swtk421

I just purchased a traxxas 6v hump pack for my t-maxx. It has the Futaba J connector on it. I am wondering how I can make it work with the dynamite twin peak charger so I don't have to buy another charger that only works for one battery. It looks like the traxxas peak charger that I would need charges the fast cycle at 750-1000mA. The dynamite has an automatic setting of 1 A for 5 celled batteries.
So it appears amperage-wise I am ok? How do I make the adapter to fit?The gauge wires of the tamiya plug I have is a lot heavier than the one on the J adapter.