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ruburn asked

MPPT Charge controller sizing

If I have 6 x 330W panels (with Voc of 40.6 and Imp of 9.76) configured as 2 sets of 3 in series and both connected in parallel, what size charge controller would I need if used with a 48v battery?

My understanding is that the 3 in series would create circa 120v at 10amps but then adding the other panels in parallel would give a total of 120v at 20amps?


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MPPT Controllers
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klim8skeptic avatar image klim8skeptic ♦ commented ·
Your math's seems sound.
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klim8skeptic answered ·
Victron make a 150-35 that would be suitable.

For a few bucks more you can get a 150-45 and have a remote port and a programmable relay.


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ruburn avatar image ruburn commented ·
Thanks, I'm getting my 100/30 and 150/35 controllers confused :-)
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