Balcony power plant Battery to use as an UPS

I’m on the Hunt for an UPS for my home-lab since a while, i now came across devices like the Anker Solix 3 & FoxESS Avocado 22 which are not really advertised as such but seems like to work for what i intend to do.

From my research it should be possible to set the min SOC% and via modbus and the battery will charge from Grid.
Connect my Rack to the 1200W EPS Socket and have power even if there is no power from Grid but normally it should get power from the grid with the AC bypass

Any thoughts on that? Anyone did some something like it?

I bought an FoxESS Avocado 22 Orbit:

  • Storage capacity: 2.1 kWh (modularly expandable up to 10.55 kWh)
  • Module connections: 4 × solar module inputs with MPPT (up to 3.8 kWp PV input)
  • 1,200 / 800 W bidirectional inverter: grid charging & feed-in
  • 1,200 W emergency power supply via integrated socket/outlet
  • EPS switchover < 10 ms: ensures uninterrupted operation
  • Battery-friendly operation thanks to AC bypass
  • High usable capacity with 90% DoD (Depth of Discharge)
  • Compatible with energy trackers: Shelly Pro 3EM (for zero feed-in) & more
  • Warranty: 10 years from the manufacturer
  • AC connection cable: 5 meters

Is there any Home Assistant question in here?
Looks like an ad for a particular hardware item. It doesn’t even appear to be smart?

The question is if someone has done something like this, not just with the product i mention but in general, also i said devices like. Anker, FoxEss (solax,Marstek, etc. ect)
Instead of buying a APC or Cyberpower UPS

The FoxEss one was the one i got for a good price and wanna test and report here how it’s going, still in transit :smiley:

It can be integrated to home assistant via Modbus but i guess also a cloud integration, but i want to have everything local only.

About the not smart:

So i guess there is no so much interest in this topic.

Here is a link to a pdf where i looked up some info on what Battery to use: (its more a generall info and not if you can integrate it into homeassistant)

It works perfekt for my intention. I ordered an Modbus to TCP converter but i noticed that i don’t even need it for the Avocado Orbit. It exposes modbus via TCP/IP allready and used the Solakon ONE integration:

So this is how it looks for me now:


Works for my homelab Setup! I have an UPS that can power my Homelab for quite a bit before i have to take actions.