David...You can run your radio off of a 6 volt sealed lead acid battery. It will make the servos run faster and be a little stronger too. If this is the main battery for the model I would not recommend doing it because if the battery dies your radio dies too, and then you loose control. I have limped in with a low main battery, because my radio was fed off a secondary battery.
Jim Wheeler....."Life is not measured by the number of breaths we take, but by the moments that take our breath away."