The iPhones 8 and X both support Apple’s “fast-charging” option, which has been available on the iPad Pro since the first 13-inch model. Fast charging lets you use a powerful USB-C charger, along with a USB-C-to-Lightning cable, to charge your iPhone quicker than you can with the standard iPhone or iPad chargers.
But is it worth the $75 that those accessories will cost? Is charging really so much faster? According to tests run by software engineer and startup investor Dan Loewenherz, the answer is no.