The PlayStation 4 controller is a rechargeable device that plugs into the wall and provides power to your console. When it’s fully charged, the light on the controller will be green. If it’s not fully charged, the light will be red and the controller will not work. To charge your PlayStation 4 controller, plug it into an outlet and wait for it to charge completely. Once it’s fully charged, you can use it again by plugging it into your console and pressing the power button to turn on your PlayStation 4.