battery life – Show alert on mac when laptop is using excessive power

I want an alert that shows up when my mac laptop is sucking up the battery. i.e. Perhaps an alert the fan turns on for a bit, or an alert if there is a “high energy usage” app (you can see what apps are using lots of energy if you look in the battery menu, but there’s no way to automatically know when to check this menu.) I want a popup so I can take action to preserve my battery.

i.e.

  • I forget my docker container is running, and I am at a coffee shop and I don’t need it running
  • I leave youtube open, or safari open (after having youtube open, and closing , for some reason safari still sucks battery)