I understand, I think.??? If I put 2 6V batteries on seperate switches, and the first battery serves the RX, The second battery is plugged into a vacant channel, thus delivering 6 volts. If one battery starts to fail, will the second battery pick up the loss?. That is my actual question but I didn't write it down correctly. Let's say the first battery is 6.50 volts, the seond battery is 6.10 volts. They both will show green on the Voltwatch, but are they sharing the power to the RX on seperate swiches?