How to Verify Chinese Battery Certifications (UN38.3, CE, IEC 62619)

A certificate PDF means nothing until you confirm it exists. In three years of importing, I've caught two forged UN38.3 reports and one CE mark printed on a unit that was never tested. Here is the method I run on every new supplier before I wire a deposit.

Step 1: Demand the native PDF

Suppliers send screenshots. You want the original file. A screenshot crops the footer where the lab prints the report number, the issue date, and the signatory. Open the PDF and read those three fields first. If the supplier "can't find" the PDF and only has a photo, stop the conversation there.

Step 2: Trace the report number on the lab's portal

Every legitimate test report carries a tracking number tied to the lab's database. The big five labs all run public verification:

• SGS — certificate verification portal, search by number
• TÜV Rheinland / TÜV SÜD — certificate database, free lookup
• Intertek — ETL and CB certificate search
• UL — certification database, lists file numbers
• DEKRA — certificate check by ID

Paste the number. The portal returns the manufacturer name, the product model, and the test standard. If the number returns nothing, the certificate is fake. I ran this on a "TÜV" UN38.3 last year. The portal showed no record. The supplier stopped replying the same day.

Step 3: Call the lab when the portal stays quiet

Some labs keep certificates off the public portal but confirm by phone. I call the lab's certificate desk and read the number. A real report resolves in under 10 minutes. The clerk reads back the model and the client name. A lab that has no trace of the number tells you everything.

Step 4: Match the model string character by character

The certificate lists a model number. Your purchase order lists a model number. They must match, including casing and hyphens. Customs officers in Nigeria and Kenya reject shipments when the certificate model differs from the unit label by a single character. I lost a week of port storage on a typo once. Read both strings side by side before you book freight.

CE: the mark is not the certificate

A CE symbol on the case proves nothing. The real document is the Declaration of Conformity (DoC). The DoC must name the directives (EMC 2014/30/EU, LVD 2014/35/EU, RoHS 2011/65/EU), carry a signature, and show a date. Some suppliers buy a blank DoC template and fill in their name. The lab portal check in Step 2 exposes that. No lab record means no valid CE.

IEC 62619: who actually asks for it

EU installers and several Middle Eastern and African tender specs require IEC 62619 for stationary packs. The verification runs through the same portal check. The standard covers overcharge, short-circuit, and thermal-abuse protection plus BMS functional safety. A supplier claiming "IEC ready" without a report number is guessing. Ask for the number, then trace it.

Red flags I've learned to trust

• A certificate issued by a lab you can't find on a search engine.
• UN38.3 dated more than 12 months ago for air freight (some carriers want annual re-verification).
• A CE mark with no matching DoC signed by a named person.
• The report number fails the lab portal and the supplier blames "system delay."
• Model strings that don't match your order by even one character.

What this costs you in time

The full check takes 30 minutes per supplier. The portal lookups run 5 minutes. A phone call to the lab adds 10. Reading the documents line by line takes the rest. Compare that to a seized container or a 12% duty penalty on a misdeclared certification. The 30 minutes pays for itself on the first order.

Related: Battery Certifications Guide explains what each mark means. Last updated: August 2026.