Mains-powered chargers sit under different rules than battery products - safety standards, efficiency rules and retailer requirements all apply.
Unlike power banks, a charger or adapter connects directly to the mains, which brings it under safety regulations that battery-powered products avoid. It also brings efficiency rules: external power supplies are regulated specifically for how much energy they waste.
Two failures we see repeatedly: adapters sold in the EU with an FCC report but no LVD file, and US-bound adapters with CE documents but no NRTL listing when the retailer requires one. The market decides which documents matter - not the test lab.
| Market | Typical requirements | Notes |
|---|---|---|
| United States | FCC Part 15 Subpart B; DOE Level VI efficiency for external power supplies; UL/ETL listing to UL 62368-1 commonly required by retailers; Prop 65 | FCC is federal law; UL/ETL is usually a retailer or marketplace condition, not a federal mandate |
| European Union | CE: LVD with EN 62368-1, EMC (e.g. EN 55032 and immunity standards), RoHS; ErP Regulation (EU) 2019/1782 for external power supplies | ErP covers no-load power consumption and average efficiency - often missed on first-time submissions |
| United Kingdom | UKCA: safety, EMC and RoHS equivalents | Plugs must be BS 1363 type for UK mains |
| India | BIS mandatory registration scheme covers mobile phone chargers and many adapters | Registration under the CRS is required before import |
If you have quotes that differ between laboratories for the same charger, send us the model and destination markets - we can tell you which standards should be in the scope and which are padding.
There is no federal requirement for an NRTL mark on a charger itself, but most large retailers and some marketplaces require UL or ETL listing before they will carry the product. Practically, plan for it.
It is the EU ecodesign regulation for external power supplies, setting average active efficiency and no-load power limits. If your adapter plugs into the EU mains and converts to low-voltage output, it applies.
Only where models share the same circuit design, transformer and enclosure family. Changing the output rating, plug type or enclosure usually requires at least a delta test - decide the family structure before testing starts, not after.