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 Control

This is an amazing little unit considering the price. I’ve pushed it to 1150 watts continuous and it handled that with no problems. The sine wave is clean and the voltage level holds steady. It does need enough battery to provide 90 or so amps without the input voltage sagging, so don’t hook it up to a small battery and expect it to perform to specs. The fan keeps it cool enough but it is loud. I have no use for the remote so I haven’t bothered with it. I’ve installed it in a van with dual 70ah batteries, and it easily charges my Jackery and the house batteries while I drive. If I keep the load to less than 400w, the fan doesn’t kick on and it’s completely silent. The thumb nuts will loosen over time, so I added a lock washer and that fixed that issue. Also, the cables that came with the unit seemed undersized, so I doubled up on those. I’m very pleased with it so far

This is a nice little inverter. It has a convenient LCD power meter which shows you 12V battery voltage as well as the AC voltage and frequency (Hz) that is being output. I've used it to power my laptop on multiple occasions and the laptop likes the pure sinewave AC power (many electronic device will complain and operate oddly on the cheaper non-sinewave inverters. Very quiet as well.

UPDATE May 2025: Still going strong, knock on wood. I'm using this with a medium sized home solar system with a 200ah lithium battery, an 80-amp controller and 960 watts of solar power. So far it's running great! I can run my Durango window swamp cooler, dishwasher, washing machine, gas dryer, carpet cleaning machine, all my small kitchen electrics, including my 1800-watt countertop air fryer oven, as well as my TV, google home device, surround sound, security system, Aerogarden, small led plant lights, etc., all without a hiccup, but not all at the same time of course. The fan is a little loud but it really only goes on when I run the air fryer. The only problem I've had is that a couple of times I've gotten the over-voltage warning even though neither the inverter nor the controller indicate there actually is an over voltage situation. When that's happened, I just turn the inverter off then immediately turn it back on, and everything is fine, although an inconvenience since some appliances then have to be reset. It's happened maybe three times over the 2 months or so I've had the inverter. It's a bit concerning but hopefully it's nothing to worry about. Another thing is the battery voltage reading is always a few tenths less than what the controller says. So if the controller say 13.3v, the inverter will say 13.1v. Not sure why but I'm not too concerned about it. So, so far I love this thing and compared to other better-known-brand inverters, the price can't be beat. I'm crossing my fingers this thing lasts for years.

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 the 2nd one I have purchased. I used the first for several months this summer with no problems whatsoever. I got a "refurbished" unit the second time to save $40. The unit looked brand new and was probably a unit returned unused. It worked perfectly.

Purchased one about 6 months ago and hasn't let me down, runs great and performs great. I have it direct wired to the block so that I can get the full wattage that it is rated for and I have had it at over 4000 watt draw and works fine. The meter on the front showing the full watts being used at any time is a great feature. I purchased another unit for a back up. I usually have it running every day.

Works well , will be very handy for camping where there are no services .

J'ai acheté ce petit onduleur 500 W. Tension de 120 V à la sortie avec onde sinusoïdale pure. L'écran sur le dessus fourni toutes les informations pertinentes, tension d'entrée, de sortie, puissance, etc ce qui excellent. Le ventilateur ne fonctionne que lorsque la puissance demandée est de plus de 200 W de sorte qu'à faible charge ou à vide, il est très silencieux. Pour terminer, il est équipé d'un démarreur à tension réduite "soft start" de sorte qu'il réduit la puissance demandée lors des démarrages de petits moteurs. Il ne manquerait qu'une protection DDFT pour être complet. Je suis très satisfait.

Inverter is bit noisy when the fan runs, I did not keep it as I have a 1000w which is quieter. It is a good product though.