Leaving Home w/o car

When I leave my Home Area without connecting the phone to a charger (in the car) i would like that the iPhone automatically goes to powersaving mode.
I would like to have this done without of interaction.
I can do this with leaving a defined area but i can’t see an option which allows me to say “if not connected to an outlet”.
Can anyone help me with that?

Toolbox Pro has a way of doing this in its free version, using the Get Battery Status command:

1 Like