazardous substances, and the EU battery regulation adding phased obligations that arrive on a schedule. CE is largely self-declared against standards, which means the value of the mark rests on the technical file behind it. A buyer should ask which directives the declaration covers for the model, and which test reports support it.
UN 38.3
UN 38.3 is the transport test series from the United Nations Manual of Tests and Criteria: altitude, thermal cycling, vibration, shock, external short, impact or crush, overcharge and forced discharge. It is a precondition for shipping lithium batteries by air or sea, and the evidence is a test summary that follows the model through its life. Because transport rules also carry packing, marking and state-of-charge requirements, the certificate alone does not move a shipment; the shipping checklist on this site covers the rest of the file.
The UL Family
In North American practice, UL standards are the common reference points for battery safety. UL 1642 covers lithium cells, UL 1973 covers batteries for stationary and motive auxiliary applications, and UL 9540 covers energy storage systems, with UL 9540A as the test method that examines thermal runaway fire propagation between cells and units. These are demanding system-level evaluations, and the scope of any listing is specific: a listed pack does not automatically make a listed system, and a listed cell does not automatically make a listed pack. Buyers serving North American projects should confirm with their own advisers which level of evaluation their channel requires, and which of them the supplier's models can evidence.
The IEC Family
IEC standards are international references that many national schemes adopt. IEC 62133-2 covers sealed secondary cells and batteries, including lithium systems, for portable applications. IEC 62619 covers secondary lithium cells and batteries for industrial applications, which is the reference most often cited for storage and equipment batteries. Other IEC documents address specific system contexts. Certification against an IEC standard is performed by accredited bodies in national schemes, so the question to a supplier is not whether the standard number is familiar but whether a certificate for the model exists, from which body, and with what scope.
How to Verify a Certificate
- Request the certificate copy, not the logo
- Check that the model number and rated values on the certificate match the quotation and the datasheet revision
- Note the issuing body, the report number and the validity period
- Confirm the scope covers the exact configuration being purchased, including capacity variants
- Where the market depends on it, confirm the testing laboratory's accreditation status
Matching Marks to Markets
A practical rule for product planning: transport evidence is universal, CE evidence opens the European Economic Area, UL evidence matters for North American channels, and IEC-based national certification covers many other markets. Each additional mark costs time and money, so product lines are usually planned so that one platform model carries the heavy certifications and sibling capacities are added deliberately. This is why the certificate plan belongs in the OEM onboarding conversation rather than after the sample stage.
Where YueQi Fits
YueQi New Energy, based in Zhongshan, Guangdong, shows CE and UN 38.3 marks on its LiFePO4 storage product literature and provides certificate copies on request for the documents that apply to each model. Which additional standards a specific model has been evaluated against is a per-model question, and the answer is to be confirmed in writing with the certificate plan for the project, so that no mark is assumed without a document behind it.
Next step
Send your application, target specification and estimated quantity with your inquiry, and we will confirm matching products, samples and document requirements in writing. See the product lines or request a quote.