WZRELB 7000W Pure Sine Wave Inverter, 24V DC to 120V 240V AC, 4 AC Outlets, Hardwire Terminal, 91.6% Efficiency

I purchased the 800W version of this (They make many sizes). I intend to use it to backup my furnace during the winter if a power shortage should occur. I have a Backup sump pump with a marine battery with an estimated 135 amp hours. The sump pump backup system keeps this battery fully charged all the time. My furnace draw about 280 watts once it starts. The inverter can deliver 800 watts constant and handle a surge of 1600 watts. It should be able to run my furnace for about 4- 5 hours continuous, but my furnace typically only runs about 40% of the time so most likely it should keep me going for about one day on my battery This unit is great because if my battery supply drops below a certain voltage the unit shuts down so It would produce a low voltage output. I have not yet had the need to run it So I won't know if it works as planned until the power goes out. I will update if that happens.The unit delivers a solid 120.0 volt output which i verified with a "Killawatt" power monitor and a voltmeter. The unit appears to be well made, and has a rugged metal case that can be safely mounted if need be.

Excellent product, works great…..,

Update (3/27/21): After less than 24 hours, this is now broken. With a 115W load, measured with an energy meter at the output, the unit will shutdown, and the AC voltage goes out (the DC voltage is still illuminated), the RED fault light is not illuminated. Sending this back as defective. Opened to inspect for damage, and found some black specks near a resistor, and some odd marks on the top edge of the largest black capacitor. Not certain either is the cause of failure, but very much indicative of poor manufacturing processes and lack of quality control inspections. Also added a short video of the fan running, pretty loud.Summary: This is a 24 volt inverter, 300 watt. Previously reviewed the 6000W model from the same company. I also have a 2000W inverter, but the overnight power draw to supply a small 15W (120VAC) was quickly draining my solar/PV battery bank. I ordered this 300W to use instead.Observations: First issue right out of the box is that the DC voltage does not display correctly. The display should be "26.0"; however, the upper-right LED bar is broken. Second issue is that in the bag of washers, one of the six was rusted. Third and final issue is the DC power cables. For DC power cables, having a good connection is important for efficiency and safety. Doing a pull test on the RED/BLACK cables revealed that the power cables are crimped poorly, and not soldered, which results in the terminal lug pulling right off (same issue with the cables from the 6000W unit).Recommendations: Check the DC power cables for loose crimping on the lugs. Solder them for extra assurance.Pros: None.Cons: As listed above.Conclusion: At $62, rating this 1-star, and not recommended based on numerous quality issues, especially the broken display.Related Products:WZRELB 6000W 24V 120V Pure Sine Wave Power Inverter with 4 AC Outlets Wired Remote Control (RBH-S600024WR) ~ $1000https://www.amazon.com/gp/product/B08216ZMHW

This is a great little inverter that does exactly what it promises. It produces clean, pure sine wave power and has been rock-solid in performance for my off-grid setup. I’ve used it to run sensitive electronics and small appliances without any issues at all. The build quality feels solid, and the fan only kicks on when needed, which is a nice bonus for quiet operation.The only thing to note—and this isn’t a dealbreaker—is that the rated 1200W is divided across both AC outlets. So if you’re running a single high-wattage device, keep that in mind. Still, for typical use, this inverter delivers great value and dependable performance. Highly recommended!

I've had this inverter for 5 months now. I run a fridge and freezer off of it in my garage with 4, 250W solar panels and a large battery bank wired in series for 24V.This inverter puts out TOO high voltage. At 1st it put out 130V all the time. I wrote to the seller and he sent me instructions for lowering the voltage. I could only turn it down to 126V.AS far as being able to run 3,000W with 6,000W surge.....(UPDATE.....This is incorrect info) it will barely run a consistent 1,000W. I have a watt meter inline with the output of the inverter. As soon as any other load is put on it, the inverter shuts down and must be reset. I can't even turn on a 100w light bulb if the watt meter is displaying 1,000W. (Update.... out of ignorance, I was only using one of the 4-outlets which caused shut-down when that one outlet was over-loaded.)EDIT 7/27/2018I have had this inverter for 18 months now. It still puts out 126V and I am not having any issues with my fridge or freezer. I was originally concerned that the high voltage might shorten the life of the compressors. However, I am now in the school of thought that it may add life to the compressors because the higher voltage helps the compressor start easier, thereby relieving some stress. Remains to be seen.I just upgraded my to 3 stars. I would have made it 4 stars but the 126V is higher than this product should produce.EDIT 6/10/2019I've been using this inverter for over 2-years now. Still going strong but still output of 126V. My fridges are still doing just fine. In fact, I think that the higher voltage makes it easier for the fridges compressors to start upon recycling.EDIT 7/18/2022I have finally raised my rating to 5-stars. It took me some time to realize that the 110V outlets in the inverter are EACH rated @ 15A........ The only way to get full 3000W performance is to either use several of the supplied outlets or hard wire it using the supplied connections. I've been running this inverter 24/7 for 5-years now and it is still going. I still have the same fridges and they seem to have no ill effects from the 126-130V.I have now had this inverter for 6-years and it runs 24/7 powering our refrigerators.The last few days it has periodically been shutting down for no apparent reason. All connections are tight and I am running it off of 280AH, 24V LiFeP04 (lithium) battery which is fully charged by 1500W solar array and battery is at a pretty constant 26.5V - 27.5V. Everything is functioning properly and I'm thinking that it may just be time to replace it. The inverter shuts down @ 27.1V.I am wondering if they have made any improvements since 2017 to stabilize the power output down to 120V output and shut down @ 30V, where it should be.EDIT 9/2023I replaced this inverter with the newer model of the same inverter. This inverter NEVER did fail. It still functions as it did when new (as stated above). I find the new model to be more stable with output and it doesn't shut down at 27.1V like this one does. See the review on the newer model.