8BitDo Ultimate Wireless Battery Replacement

Insert an opening pick into the seam between the left controller grip and main controller body.

Pry the grip off.

Repeat for the right grip.

Remove the six 8 mm T6 Torx screws securing the rear case to the front case.

Insert an opening tool into seam at the bottom of the device and carefully pry the front and back shells apart.

Set the halves next to each other with care not to strain the connected ribbon cables.

The ribbon cable is secured with a locking tab connector.

Use tweezers to unlock the locking tab on the ribbon cable connector, then gently disconnect the ribbon cable.

Grip each analog stick cap firmly and pull straight up to remove them.

Remove the three 5 mm Phillips #00 screws securing the midframe to the back shell, then lift it straight out.

Remove the two 1 mm Phillips #00 screws securing the plastic battery cover to the circuit board, then lift the plate away to expose the battery.

Use a soldering iron to desolder the two battery connections.