I have issues with my MPPT as it is not charging the battery. On the attached screenshot you can see that the AGM battery is supplying the load but the charger is not starting. It was days with pure sunshine and it was only charging the first two days. This is now present from more than two weeks.
I know, that the panel needs to be +5V compared to the battery to start charging but to me it seems, that there is a voltage drop and the panal voltage is following the battery voltage.
I already checked the fuse and it is ok. Also the input voltage at the controller is the same as measured in the app.
It would be great if you could tell me, what I am doing worng or what am I missing here.
Many thanks in advance!