Hello. I wish to power a model with an S-600 electric motor, 7.2 to 9.6 volts, but the radio system I own works with 4.8v (receiver and servos). What do I need to power everything with just one 7.2 battery package? I know that I need an ESC with BEC, but I do not have a clue how to make the above. Thanks or your help!