I have an apex300, 1xB300k and 2xB300. Charged using grid and providing 85w or so of power for networking equipment. SOC is kept at 80% using self consumption mode. When I look at energy use, I noticed the Apex300 consumes 4.6kwh from the grid each day to supply 2.1kwh of energy. The grid consumption is accurate based on my emporia monitor. Where did the extra energy go? Is it this inefficient? Are my settings wrong or is there something wrong with my unit?
The Apex 300 is a high-power unit and you’re only taking 85 watt from the inverter. Just running the inverter and the unit itself consumes quite some power and that’s the efficiency loss you’re experiencing. Your unit is working as designed. If you use for example, 1500 watts you will see that your unit will become a ton more efficient.
If your networking equipment can take the DC output from the Apex 300 then you can turn off the inverter and then the unit will be more efficient at lower wattages.
My AC300 setup has the same inefficiency at lower wattages. It’s the drawback of big inverters. Perhaps they should make a dual inverter unit once. A small and efficient one for low wattage use and a big one for the heavy work.