Cylindrical Battery Pack

thingiverse

# Cylindrical Battery Pack This project is a fully 3D printable and functional battery pack designed primarily for 18650 cylindrical cells. The design uses only filament and solid core wire, and can be printed without supports. It uses two threaded caps that can be screwed together to form a stout connection between terminals. Cells can be easily removed and replaced. Depending on the configuration of the wire winding, the holder can be set up as either a series or parallel battery configuration. This design is highly customizable! It can be easily modified to accommodate double or triple-stacked cells. By adjusting the parameters in the OpenSCAD file, it is possible to create a case for anywhere between one and 18 cells. It is also possible to adjust the parameters to fit any size of cell. ## Features - Fully 3D printable - Designed for 18650 cylindrical cells - Requires only filament and solid core wire. No springs or screws - Easy cell replacement - Highly customizable ## Prerequisites - 3D Printer with any type of filament - Solid core wire ## 3D Printing Instructions You can print the battery holder on any FDM 3D printer. Adjust your settings according to the specifications of your printer and filament. ### Recommended Print Settings - Layer Height: 0.2mm - Infill: 15% - Supports: No - Raft/Brim: Not needed ## Assembly Instructions 1. Print all the parts using your 3D printer. 2. Cut the solid core wire into appropriate lengths for the battery contacts. 3. Thread the solid core wires through the designated slots in the battery holder. 4. Screw the components together using the threaded caps. ## Usage To use, insert your 18650 batteries into the holder. The design ensures a secure fit and the solid core wire provides the necessary electrical connections. I highly recommend using 22 AWG solid core wire. This wire also works extremely well with these [solder-free connectors](https://www.amazon.com/WMYCONGCONG-Connector-Universal-Connectors-Wire-Stripping) that are available on Amazon and eBay, which I find to be very user friendly and nice looking. ## Customization By adjusting the design parameters, you can modify the holder to contain more cells in a single container, or to allow for double or triple-stacked cells. This allows for a symmetrical case to be made for anywhere between one cell and 18 cells. ## Contributing Contributions to improve this design are welcome! Feel free to fork this project and submit pull requests. ## License This project is licensed under the MIT License - see the [LICENSE.md](LICENSE.md) file for details.