I use these.
http://hobbyking.com/hobbyking/store...idProduct=9283
They come with the Turnigy/Zippy batteries and so far I have had great success with them. Easy to solder and will take a 10AWG wire no problem. Only trick is not to get solder buildup on the outside of the bullet as the plastic sheath will not lock in properly then.
You are really going to like your Wind. I was just flying mine yesterday and I am still very happy with it.
Cheers
MJ