XT-60 Connector Lock
This is a hack to prevent your 4s, 5s, or 6s lipo battery XT-60 connector from detaching on a severe quadcopter crash.
You must use TPU material when you print it with your 3d-printer.
You can see pictures and video of this XT-60 connector lock at https://www.youtube.com/watch?v=tvTt5NiHEU0