How To Fix Not Charging Ps4 Controller. I write them below with all the steps. Repair and purchase a new controller.

Reset the PlayStation 4 controller. If you are comfortable doing this repair then well and good but if you are not comfortable repairing leave your previous controller and move on to a new ps4 controller that you have to get by purchasing a new one. Well in this situation replacing the PS4 controller seems the only way.
Reason to PS4 Controller Not Charging.
Well in this situation replacing the PS4 controller seems the only way. The first place you should look when your PS4 controller wont charge is the cable. Sometimes the charging port may have a bit of dust on it which is causing a roadblock in the charging process. Make sure the USB cable is not damaged.

