cuz the problem is that i have 2 cordless 18V drills running off of a 6V 42 amp per hour battery with a 12V 38 amp per hour battery. i also have 2 little 12V motors (draws less then an amp) hooked out to the 12V. The reciever needs a constant 5V , i could use a 7805 regulator with the 12V, but i would like to use the 6V for the reciever's 5V.