On paper it seemed great but it had all of these gotchas that were not documented which meant I was not able to use it for the intended purpose:
-It is advertised as 6kW but that is false. It can only do that when off the grid. Meaning if it is plugged into AC and working as a UPS it can only supply half of that. So you only have 20A at 120V you can use 24/7 through this unit.
-When not charging it cannot pass through or supply 6kW even for a short duration.
-This unit trips 'n GFCI outlet, you have to have an unprotected outlet it seems (which I do not have near where I wanted this).
-It is very very iffy with which solar panels it would work, and there is no documentation on it, it lists it's capabilities as 11-15V and 15V plus at different amperages. Whatever they expect, this unit does not charge from the same configuration panels I had already up that worked just fine with two different brands. I did not enjoy having to reconfigure the panels.
Also when put side-by side with same number of panels as a competitor it was charging with fewer watts...

Final deathnail... DO NOT USE THIS IN FRONT OF AN AV RECEIVER. Whatever anker puts out as AC 120V makes every one of 3 different brand AV receivers I used cause a loud hum on the powersupply of the receiver. I am guessing something to do with what they produce as a sine waive at 60Hz is not really that.

I do honestly regret this purchase, but since it was so heavy I cannot bear thinking about returning it. It will by my last anker home UPS battery.

I have been wanting an All House Emergency Power Backup system for a while and finally decided to pull the trigger on an Anker Solix, the F3800 to be exact. Why? #1 it LOOKS awesome. I like and prefer the tall standing design on wheels and think it looks so COOL! #2 it has not only 120v but 240v as well so I can connect it for use as a WHOLE HOME backup solution as I build up the system. I am on WELL water so something that can keep us in water during an emergency is a GOOD thing. #3 price is really pretty good per kWH. I can add more batteries as I build the system and hope to one day have a full solution. I will be testing this all soon but for now I use it as an UPS in my home office and if the power goes out, I can connect my fridge directly to it and my Internet router as well to keep my coms online. Thanks Anker!