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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Here is a short video of the Bluetti powering my system. I took a shot of the power usage.

 

If the battery charger is say 500 watts then the batteries will always be fully charged even if you have your low level components on all the time. Nobody has low level components that draw 500 watts......so just keep the charger on and connected to the battery and when you listen then disconnect the charger from the battery. Come on......this is simple! You do not need to turn anything off.....except maybe your power amp/amps.  Who cares how hot the charger is (they typially are switch mode so they run cool)?  As long as it is rated at 500 watts continuous (or whatever)....it should be able to do it all the time.