The newest MacBook will support much faster charging with a 67W power adapter, but you’ll have to buy that adapter separately. Technically, Apple is shortchanging M2 MacBook Air buyers on the fastest possible charging speeds. The iPhone 13 Pro Max can charge at speeds of up to 27W, but it’s the outlier.

An iPhone or iPad won’t suffer as much as a Mac since most iPhone models cap out at around 20–22W. No matter how you slice it, charging a Mac, iPhone, or iPad together will not provide the fastest possible charging for those devices. If you connect a Mac notebook or iPhone and an Apple Watch or AirPods, the Mac notebook or iPhone receives up to 27.5W and the Apple Watch or AirPods receive up to 7.5W.If you connect an iPhone and an iPad, each device receives up to 17.5W.If you connect a Mac notebook and an iPhone or iPad, each device receives up to 17.5W.The only exception is connecting devices with significantly lower power demands, such as a set of AirPods or an Apple Watch. In other words, each device will get 17.5W of charging power. If you plug in two devices, it will split the power output evenly in most cases. There’s not much intelligent power management here. However, Apple’s adapter does this in a particular way. In other words, if you’re charging more than one device, that power has to be shared between them. Like most multi-port chargers, the 35-watt rating on Apple’s adapter reflects the total power output across both ports. How Apple’s 35W Dual USB-C Charges Multiple Devices

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