18650 Li-Ion battery holder

Yet another 18650 holder? Yes. But this one uses professional contacts as I didn't want to bend or screw some piece of metal. You will need these easy to solder contacts in addition to the printed part: https://www.banggood.com/10-Pairs-Silver-Tone-Metal-Battery-Spring-Plate-Set-for-AA-AAA-Batteries-p-1046111.html?

There are 4 different parts, caring for 1 to 4 cells.