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lemon avatar image
lemon asked

Smartsolar 75/15 ok for 36V/7,7A input?

Hi,


I have 3 solar panels (1x 180W, 2x50W, all with 36V) in parallel so that I have 7,77A at 36V of max. PV charge.

My dealer says that I need at least the SmartSolar 100/20 for these panels, but shouldn't the 75/15 also do the job? I mean, the 75 stands for the max. input voltage and the 14 for the ampere, and both of them are not reached with my configuration.


Thanks for your help!!!

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2 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

15A charging current into the battery(not the PV current).

But you should not use different panels together at one MPPT.

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lemon avatar image
lemon answered ·

Hallo Matthias,


thanks for you answer, so maybe the 100|20 or even the 100|30 should be the better choice.

Why would it be a problem using different panels? Unfortunately on my camper this will be the only possibility as 2 x 180W won't fit.


Thank you again


Andreas

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