Only the Hyperion balance adapter uses 5 pins for a 2S lipo balance connection. The other 3 adapters use just three pins for a 2S balance connection, but you need to match the type lipo and get the right one - they are slightly different and its not going to work if you get a JST-XH adapter board and you have TP lipos.


That earlier link has a listing of brands under each type adapter in columns. I'd hope you can find your brand and get the right balance adapter board.