I am running a 400Ah 48V lithium pack (self-built) and monitoring it using the Multiplus II 5000 internal battery monitor. The system is a grid parallel ESS setup.
It has Daly 250amp BMS (not interfaced with Victon at this stage).
Is there some margin to using a smart-shunt to measure the battery capacity and SoC?
Is it more accurate? If so, why?