How to fast charge your iPhone X
https://www.theverge.com/2017/11/3/16599178/iphone-x-8-plus-apple-fast-charging-usb-c-lighting-power-brick-cable-how-to
Your brand new $1,000 iPhone X comes with a charger in the box, but it’s not very good. According to Apple, the iPhone X (and the iPhone 8 and 8 Plus) actually support fast charging to the level of restoring up to 50 percent charge in 30 minutes. Unfortunately, it’ll be a bit pricey if you want to get those speeds, since Apple doesn’t include any of the things you’ll need in the box.