The charging that is included on the iPhone 8 is 5W, like the typical iPhone. However, if you have access to a high-powered charger, such as on an iPad Pro or even a USB-C MacBook, charging will be faster. With a 29W USB-C charger for 30 minutes for MacBook Pro on iPhone 8 will add about 50 percent power. So the phone will be full in just one hour.