Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2377925.

I often carry a spare battery in my pocket. Contacts covered with a small piece of tape. This is a more elegant solution. The print has a tight fit and will not fall off.

Designed to be printed with a 0,6mm nozzle = 2x0,72 mm for the walls. If you want to print this with a 0,4mm nozzle, manually set the track width to 0,48. This will result in 3 outside walls. Layerheight for the print was 0,2mm

Enjoy!