4000 Watt Pure Sine Wave Power Inverter 24V DC to 110V 120V Converter for Family RV Off Grid Solar System Car with Type-C Ports 4 AC Power Outlets Dual USB Ports LCD Display and Remote ControlCarbonfree Certified

This inverter has been working great so far. We've used it all winter long for a barndominium build. We have 2 100ah hour lifepo4 batteries that we plug into it and they provide more than enough power to the inverter. We've used it in temperatures below freezing (not recommended) and it still worked just fine. Only flaw I noticed is that there aren't any circuit breakers for the outlets. It has fuses instead which would be a pain to replace but I haven't used and don't plan on using anything that could blow a 20amp fuse. I would knock off a star for this but considering the price, I'd say it still deserves five stars. It's already paid for itself considering we use solar to recharge it (well we used to until the electrical inspector told us we need a permit to use solar, which i think isn't true for this small setup but it's based on his discretion. Now we just take the batteries home and charge them with a battery charger)Overall, I would recommend this. It handles my big table saw and miter saw without any problems. The remote is also great. We basically use it in place of a light switch. Very convenient. I plan on putting this in my work truck when we finally get grid power hooked up to the barndominium and install a few 235watt solar panels on top of my truck bed cover.Also, if any of you are intrested in using solar with your setup, I bought used panels and got 6 235watt panels for only $240 and they still have 100% efficiency. Some had an output of up to 250watts on very sunny days. You can save sooo much money on panels getting used ones. Many of them just had small blemishes that don't effect the panels performance. They just aren't able to sell them at as high of a price if they have any flaws. There are a lot of places that sell them used so it shouldn't be hard to find some

Was hoping 5000w would run the AC, but it does not. It works great for everything else.

Very good unit

This inverter has been in use for the better part of a year as the heart of my offgrid solar system. I found I needed to convert from a 12V battery configuration to 24V at short notice very late into my build budget, so this was a compromise to the mid-grade (Renogy) or premium (Victron) pure-sine inverters I might have otherwise gone with in the outset.It's handled everything I've thrown at it, including a 14k BTU heatpump, medium sized fridge, 1600W microwave, 1800W dual hob induction cooktop, lights, fans, pumps, security system, internet, weather station, 2 LCD tvs, stereos and a gamut of chargers ranging from phones and laptops to heavy cordless drill and ebike battery packs.I have a few caveats though... Good for another prospective buyer to know:Number 1: The biggest issue being the output frequency... Despite the very deliberate assurance on the otherwise informatory LCD screen (pictured), it's putting out about 61~62hz.While in most cases, this is not a big deal, it does cause straight AC motors to turn inegligibly faster than they would while plugged into your house's 60hz outlet.It hasn't had any noticeable impact on my fridge, and the heat-pump system (a Midea Duo) doesn't care anyway, since it has its own inverter driver for infinite speed control to its pump.I first noticed the symptoms of this flaw when my trusty old red bedside LCD alarm clock immediately began gaining an entire minute per hour, and just over 25 minutes pretty day) when I upgraded from my previous 3000kw 12v Renogy, which had a stable 60hz output by contrast.I initially assumed the clock had crossed the rainbow bridge (it was a cheapo when new, which was a little over 20 years ago) until I decided to set the clock on my brand new microwave oven, and it ran fast at exactly the same rate. BUSTED! I didn't even need a meter to tell me the freq was just running high.Oh well... It was a small enough disbelief discrepancy that I decided to just run with it as-is, so I bought a USB powered alarm clock to replace it (those have to use an internally synthesized clock-time using its own internal chrystal chip instead of line frequency) and I just keep the microwave clock blank instead of setting it. My meals cook 1 to 5 seconds short depending on how many minutes I input; not a big deal.Number 2: The PRO here is that they provide replacement automotive blade fuses; the CON is that, not only do you have to open up the case to replace them, but they're not even socketed... you have to solder them in. This blew my mind.Hopefully they improve this amateurish design issue in subsequent revisions.Number 3: It comes with a handheld remote to be able to turn it on and off without direct access. It's a nice touch, but you have to buy the battery separately... They won't provide it with the remote.Not a big deal, just a minor gripe. It's not a feature I would personally use anyway, so I'm not concerned... other buyers might care though.Number 4: This isn't an issue for me but it's still something that's good to know before ordering: Manufacturer strongly suggests horizontal mounting of this unit. Depending on where and how you plan to mount it, the built in display may be difficult or awkward to read. Easy to see if it's mounted flat on a shelf of viewable height, but at floor level, or on a wall with the required horizontal orientation (which is how I have mine mounted) it can be awkward.One pro that I feel compelled to mention here: A lot of other buyers have criticized the fan speed on this unit, saying that it's not automatically variable in speed for quietness. Well they're only barely right.... it IS a variable speed fan which comes on when needed and shuts off when not. Spend enough time living with this inverter, and you'll notice the differences in speed, dictated by load/temp.I believe a lot of these people are complaining because they expected the cooling system to be silent, and it most certainly isn't. The sound the fan makes is noticeable, but not any louder than one should expect, so I'm fine with the unit keeping itself comfy while it works tirelessly for me.This inverter will eventually be replaced (by a Victron, most likely) and I'll keep this as a backup.It's been reliably providing me fulltime power with no breaks for the better part of a year, without falter. It even shuts itself down when duty load is exceeded for too long (it beeps a warning, as it permits the temporary draw of >4k-8kw peak, for momentary motor startups and such) and then shuts down..... then after a brief timeout, she starts back up again without me having to do anything, so I have personally never had to replace a fuse inside it (thank God). This has only happened when I stupidly overtaxed it, like turning on the microwave while something is on the stove at full wattage, with my AC kicking at full tilt, which came to around 4600-5000 watts, and I didn't correct myself quickly enough when its warning beeps began. That's operator error, and the inverter handled its business well.This unit has been worth every penny, so I recommend it as a big bang for your buck.

This is truly an engineering marvel. I connected it to my car battery (car running of course) and as a test plugged in an 1800-watt space heater with no problem.The instructions do not discuss the car battery connection which is the trickiest part.I added 7/16 nuts to the battery connection that hold the battery in place and connect the inverter by tightening the inverter wire with the added nuts.that seemed to work fine.

Easy to install and very powerful I'll update in 1 year as to the dependability, and quality. So far I love it, very quiet, the remote works through my bed so I don't even have to lift it to turn it on, it is large but you'd expect that from a 4k watt inverter wouldn't you. It runs my roof top AC on my RV, as well as my space heater, (tested, but in short periods of about twenty minutes) microwave, as well as my TV's and X-box. Make sure you have the battery pack to feed it and you should love it.