Here's the idea, I have a 10 ft fishing boat powered by a 12 volt trolling motor. I want to hook an electric motor that will turn the alternator to charge the batteries. I'm not sure how this stuff works 100% and I haven't seen anyone ask this question. If I have a 12 volt motor turning a 24 volt alternator, it should send 12 volts to the battery charging it right? I'm trying to learn how to do this and I'm building this from scratch. Can it be done by this design? If it can, can you give me some tips and pointers on how to achieve what I'm trying to accomplish? I'd like to be able to run the motor at the same time but by my southern math, a 12 volt trolling motor and a 12 volt electric motor turning a 24 volt alternator would only move the boat and not charge the battery until the trolling motor is switched off correct? Be gentle. I have an idea and if I'm dead wrong, explain to me why it won't work. Thanks.