The enclosure model has 4 holes on the side for exposing the nickel plates of the battery, holders inside for the same, and a square hole for USB cable.
The cover fits as a snap to the enclosure, and has a cavity on the top.
Dimensions -
Cavity: 3.16 mm x 3.52 mm x 2.10 mm
Box (including cover): 47 mm x 36 mm x 15.7 mm
Wire hole: 5 mm x 4 mm
Printed Material: PLA
Formats provided: STL and AMF
Nozzle diameter: 0.4 mm
Infill density: 15%
Supports: None
Print Colour: Orange
Software Used: FreeCAD
The author hasn't provided the model origin yet.