ORIGINAL: ProfitOfDoom
Im not sure what RC that is,,but if your looking for a lipo 7.4 "that would be a 2s" I run Gens Ace packs,there pretty cheap and they worked well for me. Im not sure how shipping will work for you but check out HobbyPartz.com and HobbyKing.com gens ace are at hobbypartz,and hobbyking look for turnigy nano tech packs there also cheap and got great reviews "I havent used them personally" as far as the 11.1 you will have to read to make sure your electronics can handle that.
I run Gens Ace as well, the only problem is that most of all the Lipos show out of stock or backorder on both sites for some reason....