How to save on electricity bill just with Marstek venus e 3.0 without smart meters?
Hi everyone!
I just bought Marstek venus e 3.0 a few days ago for my apartment here in Ukraine for outages during winter. But until outages begun or if they will ever be, I thought to use this device to save some money on electricity bill by using battery for my PC, as electricity here during the night is twice cheaper.
But I encountered a problem, that I can't configure Marstek venus e 3.0 to function in that way.
So what I want:
- The marstek is always plugged in the wall by "grid cable".
- My PC is always plugged in to Marstek's "backup" socket.
- When time is 6:00 to 24:00 Marstek outputs from battery to "backup" socket, but not "grid"
- When time is 00:00 to 6:00 Marstek charges and also bypasses to "backup" socket.
In the app, I first configured it to be in "Manual" mode, and set charge timing, charging at specified time was working, but during day time, it was not discharging battery but stayed at "backup" and showed ~275 watt. So I thought that I also need to enable discharge, but I do that, I see that it shows 843 watts at "Battery", 797 at "Grid" and 285 "Backup", which seems to be wrong too much power) and looks like Marstek feeds power back to the grid in to the wall socket, but the problem is that I don't have any smart meters or other devices that can control that, so I might brake something, like my electricity meter or Marstek itself.
So the question is, is it possible to configure my Marstek to function as I want by just using Marstek app? if not, is it possible to do that through API? if not, does Marstek even support such operation mode?
Thanks!