Apple's included charging bricks often deliver slower speeds than devices can handle. The M4 13-inch iPad Pro, for example, ships with a 20-watt charger but supports up to 35 watts. Switching to a more powerful charger can literally double charging speeds for many Apple products.

Rands in Repose compiled comprehensive tables showing optimal chargers for each Apple device. The data reveals that peak charging only occurs for the first 15 minutes before Apple's battery management reduces power draw to protect battery health. Modern devices adjust power consumption based on temperature to prevent stress.

For Apple Watch Series 11 and Ultra 2, the cable matters more than the adapter. These models fast-charge to 80% in 30-45 minutes only with the Apple USB-C Magnetic Fast Charging Cable and any USB-PD adapter (5W+). Using the wrong cable roughly doubles charging time. AirPods cases draw so little power that the charging brick choice is irrelevant.