I went ahead and built my own stands because I live in a complex and can't just attach them to the roof. These panels are fully portable and now that I know they work, I'll attaching them with a hinge so that I can collapse them onto each other at night and have one big solar panel that...
So when there's no load, the charge controller reads 40-42V at the solar point and the batter read 27.2V
When on load, the charge controller goes down to about 26V at the solar point and the same at the battery
No setting whatsoever. I literally have 2 lights on the back. A green blinking light that tells me it's charging (whether the panels are connected or not, so no help). And a red fault light that I assume comes on when it's broken. I have no other way of telling what it does and I think that's...
I can't tell you exactly on each battery since I would need to open the cabinet, but if I take a reading from the back of the inverter terminals I get 27.1V
EDIT: Sorry my short term memory is failing. Double checked now and it's 27.2V
Currently, it was at 38.1V but I'm assuming the panels aren't warmed up all the way yet (but peaked at 42.2V yesterday) but the mains are also on. As soon as I turned the mains off now, the charge controller started and decreased the volts till it got to 25.9V
@Grouter what charge controller do you have? Mine brings the volts down to 25.8V. Can it also be that I can only charge at 10A since I have AGM batteries?