List Price: $160.00
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My first two controllers were PWM types. As I read and learned more about solar panels/solar systems I realized I'd be considerably better off with an MPPT type of controller. I bought the 20 amp size of the MPPT Tracer2210RN Solar Charge Controller to allow me room for expansion. I have a meter monitoring what's coming in off the panels, another meter monitoring what's coming out of the controller, a third meter telling me what's in the batteries. By using the PWM controller for several months I got to know and expect what those meters would say. After installing the MPPT controller, right away I saw considerable differences, all good. I saw the batteries recover faster and brought to a higher voltage (safely, as the directions had explained). I would have to say those claims of gaining 20-30% are true. MPPT is simply a much better system for charging batteries.
The internals of this unit are not anything I studied in school..I just followed the directions and go by what my meters are telling me. I would recommend this unit to anyone starting a solar system, or to anyone who wants to extract every drop of power from their present system.
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Seems to be a very efficient controller. With 520 watts of PV, It is charging my 240AH at 24VDC battery banks very quickly. I am running my air conditioner off my system, and so far, this controller does not disappoint. I wish I would have picked up the 30A unit, but this seems to work just fine.
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