[BrianG]

OK, I think I see now. I initially missed the little square thingy (balance plug) on the end, and was thinking more along the lines of the old Trakpower hard-case packs with one center small bullet connection. The dual plugs are presumably paralleled to better handle the current the battery can deliver. Although, a simple move to 6/5mm Castle-like plugs would negate the need for paralleling, but whatever.