I designed these as an extra layer of protection against short circuits for my battery when removing it from my car or disconnecting it. Use is entirely at user's own risk. I accept no responsibility for any kind of damages or injuries whatsoever. It is the user's responsibility to make sure that fit is correct and that the material used is suitable for intended purpose. Plastic caps may shatter with impact, eliminating any protective value.

As I printed them, these terminal caps fit my Diehard Gold 35 Group Size 12V battery. They are snug, but not so tight that they are difficult to remove. The positive terminal is larger than the negative terminal, so two different print files are provided accordingly.

I have provided the FreeCAD file that I created in case you would like to alter the files for different terminal sizes, etc.

Creality

Ender 3

No

No

100%

Ensure that your selected filament is non-conductive.

Optional: Using a permanent marker, put a + and a - on the respective positive and negative terminal posts.