18650 to 21700 battery adapter
Source: Thingiverse by Alex-S
The 18650 to 21700 battery adapter is a free printable 3D model from Thingiverse by Alex-S. Allows using 18650 batteries in a 21700 battery charger/tester. You can download the STL file from the original listing below and print it at home.
About this model
Allows using 18650 batteries in a 21700 battery charger/tester. I bought a lithium battery tester with two slots for 18650 batteries and two for 21700s. However, it turned out that I rarely need to test 21700 batteries, whereas I use 18650s frequently and in large numbers. So, I decided to make an adapter that would allow me to use the 21700 slots for 18650 batteries. The adapter is designed as a sleeve with one open end. A copper terminal is fitted at the other end. The design was created for printing with a 0.6 mm nozzle. The necessary clearances and internal walls were calculated based on this size. The adapter's dimensions also account for the size of the terminal. The contact terminal is handmade. I fabricated it from a short section of copper air-conditioner tubing with a wall thickn…
Frequently asked questions
- Is this 3D model free to download?
- Yes. 18650 to 21700 battery adapter is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
- Where is the STL hosted?
- The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by Alex-S.
- Who made this model?
- Designed by Alex-S, published on Thingiverse. Please credit the creator when sharing your print online.
- Can I print this at home?
- Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.
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