Just remember this with respect to solar panels.
- In parallel; voltage is limited to the lowest value parallel string.
- In series; current is limited to the lowest value in the series string.
Final comment is a example. Let's say you found a replacement with the same Imp, but much higher Vmp. What I would do is buy 2 panels, one for each parallel string to raise both string voltages equally. But at .6 volts is no problem.
Hope that helps.
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