Power Adapter Compliance

Power Adapter EU Compliance Guide

External power supplies can combine electrical-safety, EMC, substance, waste and energy-efficiency obligations. Scope depends on input/output ratings, intended equipment and the exact adapter design.

Potentially relevant compliance areas

Evidence worth preparing

Input and output electrical ratings
Safety and EMC test reports
Efficiency and no-load power data
Bill of materials and RoHS/REACH evidence
Technical documentation
Markings, instructions and declaration

Questions that change the compliance path

  1. What is the rated AC input voltage and DC output?
  2. Is the device an external power supply, battery charger or another type of converter?
  3. What is the maximum output power?
  4. Does the product use USB-C or another interoperable charging interface?
  5. Which equipment is the adapter intended to power?

Frequently asked questions

Do external power supplies have EU ecodesign requirements?

Many in-scope external power supplies are subject to EU ecodesign rules covering efficiency and related performance requirements.

Are the power-adapter ecodesign rules changing?

Yes. Regulation (EU) 2025/2052 creates a newer framework for external power supplies and certain charging devices, with general application from 14 December 2028.

Does a power adapter only need electrical-safety testing?

No. EMC, substance restrictions, technical documentation, markings and other product obligations can also be relevant.

Related product compliance guides

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