Daz, to charge the battery you just need a banana plug to Futaba lead. To keep the battery in good condition every so often you will need to balance charge it.
The balance port on the charger isn't made to have batteries plugged straight into it as there are so many different balance plugs around. The balance lead you linked to will do the job, but I would suggest a balance board instead
http://www.wheelspinmodels.co.uk/i/88018/ as it will also allow you to balance charge your car lipos as well.