Thank you, everyone, for your responses.
I have prepared graphs showing the voltage and load conditions at the time the “Low battery” alarm was triggered. Please take a look.
When checking the Battery Voltage and Current, the voltage remained stable until 15:00. However, after 15:00, the voltage dropped sharply, and the inverter stopped when it fell below 20V.
At this time, the battery’s state of charge (SOC) was maintained at over 90%.
In addition, AC Output Power and Battery Power showed significant changes during this period, but the variation was limited to around 150W.
I also checked the values set in VE Configure. The Battery Capacity was set to 480Ah, which is half the capacity of the 960Ah battery we are using. Could this discrepancy be a factor affecting accurate measurement?
Furthermore, the shutdown voltage was set to 18.6V. Our battery’s nominal voltage is 12.8V, and the maximum charge voltage is 14.6V. Should we consider the possibility that there is a mismatch between the specifications of the battery and the inverter? Normally, for the Multiplus 24/3000/70, it would be appropriate to use a 24V battery to ensure proper recognition.
What are your thoughts on this?