JST-XH balance port adapter bungs

thingiverse

I have a parallel balance charging board for 4S lipos and need to charge 3S or 2S with it. To do this safely, plug in the balance leads but be extremely cautious not to connect them to the wrong pins, as really bad things could happen. To prevent those terrible consequences, I use bungs that fit into the balance ports to cover the unwanted pins. This simple solution saves me from potential disasters. There are four different variants of these bungs available, which can block one to four pins, allowing you to connect a 6S socket to a 2S or 3S pack, a 4S socket to a 2S or 3S pack, and so on. I'd like to thank SnappyFPV for his initial 3D JST XH connector model that I remixed to create these bungs. His contribution saved me a lot of time: https://www.thingiverse.com/thing:1393615 I printed the bungs on my Prusa i3 Mk3 using PLA with a 0.4mm nozzle, no support, and a 0.2mm layer height. I used seven perimeters to create a nice concentric rectangle pattern on top, but two perimeters at 20% infill will work just fine. Minor update: On July 8th, 2019, I added a lip to the edge of the guide notch.