Right, to charge that pack you should use the Balance Connector....

If your charger does not have a balance port or balance board, you can use the Equinox as I posted above.

You could also obtain a "hydra" adapter... and charge it via the Futaba plug, but I would not recommend this.

See this: [link=http://www.hobbyking.com/hobbyking/store/__18738__PLUG_KING_Multi_19_Mega_Charge_Plug_Adapt er_Set.html]Hydra Adapter[/link]