XT60 Male - Deans Male Converter Plug
So, your battery has as deans connector (t-plug) and your ESC has an XT60. Bummer... I used to run into this problem often. I would have to get out the soldering kit and change one or the other. If I had a plug on hand anyway... These converter plugs are often worth their weight in gold, just for the sheer convenience of them. Hopefully you'll find them just as handy as I did.