What wattage for USB c charging? My 2020 air charger won’t charge the 2021 16 pro

Hello Wutosama,

It seems like you aren't able to charge your Mac and you've already looked at the article for charging MacBook Pros. You can take a look at this helpful guide:

If your USB-C power adapter isn't charging your Mac notebook

Regards.

The 16-in is looking for around 100 Watts to Charge+Run, 140W to fast-charge+Run.

The charger that came in the box with it will work for it and the MBA. Any reason you don't want to use that one?