Macbook Air charger not turning green

I saw this same issue the other day with my MacBook air M2 as well.

I checked the charging and it was at 90%.

The MacBook was no longer charging its battery in order to preserve battery life.

When the battery is charged at 100% then the MagSafe light goes green.

If I recall correctly, there is a charge setting that can be changed so it fully charges to 100% all the time. But this would not be as good for your battery.

tvguy wrote:

I have an M2 Macbook Air and the charger light is no longer turning green. It seems to be charging completely fine, but the light stays orange. What does that mean?

Nothing to be worried about. This means that the battery health management on your MBA is working properly.

Here is Apple official page that states a "hold charge" status will also keep the indicator light amber.

Charge your MacBook Air or MacBook Pro - Apple Support