18650 Battery Holders

These are based on the design/concept by Alex Yang (YXC) on Thingiverse (https://www.thingiverse.com/thing:2668159). I have tweaked the design in order to make these easier to use in prototypes by adding multiple ways of mounting them in enclosures and/or mounting grids. Each one can be mounted with either screws, zip ties or glue (or even a combination of those). At the same time, I've reduced the footprint needed to fit these in a box, reducing the original size from 91mm down to 78mm (with an optional 75mm version if you really need to squeeze out a bit more space). Electrical contact with the batteries can be made using a couple of options. Wrapping thin wire through the holes at the contact points works for a quick, no additional parts method, or you can use M2 or M3 screws through the centre hole and hold your wires in place with those. I've included 5 battery layouts:Single cellDual cell seriesDual cell parallelQuad cell seriesQuad cell parallelEach with a 75 and 78mm op