Is this 3D model free to download?

Yes, Battery caps for AA, AAA, 18650 and other cell types is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by enif, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Battery caps for AA, AAA, 18650 and other cell types

Source: Thingiverse by enif

The Battery caps for AA, AAA, 18650 and other cell types is a free printable 3D model from Thingiverse by enif. This _"thing"_ was inspired by Mobilow's accu caps ( since I also always carry spare batteries with me - for my camera, my eTrex, my MP3, ... You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

6,404 saves Source: Thingiverse Updated 2026-10-06

Tags: Battery, caps, for, AA, AAA, 18650, and, other, cell, types

About this model

This _"thing"_ was inspired by Mobilow's accu caps ( since I also always carry spare batteries with me - for my camera, my eTrex, my MP3, ... The challenge was to find a design that a) would firmly hold all batteries of the same type, even if they are a tiny bit larger or smaller than the norm value, and b) that would be easily customizable for different battery types and an arbitrary MxN array of battery cells. The solution to the first problem was to add flexible "friction winglets" between the cells, which result in a firm grip of the battery cells over a reasonable variation in diameters. This way I can carry the "capped" batteries in my pocket all day without any fear that the caps will fall off by accident. The needed configurability is built into the .scad file, which contains a gen…

Frequently asked questions

Is this 3D model free to download?: Yes. Battery caps for AA, AAA, 18650 and other cell types is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by enif.
Who made this model?: Designed by enif, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.