VOLTAGE SHARING

Could some one explain how one could use the arduino to switch between two voltage sources?

I am trying to prolong the flight time of a plane am designing for my senior project. I thought that i could use an arduino and program it to switch between two voltage sources. When one voltage drops below a certain level, the arduino will switch to the other battery. Please help!!

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  • Is there a specific reason you wouldn't just hook both batteries up in parallel?

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