How to turn off the radio display

Hello members, i have ford fiesta st-line mk8. but can someone tell me how we can turn off the radio completely, light, sound, etc., (like when you close the car it turns off, the FORD symbol appears.)
to avoid running out of battery. Because if you press the on / off button, you just turn off the sound and not the radio entirely. Only turn off the radio completely if you lock the car or open a door.
I know that if you click on the right button  it will turn off the displayscreen but I intend to turn off even the radio display. Thank You.