Spektrum Radio Milwaukee M18 Battery Adapter

thingiverse

Adapters are actually a lot of fun and very useful! Here's one for the Spektrum crew that also happens to use Milwaukee M18 gear. For this project, you will need the following: - 1x M3 screw - 2x Male Crimp Connector (for the battery slots) - the blue ones work fine - 2x m3 set screws (to secure the crimp connectors in place) - 1x mini 360 adjustable buck converter or similar - Some wire - paperclips I set the voltage output on the buck converter to 5.3v for safety. These 18-volt packs can output over 20 volts, which will fry your radio if you don't drop down the voltage. I added a small heatsink to my unit for extra protection. I modified some paperclips to fit into the radio battery tab ends and soldered them to my output wires with heatshrink. There are support tabs already designed in that need some trimming. The holes for the screws are nice and tight, so I suggest tapping the holes with a bit of effort, but you can use the screws themselves to tap if needed. Print parts as they have been laid out and in their original orientation for best quality. I made the tab a separate piece and slotted it with a screw, so it can be replaced if needed without printing the entire part over again. I printed with ABS, so this has been scaled to account for shrink. Be warned: this may need to be adjusted for your printer/filament. Credits go to the following Makers for their original files that I used: Ph3nyx: https://www.thingiverse.com/thing:1700124 macsboost: https://www.thingiverse.com/thing:216786