My BC6 has a single Align socket, but cannot plug 2S connector directly in, needs a cable/adapter lead, our B6 (and there is a few with this number) has a range of Align sockets, so 2S battery can connect directly (if same plug).
I am thinking you will need an Align male (depending on charger) to TP female.
I would suggest changing the battery balance connector - but plugs to fit yourself are difficult to find, but should be as simple as an receiver plug.
EDIT something like:
http://www.aeroshack.co.uk/shop/gbu0...am_eac129.html
or
http://www.aeroshack.co.uk/shop/gbu0.../JSTXH_FP.html
or
http://www.gobrushless.co.uk/Battery-Leads.htm the one awaiting picture !
or
http://www.maxamps.com/categories.php?cat=173
Useful:
http://www.modelflying.co.uk/news/article/mps/uan/459