Three items decide whether a wireless charging SKU can be described accurately on a box: the profile it implements, the certification scope that covers it, and the alignment method it relies on. A product can be fully functional and still be undocumentable, because one of the three was never stated.
Wireless charging standards: what the specification covers
Three layers: the power profile, the alignment method and the compliance requirements attached to the mark.
The specification defines the interoperability behaviour between a transmitter and a receiver, including the power profiles and, in the magnetic profiles, the alignment reference. It also defines the compliance requirements for products that carry the mark, which is what makes the certification a scope rather than a badge.
Regional safety and electromagnetic approvals sit alongside the wireless specification rather than inside it, which is why a wireless charging SKU usually carries two document sets describing the same revision.
Item 1: the profile the product implements
The profile decides what the product can claim and what it has to be tested against.
A transmitter implements one or more profiles, and the profile determines the power range, the alignment behaviour and the communication it has to support. Stating the profile in the specification is what allows an engineering response rather than a marketing one, and it is also the item that a certification report will name. Where the retail claim refers to a power level, the level should be the one the implemented profile delivers.
Item 2: the alignment method
Mechanical alignment, magnetic alignment, or a coil array arranged to widen the usable area.
Each method changes the coupling and therefore the delivered power, and each has a different tolerance to the phone being placed slightly off centre. The magnetic profiles fix the position and depend on the receiving device or its case providing a matching ring; a coil array widens the area without fixing the position; a simple locating feature relies on the user. The packaging should describe the method honestly, because it is what the customer experiences.
Item 3: the certification scope
The scope names a configuration, a profile and a holder.
Read the scope rather than the mark: which product revision is covered, which profile was tested, and which company is named as the holder. A configuration change such as a different coil arrangement, a different magnet array or a new enclosure is assessed against the tested configuration rather than assumed to be covered. The scope is also what a marketplace or a distributor will ask for.
Item 4: the device and case claims
The claim depends on the receiving device as much as on the product.
The delivered power depends on the device’s coil position, its power behaviour and the case thickness, so a claim should name the conditions: the device family, the case limit and the alignment method. A claim of “fast wireless charging” without those three conditions becomes a support query from the first customer whose case is thicker than expected.
| Item | What to state | Evidence | Common omission |
|---|---|---|---|
| Profile | Which profile the product implements | The certification report | A power figure without a profile |
| Alignment method | Mechanical, magnetic or array | The mechanical revision | Described as universal |
| Certification scope | Revision, profile and holder | The report with its scope | A certificate without a scope |
| Device and case claim | Device family, case limit, method | The measured delivered power | A claim without conditions |
How the layers interact
Three interactions that decide whether the claim survives a review.
The safety approval covers the construction of the product, and the wireless certification covers the interoperability behaviour, so a change to the coil or the shielding can affect both. The alignment method affects the thermal behaviour, because a fixed position concentrates the losses in one place. And the device list affects the claim, because delivered power is measured with a receiver rather than in isolation.
What to ask a supplier for
Four documents, and each answers a different question.
The certification report with its scope; the mechanical revision showing the coil and array arrangement; the measured delivered power against a named reference device with the case condition; and the safety and electromagnetic evidence for the same revision. With those four, the packaging text can be written from evidence rather than from a datasheet summary.
Where retail SKUs go wrong
Three patterns, and each is visible before the tooling is released.
A power claim that exceeds what the implemented profile delivers; an alignment claim that assumes every device carries a magnet ring; and a certification file that names an earlier revision than the one shipping. Each is a documentation gap rather than a design fault, and each is cheapest to close at the specification stage.
FAQ
Does the product need its own certification or can the factory’s be used?
The report describes a configuration and names a holder. Where the brand’s build matches the tested configuration, the file supports the product; where the enclosure, the coil or the array differs, the difference is assessed and the scope is extended. The report describes a configuration and names a holder, and where the brand’s build matches it the file supports the product.
How should the power claim be stated?
As the delivered figure with a named receiving device, the case condition and the alignment method. That sentence is what makes the claim checkable and keeps it inside what the certification covers. State the delivered figure with a named receiving device, the case condition and the alignment method, because that sentence makes the claim checkable and keeps it inside what the certification covers.
Are the safety approvals part of the wireless certification?
They are separate. The wireless certification covers interoperability against the specification, and the safety and electromagnetic requirements come from the destination market. Both describe the same product revision. The wireless certification covers interoperability against the specification, while the safety and electromagnetic requirements come from the destination market, and both describe the same revision of the product. The two are kept together as one revision of the product.
What happens if the magnet array changes after testing?
The tested configuration has changed, so the file is extended or the product re-tested, depending on the difference. The scope is read against the shipped revision, which is why the revision marker belongs on the artwork. The tested configuration has changed, so the file is extended or the product re-tested, and the scope is read against the shipped revision rather than the tested one.
Next step
Send the device list, the alignment method and the target markets to Wecent Group through the contact page. The reply states the profile, the certification scope, the measured delivered power with its conditions and the wording the packaging can carry. Related reading: wireless charger applications, OEM and ODM charger manufacturing and charger quality control. External references: Wireless Power Consortium, WPC Qi standard, WPC knowledge base, IEC standards, UL standards and certification and TUV testing services.
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