

https://github.com/aarron-lee/SimpleDeckyTDP?tab=readme-ov-file
I believe this plugin allows you to set different power profiles for plugged in vs portable play. It’s not on the decky store for whatever reason (which is disappointingly common with new plugins), so you’ll have to install it manually.
Installing it isn’t hard, you download the latest release.zip file from the GitHub, enable developer mode in decky, go to the dev menu in decky, hit install from zip, and then pick the zip file you just downloaded.
I installed it to check the feature set but haven’t really used it besides that.