@bzmot, what I meant was you posted a link for XT30 connectors and asked me "By banana plug, do you mean this little fella?" and I was saying no those are not banana plugs and that they were XT30's. I then said you needed what Tevek had posted a link to, which is a Banana plug to XT30 adapter.
So you do not want these, they are bare XT30 connectors, and they are NOT banana plugs.
This is what you need and it is a banana plug to XT30 adapter cable. the banana plugs should fit in your B6 charger, and the other end goes on the battery.
DO NOT FORGET to attach both the main leads AND the balance lead, and only charge in Balance Charge mode.