I would rather have the specs from each component and add those to the specs of the MPPT to get my output, instead it sounds like you want the rated output of a panel to be what it would be if it was connected to 'X' device, right? so if I get a cheap MPPT then my output is less if I get next years model then my output is higher then spec and the only way to know is by looking at what the specs of the 'X' MPPT is?
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