Fast Charging
By MacRumors Staff
Fast Charging Articles

Fast Chargers May Require USB-C Authentication to Work at Full Speed With 2018 iPhones
Rumors suggest Apple will bundle a faster 18W power adapter with its next-generation iPhones, expected to be unveiled this September, but third-party fast charger compatibility may be limited.
Japanese blog Mac Otakara, citing information from suppliers, claims that third-party fast chargers may require USB-C Authentication [PDF] certification, or C-AUTH, to charge the 2018 lineup of iPhones ...
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PSA: iPhone 8 Fast Charging Works With Third-Party USB-C Power Adapters That Support Power Delivery
A recent support document on Apple's website confirms that you don't need one of Apple's USB-C power adapters to fast charge the latest iPhones.
Apple says the iPhone 8 and iPhone 8 Plus, and presumably the iPhone X, can be fast charged with any comparable third-party USB-C power adapter that supports the USB Power Delivery specification.
An official Lightning to USB-C cable is still...