Using battery power to go off the City's power grid


I'm using a Bluetti AC200MAX 2,200 watt expandable power station to take my system off the city's power grid.  It runs off a lithium ion phosphate battery with a 4,800 watt pure sine wave inverter. My total system only takes about 450 watts so I have never heard the fan kick on - it is totally silent. The music comes from a completely black background, with a huge soundstage that sounds very natural. I know that Ric Schultz has talked about these types of setups and there is a very expensive Stromtank battery system that is marketed to audiophiles. Anyone else tried this type of setup in their audio system?

Here is a link to a review:

 

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I've personally doubled down on battery/inverter power. I just bought a Shunyata Venom V16 power conditioner and a Giandel 2000W pure sine wave inverter.  All of my digital components will go to this new inverter/conditioner and the analog components will stay withe the Giandel 5000W inverter with the Shunyata Denali V2.  The idea here is to keep all of the dirty digital garbage on its own "dedicated line" and away from the analog components like the amps.  I plan to stay with one battery to power both inverters.  I'm not going to back to wall outlets any time soon. I know too much. 

@zagortenej I think the older Bluetti’s might measure better. Look into the Bluetti EB150 or EB240, imho. You might be surprised how clean it sounds.

Does the combination of the Giandell 5000w inverter with the Bluetti B300 sound feasible?