This harness joins the hyperion balancer to the hyperion adapter boards, so I guess it will fit your board. It's 5cm longer than the harness that comes with the charger, but I can't see the standard one listed on that site.
http://www.allerc.com/product_info.php?products_id=3704
This page list which balance plugs different batteries use. Looks like you don't need it now, but it might be useful later.
http://www.rcaccessory.com/pdf/Batte...on%20Guide.pdf
What batteries do you want to charge at the same time.