I have developed some simple but functional solutions to use normal 18650 and 21700 LiIon cells as well as the original DJI LiPos for my breakout mod. Here I want to share the STL files with you and show you how to assemble them. If you develop other solutions, feel free to share them with the community :)
Caution: Working (and especially soldering) with LiPo and LiIon cells is dangerous. Short circuits can lead to fires and even explosions. This is just a brief overview. Inform yourself carefully before soldering battery cells. Everything is done at your own risk.