I want to add a secondary battery bank to the hybrid and have that send a charge to the primary battery. I am considering 2 wind turbines mounted in the radiator inlets. I want to have the turbines charge a secondary battery that will feed to the primary battery. I am doing this to prevent overcharge of the primary battery. Questions: Does a standard charge controller have the ability to charge to the secondary battery and prevent overcharge? Do I need to have a device to prevent the electricity from going back to the turbine and spinning the motor/turbine How do I send the charge from the secondary 12V secondary to the primary 330v battery? I have not been able to find a dc/dc converter for that high of a voltage. What is used to prevent the secondary battery from being totally drained. I want to have is cycle to no less than 30% of a remaining charge to aid in longivity. Is there anything specific for battery to battery charging that I need to know? I have had a hard time finding this information on the internet. thank you.