I’ve just installed a 300w solar panel and 100/20 MPPT smart to my van with a 12v 95ah class A AGM battery. I have, I guess two problems, one being the voltage seems very high (13.77) when not in use? See photos.
Second, when I first installed the system the battery seemed to sit at 12.8 but after loading the system for 30mins it dropped to 12.6 then by one hour 12.40 to which I turned the load off! X3 2w led lights and a fan vent. It said the current was 1.9amps be pulled. I turned them off as I heard dropping before 12.30 could damage the battery.
Not sure what I have done wrong or if I need to set the app up correctly?
I plan to add a second battery in parallel but don’t want to do so until this issue is sorted.