I'm trying to understand what the shunt is saying by reporting the battery at "Idle 29w". Wouldn't idle necessitate it being 0 watts since a positive number would mean charging, and a negative number would mean discharging?
asked
Understanding idle battery status
There is just some hysteresis on what is considered idle.
I am not sure on the exact number but probably around +50W / -50W or some percentage of battery capacity.
Ok, so would hysteresis also account for the "missing" watts Im seeing? The battery shows -102w, 37 watts on AC, 37w on DC. 28w arent accounted for... Shouldnt DC loads + AC loads = total battery discharge amount?
@Love2Learn
Think efficiency and standby losses on the inverter. That's not reported, but it can be approximated and shown if you enable the DC Power tile. This might jump around a bit because the sample times of each component don't exactly coincide. There's a Widget for it in VRM Advanced, and you can get a good idea of the 'average' missing watts from that.
This assumes a shunt giving an absolute value to and from battery. For systems without the shunt, anything below like ~50W becomes neither-here-nor-there territory with respect to whether the batt is charging or not, so they've just called it Idle.
