These are battery holders inspired by the M13 desintegrating ammo belt, with a satisfying click once you push them in. Included are renders for AAA/AA/C/D/18650 cells. I added the distance from center to center in the file name, so that you can space multiple holders in a single print and save on some scaffolding material (see final picture)

If you want to make other dimensions, open the script and alter the height and diameter variables.

I actually designed the printed ones in the photo a year ago, mostly guessing values. Now the script is properly coded up, and the height of the print corresponds to the length of the battery (unlike the prints in the photos).
I have yet to print the new version (though I don't see what could go wrong), and I have no C or D cells, so I am unsure on how strong they are. I might print some 18650 ones myself, and alter stuff if it pops up. If you want to thicken the diagonal walls, change the value of r on line 78 and render them again.

Creality

CR10S PRO

No

Yes

200

20% Triangle