The iphone12 has a wireless charging power of 15W, which uses MagSafe magnetic charging technology, and is compatible with existing devices that support the Qi standard. Qi-based wireless charging accessories don't seem to get this faster charging speed, with the Qi charger's maximum power stuck at 7.5W, the same specifications offered by the iPhone11 and older phones.
It's 7.5 watts.
The iPhone 12 supports two types of MagSafe wireless charger and Qi wireless charger, of which the MagSafe wireless charger can reach 15 watts, while the Qi wireless charger can only reach 7.5 watts.
The device's maximum wireless charging power is 15 watts, and you need to use Apple's official charger, or a certified charger