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post #3 of Old 07-19-2012
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Re: Solar Conundrum

You may need to play the series/parallel game here. It will take four 12V panels to do this. Use your panels in series (4 x 12 = 48) to charge your 48 Volt bank (slowly over time) and configure them in parallel to charge your 12V house battery (rather fast since you will have more current in parallel) This will require you to use 12 volt panels for the entire rig. This is one solution, that only requires 4 panels. My reasoning is most higher voltage panels able to charge 48V will cook your 12v battery if you use them as a direct source. There is bound to be a vendor that has some type of "Smart" switch for this application, but I'm sure its pricey. I'm curious, whats the 48V DC motor you are using? Is this drive something you are making/designing yourself?
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