Battery Pack STL Generator

Generate 3D printable cell holders, enclosures, and accessories for your custom battery pack. Download STL files ready for your slicer.

New to building packs? Our step-by-step 18650 build guide covers sizing, welding, and wiring before you print anything. Use the Pack Planner to size your pack and pick a cell count, then browse the cell database to choose cells. Our essential tools list covers the supplies you'll need once you start building.

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Design your pack first

Create a custom battery pack layout in the designer, then export your STL files here.

Open 3D Pack Designer →

Or try a demo to see what's possible:

10S4P21700 · Rectangle

13S5P18650 · Hexagon

7S4P21700 · Wedge

What You Can Generate

Solid Plate Frame: A solid plate with circular cell holes and a 0.4 mm retention lip — matching how real battery frames are built and printed.
Enclosure Shell: Walls that wrap around your pack. Open top and bottom, sized to your cell height.
Case Lids: Flat plates that cap the enclosure with a recessed ledge for a snug fit.
Gasket: Thin flexible ring for vibration dampening between holder and enclosure. Print in TPU.
Cell Punch Template: Flat plate with holes at cell positions for marking spot weld locations on nickel strip.