remove the ZR button and its springs. Be careful not to break the clips holding it in place.

unscrew the four PH000 screws holding the battery compartment and the ZR button board. There is one hidden on the side of the hd rumble module.

The screw of the ZR button board is shorter than the others. Keep that in mind if you are sorting the screws using a magnetic project mat or the cover of a Mako driver kit

Pick up the battery compartment.