Solar charging question


New member
Local time
4:26 AM
Mar 17, 2023
I know that I could 'be empirical' to answer this question, but I thought I see if anyone knows off the top of their head:

Is it better to run more than one panel in parallel or series when connecting to the charging controller?

Background, I'm charging a 48V battery using a boost mode MPPT charging controller. It can accept any input (solar panel output) voltage, as long as it's below the battery charging voltage I set the controller output to (in this case 54V).

So in parallel to get higher input current to the charging controller? Or in series to get higher input voltage? Or ... it doesn't matter, basically the same results either way? Or ... it depends on the controller?

Panels are nominal 12V. I'm connecting 2 or 3 panels to the charging controller.