question

I don't agree with all of what JohnC said, but the general message to tune and play with the settings is absolutely correct.

My strategy was to discharge my batteries to as close to 50% discharged as possible. The consumed Ah reading is helpful when doing this, but the resting battery voltage being what it should be at 50% is what's important, as the Ah rating of a battery varies throughout its life. For me, I was shooting for around 12.2 - 12.25 volts. Resting means no load for a half hour. When you get them at 50%, play with your Peukert till the capacity on the BMV reads 50%. The temp compensation matters here too, but it would be hard to dial it in like this. My battery's manual showed % of full capacity at different temperatures. But the BMV setting wants change in % capacity per degree of temperature change. You'll have to do some math to make the conversion.

To make the increase in capacity correct as the battery is being charged, you need to play with the charge efficiency. Hint: the default 95% is bs. It's not that high. This one takes some tinkering through multiple discharge and charges.

To make the bmv reset at a reasonable point, set the charged V to just below the voltage where the charger goes from absorption to float. I set mine to 12.5v. Also set your float % (% of battery capacity) to just above what your charger is set to. This might be difficult because you probably have two chargers: solar and AC. One will have a lower float. Find out in the settings or by watching it as it switches from absorption to float. Set your bmv float to just above this.