BFL13, this is another controller - Renogy (not Epever that I tested last week). Unlike Epever, this one has pre-configured settings for Li as shown in post #1. I didn't change settings and couldn't, this would require Bluetooth dongle which I don't have yet :).
Yes, it seems like the controller thinks the battery is near full and is in Float - despite being in Li setting where there is no Float and no Absorption, it disconnects when reaching 14.4V. Display reads 80-90% SOC depending on whether there is a load or not, though battery voltage sags very little under load - from 12.9 to 12.8. Poor firmware, IMO.
