15W Qi2 build

15W Qi2 wireless charger for magnetic phone charging

The volume build. 15W over the magnet ring, a USB-C input and a housing that can be a stand, a plate or a car mount with the same electrical design.

Build summaryWIRELESS CHARGER SUPPLY
15 WOutput
Qi2Profile
MagnetAlignment
USB-CInput

Specification

What the sheet states for this build, and what is confirmed per order.

15W Qi2 build
SpecificationValue
ProfileQi2 magnetic power profile
Output15 W
AlignmentMagnet ring
InputUSB-C
Power supplyQuoted with the build
HousingStand, plate or mount, per programme
IndicatorLED, per programme
CertificationQi2, per model
MOQ1,000 pieces per model

The specification sheet that ships with a quotation carries the coil distance, the input range and the temperature at which the build derates. Those three numbers decide the retail claims.

What 15W actually delivers

Qi2 caps the magnetic profile at 15W, and a phone takes that 15W only while its battery and its thermal headroom allow it. In practice a phone at 40 percent draws the full rate for a while, then steps down. The useful claim is not 15W all the way to full, it is 15W at the start.

That is also why charging time claims should name the phone and the starting percentage. A charger that reaches 50 percent in 30 minutes on one model can take 40 minutes on another with the same coil.

Cases, rings and alignment

The ring holds the phone coil over the charger coil, which is where the efficiency comes from. A thin case passes the field. A wallet case, a metal plate or a thick rugged case does not, and the charger either derates or refuses to start.

  • The case thickness the ring is rated to hold through.
  • Whether a magnetic plate is part of the case, and whether the charger tolerates it.
  • The phone size the housing supports without the top edge lifting.

When 25W is worth it

Only when the phone list supports Qi2.2 and the retail price can carry the extra power stage and the thermal design. For a mixed fleet, or for a product where the charger is an accessory rather than the hero, 15W is the lower risk build and the easier certification.

Before the order

  • Housing: stand, plate and mount are different tooling, same board.
  • Adapter: quoted in or out of the box, and the label follows the choice.
  • Case guidance: a printed line in the manual prevents a category of returns.
Build
15W Qi2
Line
Qi2 magnetic chargers
Ask for
Specification sheet, certificate file, packing artwork

Send the phone list, get the sheet.

Build, specification sheet and the certificate list for each line item, in one reply.