from what i have read the servos see the voltage of the battery and the signal wire to the servo is the only thing that the power jack regulates that is why i needed to run a reg cause the battery voltage is 7.4 volts,,i have plenty of planes with this set up useing lithium ions and 6 volt regs with hitec servos the only thing new is the power jack thought it would be a good idea to add it cuase it distirbutes the power to the servos not the receiver and has two battery inputs