I have currently four panels total in a series parallel combination. I should be receiving at least around 8 amps if I read the back of the panels right. Now in the series parallel we're doing two in series and then paralleling those two and we're doing that with two sets of two using four panels. I checked all of the connections with the multimeter and they're all strong. The reason why the voltage is low for four panels is because we live in a canopy with very little direct sunlight. We can't rightly chop the trees down because the trees that are blocking the sunlight are on someone else's property. So we have to accept diminished capacity as long as it's some kind of capacity giving us power. 
