Hi,
Think your getting a little confused.
(Some transmitter pack have extra leads.)
The pack has three sets of connections. I have some transmitter packs with a similar setup.
1) Unknown lead (perhaps a different type of balance connector?)
A small white connector with two leads, (I think it's JR connection, I just ignore it.)
2) Futaba style radio plug (I know this type fits into the rear of the transmitter ok)
A black, servo type plug, with two leads, red/black. This is what you plug into the radio. You also use this for charging the pack. Basically it's the positive / negative connection of the pack.
3) JST-XH balance connector.
This is the balance connector for the pack, if it's a 2s pack it will have 3 wires into it. You connect this in to the balance port of the charger.
Let me know if this makes things clearer.
MiCk B. :-)
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