Stromtank independent power source

[Gerlach]

So over the weekend I spotted something on a post while doing my regular Instagram browsing. I have seen Stromtank brand but never the inside how it works. Nope, this isn't your normal power filter story. To my findings, they running a Studer Xtender low Frequency inverter in the unit https://www.studer-innotec.com/en/products/xtender-series/ with Lithium/Lifepo4 batteries with a BMS setup and add-on stuff. This will supply the audio system with power while it's connected to the grid.

Here is a link to there site.  https://stromtank.com/technology/