Wireless camera and main battery.
 

I just got my wireless camera for my models, but securing a PP9 battery along with the other RC stuff will be a pain, and i will need to change it often. Is there ever any kind of feedback or surges between a battery and ESC? I want to connect the camera to my main batteries, but I don't want to burn out my camera from dumping any current through it or a fluctuating voltage.