PS4 Faulty PS4 controller

PS4 controller will not switch on, light up etc, even when charging.

Tested the cable, PS4 ports, with a 2nd controller and that's all fine, so I know the controller is at fault.

Took the controller apart and can see the battery, it is worth changing that or is the cost alone not worth it?

Anyone had a similar fault?

I've seen batteries going for from £4 on flee Bay and 10.99 on amazon may be worth it if you know how to change them I'm not familiar with PlayStation but that's price I've seen them going for

Thanks, I will give the battery a go. Seems the obvious fault.

Nice one works thanks mate