USB wall chargers and power banks are easy to quote and easy to get wrong. The listing says PD 65W, GaN, FCC, CE. The unit you receive is a 20W chip in a 65W shell, or a certificate for a different enclosure. This is not a PI-clause problem first. It is a nameplate vs. test report problem. If those two do not describe the same object, the rest of the paperwork is decoration.
This piece is what to lock on the product — not how to write a deposit line.
1. The wattage on the box is a claim until the report says the same model
Ask for the test report that belongs to this housing, this PCB, and this output matrix (5V/9V/15V/20V and the amp at each). A PD 65W claim that only shows a 5V/3A line in the report is a 15W product with a 65W sticker. If they send a report for “similar charger, black version,” treat it as a different SKU until the photos, internal layout, and model string match.
2. Certificates come in layers — transport, safety, radio, market
A charger is rarely “covered” by one PDF:
- safety (UL / ETL / IEC 62368-style reports for the market you sell)
- EMC / radio if it has a wireless coil or a radio module
- energy or marking rules in the destination (DOE / CEC style limits in the US, relevant EU markings)
- if you ship lithium packs with it, the battery transport file is a separate stack
CE on a vendor slide is often a self-declaration. That is a different animal from a UL listing you can look up by file number. Check the number in the official database the same way you would for any other certificate — company name, model, status, scope.
3. USB-IF logos are not free decoration
A printed “USB PD” or USB-IF logo that the brand has not licensed is a separate compliance and trademark problem. If you need the logo on the shell, ask whether they are in the program for that model. If you do not need the logo, tell them to leave it off. A factory adding logos “to look premium” is how your listing inherits a mark you cannot defend.
4. What to put in the purchase spec (short list)
- exact model string that must appear on the nameplate and in the report
- output table, not a single “65W” headline
- plug type (US / EU / UK) as a separate SKU, not a bag of mixed heads
- which marks may appear on the housing — and which must not
- a golden sample with the same internals you will inspect against
If the internals change after the sample — different capacitor brand, different protocol chip — you have a new product. Say that a BOM swap voids the sample sign-off.
The bottom line
A USB charger from China is specified by the output table and the report that matches that exact unit, not by the number printed on the cap. One certificate for a cousin model is not the set. Match nameplate, report, and sample before you talk about price.
If you need the charger spec and nameplate wording in English and Chinese for the PO, I can prepare the text and issue a stamped set under our bilingual translation company seal when you need one. See what this covers.
Safety and radio rules differ by market and are updated by the relevant bodies. Verify current requirements and look up certificate numbers before you order. General sourcing guidance, not product-safety or legal advice.