Need help interpreting solar/battery data

FriendsofMario

Since installing our new AGM batteries two weeks ago, I've been keeping a close eye on the Victron info for both the batteries and the solar controller. Two things puzzle me. I have watched the 'battery minimum voltage' slowly but steadily decrease over the two-week period since install. Here are screenshots of the solar history (shown in reverse order, starting with when the batteries were first put in:

So my first question is: Is this a 'normal' pattern for new lead-acid batteries? Or does the slowly dropping minimum voltage indicate a problem? The battery switch is off, and so the only load that should be connected is the Victron itself.

Next question regards the battery history. I note that the 'total charge cycles' shows zero. I would think that the batteries have been charged each day by the solar controller? That is, every morning the controller moves first to absorption and then to float state. Does that not constitute a charge cycle? Or does there first have to be a certain level of discharge before an 'official' charge cycle is counted? Here is the battery history, and also the battery settings:

I'm sure that these are probably very basic things that I should know by now. But I, too, need things explained to me like I am 5. At least.

And, as a learned man once remarked, "Words, words, words. Just because we hear them doesn’t mean we understand, and just because we think we know what is being said doesn’t mean we have wisdom."