If you want battery communications with the Victron Gear, you will need a BMS that can work with the Victron protocols. I do not have a lot of experience trying to do DIY battery coms with Victron, but if you review Andy from the Off-Grid-Garage channel he has done a lot of integration with Victron and his large DIY bank of batteries.
https://www.youtube.com/@OffGridGarageAustralia
What battery voltage are you planning? 12V is convenient for a mobile system bu it might be difficult to scale very far.
i'll stick to 12V for this project, so 600ah is as large as I want to go. The larger project is for my data center and i'll do 48V for that one. but doing this as a proof of concept and to get a solid understanding of all of this.
For my RV, I have shore power, but my goal is to run it entirely off of solar/battery unless we need to run AC, I was fairly successful with this and my 210ah I have now with my Lion batteries, but I always ran short over night, or with the cloud etc. I calculated that 400ah would be more than enough but looking for reserves, so thats where the 600ah comes from. When I camp off grid, for the most part 300ah would get me through a day, and Id rarely hit 400, I have 1300watts of solar so during the day I should be able to charge up and be good...unless it's hot out, but even then I was able to max out solar and let my gen basically idle while we ran the AC.
For the data center, I have 3 phase 100 amp, so id like to basically run each phase on a 15000watt inverter, to a battery bank. Currently we run alot of UPS's, and the equipment still sees a flash when we go onto UPS power. This way they would never see anything but perfect clean power, as the battery charger would simply turn off until the generator kicks in. I would eventually like to tie in some solar so it would get easier to run as much off solar and less off grid as possible...You can probably see where im going with this.
It will also be nice to get rid of all the lead acid in my UPS's that I have now.
