WAGO Power Adapter for Milwaukee battery (M18 System)

📝 Description

This 3D printed adapter allows you to use a Milwaukee M18 Li-Ion battery as a portable power source via WAGO 221 lever connectors.

The design uses M3 screws and nuts for a solid and reliable assembly — no glue, no permanent joints, easy to assemble and easy to service.

Perfect for powering small projects like Arduino, LED strips, sensors, or for testing circuits when no power outlet is available.
The adapter fits the Milwaukee M18 battery system securely and can be printed without supports.

⚙ Printing & Assembly

• Material: PETG / PLA+

• Layer height: 0.2 mm

• Infill: 30 %

• Supports: Not required

Hardware:

• 2x WAGO 221 connectors

• 2× Faston connectors

• 4× M3 screws

• 4× M3 nuts

Simply crimp the faston connectors onto the battery contacts, connect the wires to the WAGO 221 clamps, screw the adapter together, and slide it onto the battery — done.

⚡ Safety note

This adapter is intended for low-current prototyping and hobby use only.
Do not use it to power tools or high-load devices.
Always check polarity and use properly rated wires and components.

💬 Designer’s Note

I wanted a clean, reusable, and modular way to use my Milwaukee M18 batteries for small workshop and electronics projects.
Using WAGO 221 connectors makes the adapter fast to wire, safe to use, and easy to modify for different setups. For someone who want this WAGO adapter for Prakside I made this: