I would like to do a dual battery setup in my RC - now, I read the How To by GunPilot and understood the steps he laid out - but I have one question. As I understood it, the alternator will charge both batteries through the isolator. Now, I want to run a high wattage amplifier and speaker from the second battery. That will be the only thing on this battery. Now, the amp will take alot of juice and drain the second battery. Will this introduce a load for the alternator, in addition to the first battery?