Here's what I'm using but realize I'm a Budget flyer and the last time I posted this link the other Corona Flyers blasted me a bit, but hey they work for me since I'm not using a brushless rig and they seem alright
http://www.batteryspace.com/product....278&1=279&3=69 and that's 2 packs not 1. I charge them using an MRC 959 SuperBrain chager which I think you can still get for under $50 at Towerhobbies