Apple equipped the iPhone 15 smartphones released in the fall with a USB-C port that can be used to charge and connect external devices. However, as the resource reports MacRumorsSome external batteries (power banks) with a USB-C port do not support the iPhone 15, which leads to problems charging smartphones.
According to iPhone 15 users on the Reddit platform and MacRumors forums, not all existing power banks with USB-C can be used with iPhone 15 family smartphones. It is reported that in some cases the iPhone 15 simply won’t charge. and sometimes, on the contrary, the power bank starts charging itself. The incompatibility may be due to the implementation of the iPhone’s reverse charge feature.
The problem affects a number of external batteries. These include, for example, Anker PowerCore Slim 10K PD. When asked by users, Anker replied that this was the only way “force” A power bank to charge an iPhone should be used via the USB-A port.
“It appears that the reverse charge feature on the iPhone 15 series has caused an issue with the Anker PowerCore Slim 10k PD charging smartphones via USB-C, for which there is currently no solution. The only way to charge an iPhone is to use the USB-A port. Anker replied, promising to conduct additional tests to find out the extent of the problem and attempt to resolve it.
iPhone 15 smartphones support reverse charging of Apple Watches, AirPods and other iPhone models via the USB-C port. There is a possibility that this feature may affect compatibility with some power banks. However, as MacRumors noted, most USB-C power banks with Power Delivery still support normal operation with the iPhone 15.