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Mike Beckmann avatar image
Mike Beckmann asked

Different sized solar panels on same MPPT

Sailboat. Used to have six Lensun panels, on two separate Victron 75/15 MPPT---2 60 watt and 1 30 watt panel on each controller. Everything in parallel.Everything fine for 3 years, then the 30 watts died, and also one of the 60 watt panels died. Now want to replace with a 150 watt panel. So what I'm thinking is: one controller would have 2 of the 60 watt panels, the other controller would have one 60 watt and the new 150 watt panel. All voltages are 19-20 volts. Problems? Concerns? Suggestions?

Thanks for your help!


MPPT Controllers
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1 Answer
pwfarnell avatar image
pwfarnell answered ·

If they have the same or similar Vmp then connected in parallel they should work OK.

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