Polarized Parametric Battery Holder

A basic polarized battery holder designed to use the Keystone 1107-1 battery clip. I've used it for AA and lithium batteries such as the 18650 and 16340 but it can be easily setup for other battery with a diameter of a AA or larger.

Features of the battery box:
- mechanically prevents the negative side of the battery from contacting the positive terminal
- alternating positive and negative terminals to shorten connections
- positive and negative symbols are marked at the bottom of the battery slots to indicate battery direction
- uses an inexpensive clip (the 1107-1 is less than $0.15 each in reasonable quantities)

If you change the values marked in the first few lines of the openSCAD file the number and size of the batteries in the holder can be customized. There are sample values for AA and couple sizes of lithium batteries in the comments of that file.