Hello, for some years I have owned a 300w monocrystalline panel with mppt smartsolar 30A regulator on my rv where I live.
Now I would like to increase the power of the photovoltaic.
I'm undecided whether to replace the current panel with a 450 watt half cut ... But. I'd rather add another 300/400 watt to the current.
What do I have to respect to couple 2 non-identical panels?
What happens if one has the MPP voltage at 32 volts and the other at 34v and I put them in parallel?
Or what if one has the max current at 9A and the other at 10A and I put them in series?
Thank you