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40138 LiFePO4 3D Models: Holders, Boxes, STL

This collection gathers STL files for building and housing LiFePO4 battery packs, from single-cell holders to full pack enclosures. Most entries are aimed at cylindrical cells in the 40138 family, with a smaller group covering prismatic cells and terminal hardware. It is useful when you are assembling a pack and need parts that fit your cell count and layout rather than a finished product. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

O texto desta coleção está em inglês; a busca funciona em qualquer idioma.

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O Polyzon monta esta coleção a partir dos resultados de busca dos sites conectados. Repetições e modelos sem prévia são removidos, correspondências fracas vão para o final e o restante segue a ordem da busca. Os modelos pertencem aos seus autores — confira os termos na página de cada modelo.

Regras de seleção: equipe editorial do Polyzon · Texto atualizado em 12/10/2026


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«40138 LiFePO4 3D Models: Holders, Boxes, STL»

The largest group is cell holders and spacers: grids that keep cylindrical cells at a fixed pitch, in layouts such as 1x4, 2x2, 2x4 or 4s1p. Alongside them are pack boxes and enclosures, including panel designs for standard cases, and small accessories like terminal caps and clip-on covers that sit over threaded posts. A separate set covers prismatic cells and complete pack housings, which differ in shape and mounting from the cylindrical holders.

When choosing a model, start with the cell dimensions and the number of cells in your intended configuration, then look at how the parts join: whether the holder is a single piece or several plates, whether screws, rods or tape hold it together, and whether the author shows the wall thickness and clearances. Check the listed material and print settings, and look at photos of real prints to judge tolerances. For packs that carry current, also review how the design leaves room for busbars, wiring and terminal access.

To narrow the results, search by cell format and layout terms such as 40138 holder, 4s1p, 2x4 grid or cell spacer, and add words like pack, enclosure or case when you need a housing. Related searches include other cylindrical formats in the same series, prismatic cell mounts, terminal covers and parametric holders that you can resize. Combining a cell format with a part type usually returns more focused results than the format alone.

FAQ

Perguntas frequentes

What cell sizes do these holders cover?
Most designs in this collection target the 40138 format and neighbouring cylindrical sizes in the same series, while others are made for prismatic cells. Always compare the stated cell diameter and length with your own cells before printing.
How do I pick the right holder layout?
Decide the series and parallel arrangement of your pack first, since that fixes the number of cells and the grid shape. Then check whether the model is a single printed block or a stack of plates, and how it is fastened.
What should I check on the author's model page?
Look at the dimensions, the number of parts, whether supports are needed, the material and settings the author lists, and photos of printed results. These details tell you more about fit than the preview image alone.
Can I adapt a holder to a different cell count?
Parametric and modular designs can be resized or repeated to reach another layout, while fixed-grid holders cannot. If you change dimensions, recheck wall thickness and the clearance around each cell.

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