Compliance & Power Supplies
Certification is a market-by-market decision, and it is cheaper to design for it than to retrofit it.
This guide covers the compliance half of the charger business: which marks each market demands, which regulations require registration rather than testing, and the adapter hardware questions that decide whether a product passes at all.
- Three routes below cover every compliance decision
- 25 guides organised by the question they answer
- Every route ends at a market, a mark and the document set
Three routes, and you only need one of them
Certifying per market, registering per regulation and understanding the hardware are three different jobs. Start with the one you are doing.
Certify for each market
Every market asks for its own mark, its own tests and its own paperwork. Knowing the set before the tooling is cut is the difference between a launch and a rework.
Register for the regulations
Some requirements are not tests at all — they are registrations and design duties that sit with the brand rather than the factory. Missing one blocks the whole market.
Know the hardware
You cannot certify a design you do not understand. Topology, component choice and plug system decide both the efficiency number and the safety case.
Safety in the field
Compliance is not only a paperwork exercise. The failures that reach a customer are the ones the paperwork was supposed to prevent.
Office and premises safety
Fire codes, insurance conditions and responsibility for a device left plugged in are all decided before an incident, not after. For anyone supplying a fleet or a building, those clauses belong in the specification conversation.
Lamp chargers carry a double burden
A lamp charger inherits both the lighting and the charging compliance sets, because it draws mains power and produces heat in a housing the user touches. It is the product where safety standards are most often underestimated.
The plug question, in plain terms
Half of the confusion around travel compliance is that a plug adapter and a voltage converter are different products with different limits. Getting that distinction right prevents both a failed product and a fried one.
Specifying and sourcing
The compliance set is decided by the specification, so the specification has to be written before the supplier conversation starts.
Write the spec sheet first
A custom adapter is defined by its input range, output profile, efficiency target and the marks it must carry. Those four lines decide the topology, the component cost and the test programme, and changing them later means changing all three.
Industrial and IIoT supplies
Industrial power supplies add requirements that consumer chargers never face: wider temperature ranges, longer service life, immunity rather than mere emissions compliance. The specification language is different and the supplier pool is smaller.
What actually decides whether a charger passes
Four things, in this order. The certificate is the last of them, not the first.
The plug system
Regional plug standards dictate the mechanical design and the test set simultaneously. Choosing a fixed-plug platform for a single market is cheaper; a swappable platform is what makes multi-market certification affordable.
The efficiency target
DOE Level VI and the EU equivalents set a no-load and average-efficiency floor. Designing to the floor leaves no margin when a component substitution shifts the number, so specify headroom.
The component set
X and Y capacitors, the transformer and the creepage distances carry the safety case. Changing any of them after certification invalidates it, which is why the BOM has to be frozen before testing.
Who holds the paperwork
Registration-based regimes such as WEEE, EPR and GPSR put duties on the brand rather than the factory. If nobody owns them, the market entry fails even with a perfectly certified product.
Where to go from here
The compliance cluster connects to four neighbours. Pick the one that matches your next question.
Compliance questions
The short answers. Each one links into the guide that covers it properly.
Which certifications does a charger need to sell in the EU?
CE marking covering the applicable safety and EMC directives, RoHS for materials, plus registration duties: WEEE for take-back and EPR for packaging. GPSR adds product-safety obligations. The CE file is the technical evidence; the registrations are separate legal duties.
Do I need separate certification for each market?
Effectively yes. PSE for Japan, KC for Korea, UKCA for Great Britain and DOE Level VI for the US are each distinct regimes with their own tests and marks. A CE certificate does not transfer, even where the underlying test data overlaps.
What is the difference between CE and UKCA now?
They are parallel regimes for the same underlying product requirements. Great Britain requires UKCA; the EU requires CE. The test evidence often overlaps, but the marks, the declarations and the responsible-party arrangements are separate.
Who is responsible for WEEE and EPR registration?
The brand or importer placing the product on the market, not the factory that built it. That is the part most often missed, because it is a registration duty rather than a test, and it blocks a market entry silently.
Can a charger be certified once and sold everywhere?
No, but a well-chosen platform gets close. Designing on a swappable plug system with a frozen BOM lets one electrical design carry several regional certificates, which is what keeps the cost per market manageable.
Request a compliance review
Send us the markets you are targeting and the product concept. We will come back with the marks and registrations each market requires, the test programme for the design, and the platform decision that keeps certification cost proportional to volume.