Use a spudger to pry the six notches holding the foam cup from the headphone.

There are three notches at the top and three at the bottom.

After removing the ear foam cup, you will see a piece of circular foam. Gently lift the top to locate 2 screws and lift the bottom to locate another 2 screws.

Remove all four screws.

Use a spudger to go around the outer cover to remove it. *Note there are cables still connected to the cover thus do not take apart with force.

Locate 3 screws around the lower ring. Remove all 3 of them and gently remove the ring.

You will be able to pop out the three buttons! To put back the items, reverse the steps. :)

To access the battery compartment, repeat Step 1 - 3 to open up the other side of the headphone.

The battery on mine is a model: Sony SP73, 3.7V, 1200mah Li-ion battery. The battery is held on by adhesive.

Gently lift the white flap on one side of the ribbon cable connecting the ear cup to the main board and gently slide the cable out. Rock it back and forth a little if needed.

Remove the tape if needed, and then carefully remove the 4 Screws Holding Down The Beige Battery Mount, and the silver screw holding down the main board.

Gently shift the battery mount and main board without completely removing them to access the three screws holding in place the charging port cover.

Slide the charging port cover out to reveal the charging port board.

Remove the single screw holding the charging port in place and slide the ribbon cable out from the main board to detach it.