Update on 1/11/18. Refreshed all files. Better routing to make it easier. I don't think a brim is needed.
The clips on top are stronger, but still has a
...Show more screw in the center for better holding. Print settings were .2mm layer height, 20% infill and it looks fine. I used a brim on part A only. It can take protected 18650s, but may be tight on some, or very loose on unprotected cells.
Use solid copper wire. 22AWG is all I have right now, but 20 should work. It can work just wrapping wire, but the main connector needs more work. I melted wire into the plastic but there's probably a better way. The 3B balance pin is used in tools for battery level and that one and the middle one have a 1K resistor on the original. The resistors (1/16w) were meant to fit into the holes vertically, so the leads become the contacts (need to be larger).
