The file '18650 Battery Holder 3D Printer Model' is (3mf,stl) file type, size is 420.2KB.
Basic 18650 Battery Holder
Made to fit contacts I got from Amazon: https://www.amazon.com/gp/product/B0B1ZJ8PNH/
It's made completely symmetrical so you can place the spring on either side and it'll fit properly.
Printing Note: The first version I made of this was too tight and it would flex when a battery was inserted. I increased the tolerances a bit to make it less snug and printed it with 6 walls to combat the flexing.
18650_Battery_Holder.3mf | 187.8KB | |
18650_Battery_Holder.stl | 585.1KB |