USB-C Power Adapter

Apple markets USB-C Power Adapters that are rated for different age levels depending on the power requirements of the notebook or mobile device.

Supported devices
Using any of the following chargers from Apple will enable fast charging on an iPhone 8 or later to reach 50% battery in around 30 minutes. Using a higher-rated charger than the power requirements of the device is fine, but vice-versa is not recommended.
 * 96W USB-C Power Adapter — 16-inch MacBook Pro 2019 or later
 * 87W USB-C Power Adapter — 15-inch MacBook Pro 2016 to 2019 (discontinued)
 * 61W USB-C Power Adapter — 13-inch MacBook Pro 2016 or later
 * 30W USB-C Power Adapter — 13-inch MacBook Air 2018 or later
 * 29W USB-C Power Adapter — 12-inch MacBook 2015 to 2019 (discontinued)
 * 20W USB-C Power Adapter — iPhone 12, iPad Pro (5th gen), iPad Air (4th gen)
 * 18W USB-C Power Adapter — iPhone 11, iPad Pro (3rd gen) (discontinued)

Articles

 * Yes, your old 18W adapter charges the iPhone 12 as fast as the new 20W charger be Daniel Petrov at PhoneArena (2021-07-06)