Battery SOC When topped up by Solar

[sunshine_eggo]

I was looking at the custom view on Sunsynk Connect app as below.
Only showing the Battery Voltage, SOC & BMS Voltage.

View attachment 209786
Is there an explanation for the discrepancy between the BMS voltage & the Battery Voltage?

V-bat is likely reported by the inverter, and it's influenced by current. If charging, V-bat will always be higher than BMS. If discharging, V-bat will be lower than BMS. I suspect the difference to the far right is notably smaller with V-bat more commonly below BMS.

When current is 0A, any difference is measurement error, and devices rarely agree perfectly. If you'd like a 3rd opinion, put a voltmeter on the battery terminals and compare to the other two values.