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18650 Case and Holder STL Files for 3D Printing

This collection gathers 18650 cases, holders and brackets shared as STL files for 3D printing. It covers everything from a single-cell bracket to multi-cell boxes and hinged enclosures, so you can match the shape to how the cell will be used. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Le texte de cette collection est rédigé en anglais ; la recherche, elle, fonctionne dans toutes les langues.

Comment cette collection est composée

Polyzon compose cette collection à partir des résultats de recherche des plateformes connectées. Les doublons et les modèles sans aperçu sont retirés, les correspondances faibles sont placées à la fin, et le reste suit l’ordre de la recherche. Les modèles appartiennent à leurs auteurs : consultez les conditions sur la page de chaque modèle.

Règles de sélection : la rédaction de Polyzon · Texte mis à jour le 13/10/2026


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«18650 Case and Holder STL Files for 3D Printing»

The most common kind is a holder or bracket that grips one cell, often with a spring or flexing arm to keep it in place. Larger boxes take two, three or four cells side by side, and some are split into a base and a lid that closes with screws or a hinge. A smaller group is shaped around a particular device, so the cell sits inside the same shell as the board it powers.

Before printing, read the author's page for the cell diameter and length the model expects, since 18650 cells vary slightly and a tight fit can crack a thin wall. Check how many parts the model has and whether they are meant to be glued, screwed or snapped together, and whether the geometry needs supports. Look at the material and settings the author lists, and at photos of real prints, because wall thickness and layer direction matter where the holder flexes.

To narrow the results, try related terms such as battery holder, cell bracket, battery box or enclosure, and add the cell count you need. If the model is meant for a specific board or device, searching that device name alongside the cell type usually returns a closer fit. You can also search by the way the case closes, for example hinged, screw-on or print-in-place.

FAQ

Questions fréquentes

What is the difference between an 18650 case and an 18650 holder?
A holder usually grips the cell and leaves the contacts accessible, while a case encloses it fully or partly. Many models sit between the two and do both.
Do 18650 cases need supports?
It depends on the geometry. Flat boxes and brackets often print without them, while round cutouts, overhangs and hinges may need supports. The author's page usually states what was used.
How do I check that a cell will fit?
Compare the dimensions given on the model page with the diameter and length of your cell. Protected cells are longer than bare ones, so allow for the extra length.
Can the same model take other cell sizes?
Some files are drawn for more than one size or include a scaled version. Check the description for the sizes covered before printing.

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