Recently purchased an Onyx 235 balance charger for my Xcelorin 3800mah 7.4V lipo batteries which use bullet connectors.

I wish to do away with the balance board and wire up a connector set that will run directly from the charger. However I can not find any adaptor cables that have the correct balance plug for the Onyx charger.

I can buy a balance plug online that will fit in the 5 pin port on the Onyx but I don't know what pins are used for negative and the balance plug (2mm bullet connector).

I'm attaching a pic of what I want to build or even purchase but the balance plug on the end is the wrong size (3 pin) or brand for the Onyx charger port (5 pin) so I can do away with the balance board.