Battery holder for piit79's Rev57LP keyboard with nice!nano v2.0 board.

I used

• YJ551430 180mAh battery
• 2x1 pin header socket soldered to directly to the battery wires
• 2 pins from a pin header (i.e. without the black plastic part) soldered in a suitable height

FreeCAD file is attached and it should be very easy to modify any dimensions necessary to fit a slightly different battery or a connector.