Temu EU now rejecting battery certifications from non-approved labs – what’s the deal?

Cost estimate
I had to re‑test a product recently. Battery certification (UN38.3 + IEC 62133) from an approved lab cost me about €400–500. The full CE (EMC + LVD + RoHS) was another €600–700. It’s not cheap.
If you have multiple products that use the same battery, try to get the battery cert first and then see if the lab can issue product‑specific reports based on that. Some labs will do a “family model” approach to save costs.

If you’re doing this for the EU market, also remember that you need the full CE certification (EMC, LVD, RoHS, RED if applicable) on top of the battery certificate. The battery cert alone isn’t enough. They’ll ask for both.
And if your product has wireless charging or Bluetooth, you’ll need RED certification. That’s a separate set of tests.

One certificate for multiple products – be careful
I used one battery certificate for three products that all used the same battery. It worked, but I had to upload the same certificate separately for each listing. They didn’t automatically link them.
Also, make sure the battery label in each product’s photos matches the certificate exactly. If one product has a slightly different label (even just a different date code), they might flag it.

Built‑in batteries – additional tip
For built‑in batteries, they’re usually pretty strict about the photos. You need to show:

• The battery label clearly (manufacturer, model, capacity in mAh or Wh)
• The battery connected to the device (so they know it’s not just a loose battery photo)
• The overall product assembled, with the battery installed

Some sellers try to just upload a stock photo of the battery. That won’t work. They want photos of the actual battery in your actual product.

The approved lab list is in the seller center under Compliance Center → Accredited Labs. It’s not a huge list – maybe 15‑20 labs globally. If your lab isn’t on there, you’ll have to re‑test.
One thing to watch: even if the lab was on the list before, they sometimes remove labs. So a certificate that worked six months ago might get rejected now. Always check before you assume.