The Apple x supports 20w fast charge. According to the official data given by Apple, iPhonex supports PD fast charging protocol, up to 29W fast charging speed, but if you want iphonex to achieve fast charging, you need not only a charging head that supports USB and PD fast charging, but also a USB-C to Lightning data line.
Usb pd is a fast charging specification developed by the Usb if organization. It is one of the mainstream fast charging protocols. The usb pd fast charging protocol is output through a type C interface, but it cannot be said that the Type C interface must support the usb pd fast charging protocol.
Can be used
The Apple X supports 20w fast charge. Although Apple X supports fast charging, starting from Apple 8, the later mobile phone models have supported fast charging, but we need to pay attention to the time of use is that if we want the mobile phone to achieve fast charging, in addition to needing a PD fast charging head, we also need to be equipped with a USB-C to Lighting special fast charging cable, the two are used together. To enable the Apple X to achieve fast charging function.
Apple x with 20w fast charge has no effect on the phone.
Apple x is a mobile phone released by Apple in September 2017, which supports pd18w fast charge, and all mobile phones released after that support fast charge. The Apple 20w fast charge is to support Apple 18w fast charge, and the effect is better, but Apple x can not reach 20w fast charge, so Apple x with 20w fast charge has no impact.
The iPhone X can be quickly charged with 20 watts, but the charging power cannot reach 20 watts, because the iPhone X supports a maximum of 18 watts of charging power, it is recommended to use the original charger to charge.