question

sun-rocks avatar image
sun-rocks asked

Adding more panels which are not exactly the same as originals

Hi

My system is as follows: 4 x 260W panels wired 2 in series + (in parallel) 2 in series to give 24V, fed into a Victron MPPT 100/50 charge controller. I'd now like to add 2 more panels but can't get exactly the same ones as original. The specs of originals are:

Pmax 260V; Voc 37.6 V; Vmp 30.5V; Isc 8.95A; Imp 8.53A

The specs of the new one's that I want to buy are:

Pmax 260V; Voc 38.6 V; Vmp 31.2V; Isc 8.94A; Imp 8.33A

Is the difference in specs too great for the MPPT contoller to operate properly?

MPPT Controllers
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3 Answers
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JohnC answered ·

Pretty close. Should be fine. Rock on..

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adev avatar image
adev answered ·

What JohnC said, see this link for more info:

https://solarpanelsvenue.com/mixing-solar-panels/


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sun-rocks answered ·

Hello JohnC and adev

Thank you very much. Bought panels today, going up this weekend.

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