The only thing I know for sure is that it's not cheap, and even with the price of LFP cells going down to U$50-60 per Kwh, they continued to charge 10-20x that per Kwh. All brands are the same.

a text which is basically a re-write of their marketing pitch. Oh, by the way, 'affordable', so how much is it exactly? Nah, that's not important, next!

I did not find any information about the noise.
And it should be, because there should be some kind of inverter.
+ How about heating? Is it safe to put batteries behind the fridge [where it's hot]?!
And who even thought of placing lithium under the bed?

Again, someone wants to scam naive people?