M18 Battery Adapter for quadcopter, skateboard/longboard, or vehicle

thingiverse

This adapter (latest version 4.1) serves as the foundation for my mUAV, which is being documented on RotorBuilds: https://rotorbuilds.com/build/20987. It utilizes a 12Ga wire with crimped spade connectors (un-insulated with heat shrink worked well for me, but a really tight crimp on insulated connectors can fit too) running through the back. Similar to a 5S, M18 provides a convenient way to swap batteries without the need for special battery chargers, while maintaining versatility for other tools. Nylon prints are recommended. I used PETG for the first flight test version, which broke after a tough crash. Designed with countersunk slots for flathead M3 bolts with 20mm and 30.5mm hole spacing common in most aerial vehicles today. It also features 45x39mm hole spacing used on my "Chenobyl" frame. A pair of these mounted to a skateboard/longboard would be fantastic too. There are two optional prints, which can be used to direct the wires out the back. One directs the wire up, while the other holds them down. An M3x5mm threaded insert on the back helps keep it in place (soldering iron insert method).