For this procedure you will need:

An SN Programmable

A #1 Phillips screwdriver - the screws are actually #2, but some #2 screwdrivers may be too thick to reach into the screw holes.

A small flat-head screwdriver to lift the battery out of its holder.

A flat blade to pop/crumble the rubber feet off the bottom of the controller.

A new CR2032 coin cell battery.

Disregard the ominous black circle over the joystick handle in all the photos - it's difficult to take photos of extremely shiny things without showing off the entirety of your untidy workspace.