Victron Solar and BMV Settings for factory batteries in 400 2021 BD

Which year TaB400 do you have?  2018 and early 2019 used a single 12VDC AGM battery (many of which have been replaced) and newer TaB400s have a dual 6VDC AGM batteries wired in series, which acts like a big sing 12VDC battery.  Each battery type has its own settings.  The factory solar controller should be set for the factory battery you have.  You can use these settings to initially setup the Victron BMV.  

So you have the dual 224amp 6VDC AGM batteries.  Look on the Victron site, there is a standard suggested AGM profile setting, just change the AmpHr setting to match your batteries.  That is what I did for our single 200 amp AGM, works great.
chees

No, each 6VDC battery is the 224 amp hr rating, in series you add voltage, so two 6 VDC is 12 volts, amps stay the same.  To increase amps, you wire two 12 volt batteries in parallel.  So two 12 VDC batteries at 150 amps each wired in parallel will give you 300 amps at 12 volts.
cheers

I set ours to 40% floor level for minimum discharge level, to give me an additional 20% reserve.  This works well also.
cheers

I found that I needed to set the "Charged Voltage" on the BMV to a value higher than the default 13.2V.  I found that the BMV thought my battery to be fully charged way too soon (when the solar system was still in Bulk Charge mode).  I raised it to 13.6V and the State Of Charge now seems to be behaving better.

You can accomplish the same thing with lowering the tail current can't you?   I just finished a full day of solar charging and my resting battery is at 13.3.  I don't think I've ever see it as high as 13.6 (yet).