Quick Answer: A certificate is only valid if all four fields match what you are buying: the model number on the certificate equals the SKU on the box, the applicant (certificate holder) is the actual manufacturer or its authorized representative, the factory listed is the one producing your units, and the product configuration (voltage, capacity, cell count) is inside the certificate's scope. Verify each field against the issuing body's public database — IECEE CB for IEC 62619/63056, UL Product iQ for UL listings, the lab's own report lookup for UN 38.3 — not against the PDF the supplier sent you. A certificate whose model, applicant, factory, or configuration does not match is a compliance risk at customs and a warranty risk at failure.
The four fields that decide validity
1. Model number. The certificate names specific models. If it says "HZEB-LCT-10" and you are importing "HZEB-LCT-16," the certificate does not cover your product — regardless of how similar the two look. Some certificates cover a series (e.g., "HZEB-LCT-5/10/16/20"); the scope text must list your exact model.
2. Applicant (certificate holder). The applicant is the legal entity that applied for and owns the certificate. For IEC 62619 CB certificates, this is usually the battery manufacturer. If the applicant is a trading company and the actual maker is a different factory, the certificate may still be valid — but only if the factory appears in the certificate's manufacturing-site list. An applicant you cannot identify in a company registry is a red flag.
3. Factory (manufacturing site). Certificates list approved production sites with addresses. A certificate covering Factory A does not cover units built at Factory B. This matters for buyers doing OEM/private-label: if the factory changes between batches, the certificate stops covering the new production unless it was added and audited.
4. Product configuration. The certificate's scope (or its annexes) states the tested configuration: nominal voltage, capacity, cell count (e.g., 16S), cell manufacturer, and sometimes the BMS version. If the product you receive has 20 cells instead of 16, or a different cell supplier, the certificate's tested configuration no longer matches the shipped product.
Where to verify each field
| Field | Verification channel |
|---|---|
| IEC 62619 / IEC 63056 (CB) | IECEE CB certificate database ( iecsearcher.iecee.org ) — search by certificate number or applicant |
| UL 1973 / UL 9540 | UL Product iQ ( iq.ul.com ) — search by company or file number |
| UN 38.3 | Test report number → email the issuing lab and confirm it exists, matches the model, and is not revoked |
| CE (notified body involvement) | NANDO database for the notified body number on the DoC |
The PDF the supplier sends is a copy, not proof. The database entry is proof.
A 10-minute verification workflow
Take any certificate and run this sequence:
- Read the certificate number. Note the issuing body (TÜV, SGS, Intertek, UL, DEKRA) and the number.
- Look it up in the issuer's database. If the number does not appear, the certificate is either revoked or fabricated. Stop here.
- Check the model list. Confirm your exact model string appears in the scope. "Series: HZEB-LCT" without model numbers is too vague — ask for the annex listing the models.
- Check the applicant. Search the company name. Does it match the manufacturer on your contract? If it is a different entity, ask for the relationship in writing.
- Check the factory. Is the manufacturing address on your order (or the one that will actually produce your batch) on the certificate? For OEM batches, confirm the factory was added to the certificate before production starts.
- Check the configuration. Compare the certificate's voltage/capacity/cell count against the datasheet of the unit you are buying. Mismatch = certificate does not cover this product.
The common failure modes
- Model mismatch. The supplier shows a certificate for the flagship model while shipping a cheaper variant. The variant has no coverage.
- Trading-company applicant. The certificate holder is a shell, the factory is unlisted. Customs may accept the mark, but a failure claim will not — the applicant cannot answer for the product.
- Expired or revoked. Certificates expire; some are revoked after audit failures. The database lookup catches both. Ask for the certificate date and check it is current.
- OEM scope drift. The certificate covers the original brand's configuration, but the private-label version changed the BMS firmware or cell supplier. The tested configuration no longer matches.
What to request before the PO
Put this in your RFQ/contract:
- PDF copies of all certificates (IEC 62619, IEC 63056, UN 38.3, and UL if applicable)
- The certificate numbers — not just the marks — for your own database lookup
- Written confirmation that the manufacturing site for your batch is listed on each certificate
- Written confirmation that the shipped configuration (voltage, capacity, cell count, BMS version) matches the certificate scope
- The certificate validity dates
A supplier that answers with numbers and lets you verify them is low-risk. One that sends a logo JPEG and says "trust us" is the case the workflow above exists for.
The measured-vs-published rule
The certificate proves the tested configuration at a point in time. It does not prove every unit in a container matches that configuration. Spot-check the nameplate of received units against the certificate scope — model string, voltage, capacity — before accepting the batch. One mismatched nameplate in a pallet is a whole-batch compliance question.
Ruibit sends the certificate numbers with every Dawnice home battery quote — IEC 62619 CB, IEC 63056 CB, and UN 38.3 — so importers can run this exact verification against the issuing databases before placing the order. If a field does not match, we flag it before shipping, not after.
FAQs
Q: Can I verify a CB certificate myself? Yes. The IECEE CB certificate database lets you search by certificate number or applicant. If the number does not resolve, the certificate is suspect.
Q: What if the certificate holder is not the factory? Valid certificates can be held by a brand or importer, but the manufacturing site must be listed. Confirm the factory on your order appears on the certificate; otherwise coverage stops.
Q: Do certificates cover all models in a series automatically? Only if the scope text lists them. A certificate naming one model does not cover a similar model. Check the model list, not the marketing name.
Q: How often do battery certificates expire? Typically 3–5 years, with annual surveillance audits. Ask for the issue and expiry dates and confirm the certificate is current at shipment time.
Q: Is a UN 38.3 test summary enough for transport? For most shipments, yes — the shipper must hold the test summary. But verify the summary's report number with the issuing lab before a large air shipment, since airlines and forwarders check it.
