Two 100W panels in series. 30+ volts consistently all day, but never more than about 1/10th amp showing as being produced. Multi-meter touched to wires as they enter the controller (so I suppose in parallel with the controller) read between 3 and 4 amps.
When load hooked up to load terminals at 1A draw (a 2 bay 18650 battery charger set to 1A charge rate), I see the amp coming off the battery, not the panels. I never see any amperage coming in from the panels.
I suppose this might be naive of me, but I assumed that if I was drawing a load, that the panels would attempt to fill the need before the battery did? Battery is a 12V lithium ion pack, so don't be concerned about is reading 11.59V. It can go a lot lower than that before any harm done.
Might also be worth noting that I have the float voltage set at 11.5V and Absorption set at 12.4V. I know I don't really need to float a lithium battery, which is why I have it set so low. I have the load output settings at 12.25V for the "reconnect load, battery is charged enough" and 10.35V for the "disconnect load, battery is getting too low".
Nothing appears to be reversed for polarization, and this battery has sort or trickle charged itself each day (graphs show me 10-20Wh per day input) to maintain roughly 12V over time. I haven't really had a load on it before today, so no significant battery charging has been needed.
We also have been dealing with all the wildfire smoke for the last week or so. Today was the first blue sky day. So first day I expected to see some panel efficiency.
Screenshot below.
