I know you already solved your problem. I just spent my camping trip figuring out this thing and wanted to share for someone else pulling their hair out.
If it “sees” a full battery and goes into float, You can fake the controller out and force it out into bulk mode by throwing a big load on...
I was emailing renogy when i found this thread. Lots of good info. Made me feel better. Renogy summer sale?
Mine is similar to yours (same battery). I did a capacity test (down to cutout) using a DROK hall effect tester and the DC Home and I got about 105Ah @25Amps ( The max load my camper can...