What is the maximum wattage recommended for wireless charging iPhone 12

Hi auld geek,

Welcome to the Apple Support Communities. We understand that you'd like to know the maximum wattage recommended for wirelessly charging your iPhone. It appears that you've had a chance to review How to wirelessly charge your iPhone, which mentions rates up to 7.5 watts. You can also see wireless chargers that are compatible with the iPhone 12 here: Wireless Chargers, or contact the Apple Online Store. You may need to select your country from the dropdown menu at the top of that page and click continue to get info for your location.

All the best!