Do I Need a BMV for Accurate SoC Monitoring with MultiPlus and CCGX in a 48V Lead-Acid Battery Setup?

Hi Victron community,

I’m using a 3kVA 48V MultiPlus inverter/charger with 8 x 200Ah lead-acid batteries (wired in a 48V configuration). I’m planning to install a Cerbo GX (CCGX) to monitor the system. Since the MultiPlus is currently my only charging source (no solar or other chargers at the moment), can I rely on the MultiPlus data to display the State of Charge (SoC) via the CCGX, or would it be better to add a BMV battery monitor for more accurate SoC readings?

Are there any additional benefits to using a BMV in this setup, and what would be the best approach to ensure accurate monitoring of my lead-acid battery bank?