Bluetti EP900 to Power your House

Haven’t run accross any tests on this yet, but given the Bluetti marketing proclivity of over simplifying what it takes and how much energy it takes to power a house I have some doubts.
Notice a lack of any cables visible on the marketing propaganda video or pics.
And lol on their customer service claim.


Edit: heres a review but not a test, apparently it has internal heaters - down to 4F.

Good, bad or indifferent ... Here's another

Watched that off-grid video. Seems easy to setup and interesting.

Yea, super easy. The website says it supports existing solar systems. Curious if it does frequency shifting to shut off a solaredge inverter.

Nice that Bluetti finally came up with a battery cable system between it’s batteries that isn’t a giant bulky obtrusive cable sticking a foot out. Well done.

Though I’m generally not for proprietary connectors.

And I can’t believe he has a 6000w garage heater!

allprogenerators.com said:

The one thing nice about this EP900 is they sell an enclosure and it can be kept outdoors. That's a feature that is unique to Bluetti so far on the all of the All in one units.

It is only for the Bluetti EP900 and Ep800

Click to expand...

Really.
Good luck with it outside enclosure or not.
Sunshine on it, it’ll get hot.
110-118f las vegas or CA desert temps, good luck. 160f was measured on pavement there last summer. And while only a moron would install something like these units on pavement, I’m sure some installs will create operating challenges for such devices.
Sub freezing temps, good luck.
It may have temperature protections, or even internal heat, but if you need to use it in real heat, or real cold for a string of near solar-less winter days I wouldn’t count on it if it’s installed outside.
Imho, Bluetti marketing is quite unrealistic.
I wonder what the units consume themselves.

All that said, I’d love to have one, (or four). ?

I just watched a handful of the videos on the EP900 and EP800. From what I understand:

1. I can have my 9kw enphase array feeding AC into this unit AND also have 9kw of DC from two more arrays feeding into this unit together at the same time?
2. When the grid is up, both of the solar inputs (one from my enphase system, and one from the EP900) can feed back to the grid?
3. If the grid goes down, my AC coupled solar (coming in from Enphase microinverters), will NOT remain up and go offline, correct? The solar input into the EP900 will still function, but only powering critical loads? How does this unit/config prevent power going into the grid from the EP900?

Thanks in advance for those that know a lot more than me

Update: I asked Bluetti support the following:

Question:
"Can the EP900 keep my Enphase solar system running off-grid? Do you have any systems that do this (or will you)? This is one feature that Powerwall, FranklinWH, etc., advertise as a big positive with their systems."

Answer:
"Yes, the EP900 can now keep Enphase solar system running off-grid, and Enphase Solar PV prioritizes powering home loads, and the surplus power of solar PV charges the batteries of EP900. Bluetti EP900 can now support Enphase microinverters like the IQ7 and IQ8."

My two remaining questions:

1) Regarding ease of installation: They talk about it being almost DIY, but I'm not sure if most electricians would be able to figure out how to configure the EP900 to play nice with an Enphase system during a grid-down situation and keep the power coming in from the grid-tied microinverters.

2) How exactly does the EP900 feed power back to the grid safely when the grid is up, but automatically disconnect from the grid and keep the Enphase system running? I don't see how this is done (in the manual or in the image below).

Here's the basic config from Bluetti for an existing AC coupled system: