I have a 6s lipo battery. When I plug in for load balance charging. One of the cell is not connected, seems to be some problem with the wire of the white connector not connecting.
Any idea if this is still safe to use?
I've had the same problem a while ago - I had two Robbe 6s LIPOs (4200mAh) and both had a dead cell. I'm afraid you won't be able to do anything to repair it - just buy a new LIPO from a different manufacture. It might be a bit risky to use a 5 cell 6 cell battery if your ESC is setup very sensitive (due to the loss of voltage).