Ok, I'm still not following exactly what you want to do. I noticed you linked a charge controller earlier in the thread... despite the MPPT in the name, that is a PWM charger and will seriously hurt your conversion efficiency.
A bigger problem I don't think you've covered yet... the 24 V Walmart battery can not be charged by a 12 V panel. If you go with that battery, you will definitely need a different panel, or two of them in series.
Edit:
What do you mean when you use the term MPPT? I'm getting the idea that your definition and mine might be different.
Another edit: Is tracking the sun actually required for the project, or are you assuming that by tracking the sun you will get more power and therefore it is something you should do?
A bigger problem I don't think you've covered yet... the 24 V Walmart battery can not be charged by a 12 V panel. If you go with that battery, you will definitely need a different panel, or two of them in series.
Edit:
What do you mean when you use the term MPPT? I'm getting the idea that your definition and mine might be different.
Another edit: Is tracking the sun actually required for the project, or are you assuming that by tracking the sun you will get more power and therefore it is something you should do?
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