Simple but irritating charger, fortunately, there is a solution ...

So I set out to open it, and remedy. The solution is simple and you only need a screwdriver to remove that damn noise once and for all!

Just de-clipped along the edge both sides of the hull. Then you will find a small hood covering one of the circuits, the center of the card contained in the magazine. This cover with an arrow indicates the place where you have to insert the screwdriver to open. Once opened, you will see a small metal disc; it is he who, vibrant, generates this unbearable noise!

Take it, and then you can close the cover and the charger. You will benefit from a wireless charging, and in silence!

PS: Amazon seems to have censored my comment with the link. I therefore drew up to add some steps on this operation.