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I've also been looking at SCCs and got good advice above..
"with these 100W panels Voc and Isc, a 3S 3P is as high as you can go within reasonable Renogy 100/
20 Voc Isc limit safety margin."
and also that
"When you see a rating on them [SSCs] like 20a or 60a, that's the maximum OUTPUT to the batteries at system voltage. So, a 20a SCC on a 12v system can pump 20a of current at 12v, or
240-ish watts MAX".
I'm probably misinterpreting both; one seems to say that, with 3S3P, a 20 Amp SCC would charge my 12v 100Ah batteries fine (and they are nicely cheaper than the 60Amp SCCs!)
and the other suggestion seems to say that a 20 amp SCC can only charge 240W max. My confusion makes this last decision difficult.
Since I obviously don't have sense enough to interpret 2 good explanations, let me just ask,
for the 2 phases described in the 2 sketches above (the 2S2P w/11.12A and the 3S3P (later) with 16.68A, do I need a high-amp SCC and, if so, how high?
I'm looking at this 60A Renology:
https://www.amazon.com/Renogy-Solar-Charge-Controller-Adjustable/dp/B07PXJPSTY/ref=sr_1_4?keywords=renogy+charge+controller&qid=1680720261&sr=8-4&th=1 for $289.99 and
also at a 20A Renology Rover for $79.95 that might be easier on by budget...but if it won't efficiently put the panel power into the battery, of course I will choose a larger one.
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