What is auto-battery-frame-generator-2026?

Auto Battery Frame Generator is a browser based design tool for building custom frames around battery cell packs, aimed at people who spot weld their own battery packs and need a frame that matches an exact cell layout rather than a generic box. It runs as a single HTML file, so you can open it directly in a modern browser and use it offline, without installing anything or running a server. The tool works by letting you place battery cells on a grid and choose how they are arranged, either in a square pattern or a triangular one. You can then pick how the outline of the frame should look: a straight sided shape or one that hugs each cell closely. If your pack layout is not symmetrical, you can mirror the design horizontally to match. Under the hood it uses OpenCascade to generate real CAD geometry with true curves, and it shows a 3D preview with dimensions so you can check the shape before exporting. Once you are happy with the design, you can export it as a STEP file for use in CAD software or as an STL file ready for 3D printing. The workflow is straightforward: place the cells, adjust the outline, review the preview, and export. There are no external config files to edit, since all the settings live inside the browser interface itself. To use it, you can clone the repository and open the main HTML file locally, or use the hosted version linked from the project page. It only needs a modern browser and some free disk space for the exported files. The project is released under the GNU GPL v3.0 license.