My current configuration is a eg4 18kpv with 6 eg4-ll batteries. I’m connected to the grid. I plan to add pv but at present the system is my backup when the grid fails. I’m in the Allegheny national forest so power outages are a regular occurrence.
since I installed the system I’ve had 2 times where during a grid outage the soc drops and the batteries are unavailable. I was not there both times, but when I drive there I find the batteries showing 0 soc and once I cycle the bms breakers the inverter begins to charge the batteries. The grid consumption is 30kw+ house usage. So the batteries were drained. The data history doesn’t show anywhere near 30kw of consumption from the batteries for the months prior to each event. And there is charging activity seen in the data.
normal grid consumption when I’m not at the cabin is less than 1kw per day.
I probably have something incorrect in my settings but where does 30kw go? No evidence that it was mistakenly sent to the grid or to ground. No sign of arcing, melting wires, heat damage.
when I shut the grid breaker in testing the sub panel remains energized and the circuits all function properly.
