There are some points within the Hyper App, which could programmed more user friendly. Most of the time I have enough solar power, so I do not care about this. The AC conversion power loss of about 30W is by default.
You can increase your basic home consumption to get a better efficiency.😉.
As you have a fridge and/or a freezer too, your basic 35W home consumption is increased by their use, automatically. So your lowest level of 35W is not for the whole time.
But I can understand this train of thought, about the conversion losses.
You must write a ticket, to bring this request to Zendure. Here are users only "at work".