Man I hate to solder.
Then don't.
The batteries come with whatever connector you want. Just tell the guy over the phone what you want. Or check the appropriate box on the website order form. I've dealt with the guy at the link below and he's pleasant, knows what he's doing, and my orders have gone out the door that day or the next.... and shown up at my door a couple days after the call.
BTW, for a TX you might want NiMH batteries. The TX load is relatively steady and NiMH don't really need cycling and don't have the NiCd memory problem. But heck, talk to the guy on the phone about it. He'll give you good advice. But don't sweat what to ask on the phone. Wait for the order to get to you and read his enclosed information sheets. They cover it all.
http://www.hangtimes.com/nobsbatteries.html