I'm guessing that you didn't read the public apology that I posted to say that I'm sorry I called you a moron and an idiot with more money than brains. I looked through my manual and it says not to use higher than 6.0v reciever pack but got an e-mail from Hitec that states you can use it with a 7.4v unregulated pack with no problems and that it won't affect the warranty in anyway. I apologize and hope you will forgive my being an idiot.