DualShock 4 Battery Replacement

Using the Phillips #00 Screwdriver, remove the four 6.0 mm screws securing the rear cover to the controller.

Start with the right handle:

Squeeze both sides of the right handle to create a small opening

Wedge an opening tool into the opening and slide it up towards the joystick

Pull down on the plier until you hear a click as it separtes from the controllers body.

Repeat these steps for the left handle.

Wedge a plastic opening tool into the case-splittings and pull down to crack open the casing near the Share and Option button.

Split the plastic covers of the controller apart, but they will still be attached by circuit board ribbons.

Detach the motherboard ribbon by pulling it straight out with your fingers.

Once the halves are separated, place the top of the controller off to the side.

Using forceps, remove the battery plug by gently rocking the forceps side-by-side to loosen the plug.

Once the battery is unplugged, it can be lifted off of the controller.