I have bought several lipo batteries from cbp and have had great products at a good price. I have 3 elite 4800's and a couple of the poly rc batteries. They test what they sell and are not overating them. All you need to do is add your connector of choice(i use deans) and your good to go. Don't forget when you get them it's a good idea to break them in . A couple cycles at a low discharge rate.