I am so new to this but have really appreciated everyone's help with previous questions. We finally tested our setup ( 400W in series, panels (4 x 100W), 40Amp MPPT charge controller, 3000W inverter, (2) 12V 100Ah lithium batteries. We set up our MT50 monitor with parameter settings suggested by Will using Battle Born Batteries BUT did not change any of the other default settings. There are only "zero" amp readings on the monitor. Why would this be (there are a few fractions that show up periodically) nothing registers from solar panels and zero for battery though the battery has charged using the system set up, per the monitor, and appliances are running. Is this a defect in our equipment or what did we do wrong? Is there a way to check or is it possibly how we set up the monitor? Any help would be so great. I have tried to look online, and know I can go into the parameters with computer but I would not know what to look for. Any starting point suggested would be great! Thanks