Ok I have searched some threads with no luck on this subject. What I want to know is if you have a 7.2 volt battery is it 7.2 volts in the servo? I heard really briefly that it's from the ESC. If it is in the ESC how do I find out how many volts go to the servo? Also if I get a servo with the same volts as my ESC do I still have to run 2 batteries? I think their is another way to go about it but I am not sure. Thanks for any of your help.