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Hey thanks so much Dzl! Super helpful and clear, much appreciated. And in my original calculation it looks like I made a mistake. 2 x 50W in series - 36V 2 x 100 W in series - 36 V putting them both in parallel, I don't add the voltages to get 72V, rather, the voltage stays constant at 36V...

Hi Forum! First - I've done so much lurking on this forum and really appreciate all the information people have shared. This has helped me begin my purchases and I'm now in a position to start putting everything together. Equipment: 1-2 MPPT controllers, an Epever 30A (3215BN) and a Renogy...

Thanks! So, just to be clear, if my controller takes 400W at 12V or 800 W at 24 V....and I'm using the 12 V battery bank, should I assume that I still have to make sure my total wattage is 400W or less? So I can increase my voltage by putting some of my 12V panels in series, but I'm still stuck...

Hey Thanks, snoobler! The two 50W in 2S and the two 100W in series, with both series sets in parallel to the controller. The 2 100W panels are 17.9 VMP, the 2 50W panels are 18.1 VMP. So, from my original post, I think my plan is lining up with what you're suggesting? This is what I wrote...

Ok gotcha, yeah that makes sense from what I've seen as far as what I'll actually pull from the panels (given the losses that occur in the chain). But, it sounds like you are saying that yes, as long as my battery bank is 12V, regardless of whether or not I wire some panels in series to make...