Ultimate GreenWorks (40V) Battery Adapter
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Features polarity markings, high-current blades (using 1/4" copper tube), 20x20mm mounting holes, and strain relief.
- Ocena
- 5 / 5
- Polubienia
- 45
- Pobrania
- 466
- Wydruki
- 1
- Wyświetlenia
- 3005
- Oceny
- 2
Aktualizacja u źródła:
Informacje o modelu
- Źródło
- Printables
- Kategoria
- Electronics
- Licencja
- Creative Commons — Attribution — Share Alike
I was not satisfied with the available battery adapters for use in my tiny electric go-kart build. I needed something stiff that I would never have to worry about.
Designed for the 40V series of Greenworks batteries.
Features polarity markings, high-current conductor, 20x20mm mounting hole pattern, and strain relief.
Required:
2x 33-40mm piece of 1/4" OD copper water line tubing. Wall thickness is 0.5mm.
Commonly sold in US stores as an "Ice Maker Supply Like Kit"
Found elsewhere as 6mm OD, 5mm ID copper tubing.
2x 15mm M3 socket cap bolt with M3 nut
Print vertically in PETG for least amount of support material and smoothest fit.
Build it:
Tip: Cut longer pieces of copper tubing than necessary. Then trim to size at the end according to the dimensions drawing.
Straighten and cut approximately 33mm (40mm for HP series tabs) of 1/4 inch copper water line tubing.
Carefully flatten the last 13mm (20mm for HP series tabs) of one end using smooth vice jaws to avoid burrs.
For the HP (High Power) series of Greenworks battery tabs ONLY: remove a 3mm by 7mm rectangular area using wire cutters or a file.
Verify blade thickness is 1.0 to 1.25mm and overall blade height is about 9.5mm to 10mm.
Chamfer cut edges.
Solder wire (or female banana jack) into open end.
Repeat for other terminal.
Push in both terminals firmly while maintaining vertical alignment. Approximately 13mm (or 20mm for HP series) of the blade should protrude from the inner backstop. (see pictures)
(HP series should have the notch point downward.)
Finish it off with the strain relief shoe and two 15mm M3 bolts w/ nuts.
Finished Copper tube dimensions:
Render showing HP series tab placement:
Updates:
28 May 2026: Improved battery fit (terminals were slightly too wide) (v9)
28 May 2026: Added support for HP series of 40v GW batteries (v10)
28 July 2026: Improved (tighter) fit for less vibration. (v15)