Herramientas y equipos

21700 Battery Holders and Cases: 3D Models to Print

This collection gathers printable parts built around 21700 and 18650 lithium cells: holders, closed cases, multi-cell packs, tool-battery adapters and small storage items. Most of it is meant for 3D printing on a desktop machine, with files shared as STL. It helps you organise loose cells, build a pack, or replace a worn holder instead of buying a new one. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Esta colección está escrita en inglés, pero la búsqueda funciona en cualquier idioma.

Una colección de Polyzon · 47 modelos de 5 plataformas

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Polyzon reúne esta colección a partir de los resultados de búsqueda de las plataformas conectadas. Se eliminan los duplicados y los modelos sin vista previa, las coincidencias débiles van al final y el resto mantiene el orden de la búsqueda. Los modelos pertenecen a sus autores: consulta las condiciones en la página de cada modelo.

Criterios de selección: el equipo editorial de Polyzon · Texto actualizado el 12/10/2026

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«21700 Battery Holders and Cases: 3D Models to Print»

The parts differ mainly in how much of the cell they cover and how the cells connect. Open holders grip a single cell and leave the terminals reachable, while closed cases enclose one or several cells and often include a lid, a switch cutout or a route for wires. Multi-cell designs add slots for balance leads or bus bars, and tool adapters copy the shape of a battery platform so a printed shell can take cylindrical cells.

Before printing, read the author's page for the cell format and the internal dimensions, since a small difference in diameter or length changes how a cell sits. Check how many separate parts the model has and whether they join with screws, clips or glue, and whether the author lists supports, layer height, wall count and material. Photos of finished prints show how the tolerances behave in practice, which matters more here than on decorative models.

To widen the results, search for the cell size together with words such as holder, bracket, tray, spacer, caddy or storage box, and try the older 18650 format as well, since many designs cover both. Related terms include battery pack, BMS enclosure, balance lead, bus bar, contact plate, dummy cell and vape or flashlight body. If you need a specific layout, add the series and parallel arrangement you have in mind to the query.

FAQ

Preguntas frecuentes

Which cell sizes appear in this collection?
Most models are drawn for 21700 and 18650 cylindrical cells, and some cover 26650 or smaller button cells. The author's page usually states the exact format and the internal dimensions.
What should I check before printing a battery holder?
Look at the internal diameter and length, the wall thickness and the way the cell is retained. Also check whether the model needs supports and which material and settings the author lists.
Can I print a multi-cell pack in one piece?
Some designs are a single body with several slots, others are split into modules that stack or bolt together. The page description and the part count tell you which approach a model uses.
How do I find a holder for a specific arrangement?
Add the series and parallel layout to your query, for example a pack with a given number of cells in series. Terms like tray, bracket, spacer and pack enclosure bring up different naming styles.
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