diy solar

diy solar

EPEVER MPPT Solar Charge Controller 40A wattage

The rated charge power of the 40A Tracer is 520W/12V.
I emailed epever and asked why in my paper leaflet it says "Max. PV Array Power": 1560W/12V but in the version from the internet is says 780W/12V, and they answered saying that 1560W/12V was an error and that they do not even recommend the 780W/12V (which is 1.5 x 520). So my understanding is that you should not exceed the "Rated Charge Power" of 520W/12V, but a little more won't kill the charger controller which is why they give you a "Max PV Array Power" of 780W/12V. This way you can over-panel a bit to have those 520W a little longer during the day.
 

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  • the explanation for max. PV power and rated PV power.pdf
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