I used this as the output of a portable power center that I keep in the back of my truck when I am traveling with a camper, so I have shore power even when boondocking (and thus don't need a generator).

The gauge is nice. It at least reads the voltage accurately, though I haven't verified the other readings. On mine, when you first turn it on, it has no draw, but if you put a load on it and then remove that load, it still draws over an amp. For me, this isn't a problem.

It has a decent efficiency, is pure sine wave, and is plenty large enough to run an entire camper. It has off-grid hookups, so I could easily wire up a 30A RV plug for it. The remote is nice since I can leave it in the back of the truck, and still turn it on/off without crawling into the bed. It is one of the most full-featured units on the market, and one of the largest.

The included wires felt laughably inadequate for 4KW (the rest of the power bank is using 4/0 welding/battery wire, and this came with 2 pairs of what looks like either 2 or 4 awg wire) so I upgraded the wiring. It is an expensive unit, and I will probably never come close to 4KW of load, but it is good to know I have the headroom if I get a larger camper in the future.

Installed in a van conversion. Works well for moderate wattage use but i've had limited success getting it to power up 1500W rated AC appliances.

Using 2x 200AH LIPO battery supply.
The wires that come with the unit are good, I think 6gauge.
I replaced them 2 gauge.
My setup is a short run from source to inverter, 20-inches so it's not a supply bottleneck.

I've tested this with a couple of appliances/pumps.

500watt a/c unit. The unit has a max startup surge of 1800W.
I am able to start this AC unit up about 50% of the time. Once it starts I am able to keep it running.

1500W portable AC. Won't start the compressor. This AC has a startup surge 2,000W +-
Never been able to get it running.

1300W water pump. Has a variable start surge of 1800 -2000w
Won't get it going.

Runs small microwave just fine.

Fan will kick in. The internal fan is not silent. Not too loud but you would not want to be sleeping next to it.

It is a decent unit. I still give it a good value but if you plan to use higher wattage appliances that require a substantial startup boost... plan accordingly.

I'm pretty sure a 3,000W unit would run the appliances I tested.

We bought this 2,220 watt inverter to power the "large" loads in our Sprinter camper van: specifically, the Instapot and the hot water heater "“ though not at the same time :)

It was an upgrade to the 1250 watt inverter in our Goal Zero Yeti, which was not powerful enough for any of these loads. (Side note: when the Yeti's inverter eventually failed, we were disappointed to learn that Goal Zero would not provide any customer support for it, nor could they name a 3rd party vendor to repair it. On the bright side, this disappointment prompted us to learn more about electrical engineering and ultimately design and build our own mobile power system, which is tailored to our needs and better value than anything commercially available.)

This is the biggest of four Giandel inverters we installed in our Sprinter's lithium iron phosphate house battery system. It's mounted vertically on a rear wheel well box. We use the 3 smaller Giandel inverters more frequently, but it's great to have this 2,220W inverter for larger loads and redundancy.

When turned on, the idle power draw is about 6 watts. Not bad, but to conserve house battery power, we use the inverter's remote switch to turn it off until we need it.

The built-in solar charge controller is a nice bonus. We use that for a single 100W roof-mounted panel (in addition to a 400W array that's wired to a separate MPPT controller). Note that the inverter's solar charger function works *even when the unit is powered off* "“ so you can charge from the sun, without the 6W idle power draw. That fun fact isn't in the product documentation, but it totally works!

People who need to run larger loads might want to look at 4,000W inverters. Those are pretty big though, so harder to find space for them in a vehicle. So far, this 2,200W inverter has proven to be a great compromise of size and power.

Highly recommend.

Working well to charge my new plug in hybrid. I like the display which shows battery volts and watts going out. The Rav 4 needs 1.4 kw to charge so 3000 watt inverter was good thinking on my part. Would rate a 5 but the manual says not to run solar power at the same time?? And does not recommend LiFePO4 batteries. Guess what I have.

I bought this monster for my big rig because i have a full blown kitchen . I can run my air fryer/oven , microwave, kcup, dorm room size fridge/icer and my 43inch tv with sound bar 2 speakers + subs at the same dam time. At night I run my tv/entertainment center and fridge 10 hours before I need too crank the rig , my voltage drop too 13.5 from 14.1. The remote is nice 👌 when you turn it off there's no vampire leeching on battery, so off mean off off. The one cons I can think of is the cables it comes with lol 😆 ahhh boy o boy.... yea that's a good way too start a fire, don't even think about using them. I bought some welding cable 10 footer -120$ but that expected . My neighbor was broke down waiting for repair so i let him hook up too the monster. He has a 12btu mini split , i turned on my entire kitchen too do a stress test and the monster manhandled the assignment. Ps I have a 2500w inverter before i upgraded for some reason the smaller ones pull more voltage from the battery vs the monster , anywhere from an .5 too 1.0 volt difference . 6mo strong and still running