Problems with overheating and interference would be the cause of multiple delays.
Although Apple introduced its wireless charger last year with the release of the iPhone X, it seems that the company can not solve some problems. Analysts say the AirPower will probably never see the light of day.
Although the iPhone X is no longer available, Apple has presented three new models at its annual conference. The wireless charging system AirPower was not even mentioned during the event. According to several reports, this would be this doomed to fail "Announced for a year, the AirPower is not yet on the market and Apple is no longer communicating about the subject, and worse, references to the product have been removed from the site.
The reports claim that Apple would have a hard time running its AirPower properly. According to John Gruber of Daring Fireball, the multi-coil design of the charger causes overheating problems that Apple can not solve. Other reports support this and add that the charger also has problems communicating with devices, so it does not know what the levels of refill patterns are. In addition, charging multiple devices with the AirPower will cause interference problems between them.
We do not know for now if and when Apple will sell its AirPower, but this will not happen in the near future.