Can my MacBook Air (M1) power Magsafe charger?

[ericg301]

Just got my first magsafe charger. Can I plug it into my m1 Macbook air to charge my phone?
It seems to be working...

 

[jterp7]

short answer is yes (as we know the left port is the default power port). Is it outputting the max that the magsafe can take advantage of? (20W) no way to be sure unless you get that measurement tool i think.