BELTTT 3000W Pure Sine Wave Inverter 12V DC to 120V AC for RV, Truck, Off-Grid, Home, Solar Car Power Inverter with Dual AC, 20A Socket, 5V 2.1A USB, Hardwire Port, Remote Controller 23Ft Cable

Exceptionally well-built, without the number one cause of failure related to design flaw - using bolted wiring lugs. This one has proper soldered metal tabs that are securely soldered directly to the circuit board for the battery wires, which prevents high resistance in the battery input from developing as the lugs heat up and cool down, expanding and contacting until the internal connections where the wires bolt on the back of the lugs come loose and add massive amounts of resistance. This is what caused the fire that resulted inside my last inverter (you can find my review of that one with photos of the internal wiring that melted and caught fire in my other reviews here).The way the tabs on this inverter are soldered directly to the board instead of using knurled twist connectors like many others do relieves my fear of another fire.The battery cables bolt on with actual bolts to the exposed side of the tabs, and have hard plastic shells that prevent short circuits in the battery cables where they go into the converter housing. This is MUCH safer than the lugs with wires bolted on the inside that then connect to the circuit board.The display that comes on the face of this unit, and the one on the remote switch are clear, easy to read, and not so bright that they'll keep you awake at night. They also have useful information for quick-glance occasional checking of the battery voltage, AC output voltage and a bar graph for current load. They also show either "OK" when the system is functioning normally, and fault codes for errors such as over voltage, overload, and other possible faults. Intuitively, the face of both readouts has fault code explanations right on the panel so you'll never have to go looking through drawers trying to find the owner's manual to know what went wrong if you get an error, and can use the information immediately to correct the fault. This speaks very highly of the design.Installation was very easy, and due to the type of transformers this inverter uses, it's just over half the weight of many comparable inverters. One of the best things about this inverter is that when the red push-button switch on the face of the inverter (and the remote switch if connected) are in the "off" position, there is NO current draw, so you don't get the typical arcing that occurs with many of the inverters in this price range, and don't have to use a resistor when connecting your battery to prevent huge sparks. This is a huge safety bonus for lead acid battery setups as that spark could lead to an explosion if your battery is off-gassing when you make that connection.So far, I'm quite impressed. I tested the system using a 300ah lithium iron phosphate battery to power the inverter, and running a 10,000btu home air conditioner plugged directly into one of the inverter sockets. The inverter didn't even stumble, powering the air conditioner for over an hour. The fans turned on immediately when the load was applied, rather than waiting for the inverter to heat up, which again is safer than units which turn the fans on in response to heat after it occurs. This kept the heat on the outside of the inverter down to only 24f above ambient temperature. The fans are also about as noisy as an electric toothbrush, (and far less irritating).As for longevity, only time will tell. But we're off to a great start so far, and for the reasons already mentioned, I already feel confident that this inverter was designed to perform well, and to last.If anything changes, I'll change my review to reflect the changes. If you're reading this review and it's still showing 5 stars with no updates, it's still performing as stated.

WOW, I’m impressed! It met all specs, 3000 Watts continuous AND 6000 Watts inrush. I did a full evaluation. Beautiful sine wave, not just at idle but also at full load (shown in picture). I tried circular saws, angle grinders, shop vacs and space heaters, right up to 288 DC amps input continuous with 25.38 amps at 119 vac out = 3020 watts!Fans come on when load increases and not overly noisy, less than 50 db @ 1 foot 19.9khz. Fan won’t come on immediately below 500 watts or until it gets hot. At 250 watts the fan may never need to turn on. An electric blanket or T.V. Probably won’t start the fan. The fans being on should be a subtle reminder that you are pulling power and using your battery. More specs; Weight less than TEN POUND! Frequency at idle 59.9 Hz and at full load 59.8 Hz. Idle current 24Watts or 1.8 amps. Indicated DC voltage is actually .050 lower than actual. Use a tie straps to secure the terminal protectors, don’t sandwich the plastic to attach the cable lugs. Provided cables are 50mm2 (equivalent to #1AWG) vinyl jacket makes it look bigger. This should be sufficient for most but it should be noted that it will get hot at sustained full rated load and will account for 1/4 volt loss at the inverter’s terminals when loaded and when the battery is low it could cause a low voltage shut down that little bit earlier. Since the inverter is so good for the price point I won’t take a star away. For a good install and any length of distance longer than cables provided, use 4/0 cables and 400 T class slow blow fuse and BlueSea holder. For LifePO4 batteries you will need; one battery with a high quality BMS rated at least 300 amps OR two batteries, each with 200 amp bms’s in PARALLEL to attain full power potential of this inverter. For lead acid perhaps one large battery (high cranking current) may work but it will be depleted much faster than lithium. Be sure to “pre-charge” before connecting even if it’s turned off. A simple filiment light bulb will work.

Using this in a 2024 Freightliner Cascadia. It's a great price for a pure sine wave inverter, but there's a few caveat's. First, if this is going to be your only AC source when the truck is turned off, then I would look for something more expensive (more efficient). This isn't very efficient, and will draw down your batteries to 12 volts or less simply by being turned on. I ran a CPAP machine which uses less than 20 watts, and my batteries went from 13 volts when I first shut down to 12 volts in the morning, causing the APU to start automatically. The pure sine wave part is nice- no more buzzing noises from my electronics, however I can't trust this unit to be on while the truck is off. Before this, I had a modified square wave Cobra, which I would not recommend- It was however, more efficient, and I could leave it on 24/7 and still wake up with 12.4 volts in my batteries.I'm keeping the Belttt inverter, but I definitely would not recommend getting this if you need to use it while the truck is off.Also the screens are way too bright at night, and there's no way to adjust them.The fans are powerful, and will activate at full speed with any kind of substantial load. You can hear them, but they aren't that annoying. On a scale of 0-5 can opener's, with 0 being the best, and 5 being the most annoying, I would rate this unit at 1 or 2 can openers max. It's tolerable. Build quality seems really good... Input voltage fluctuates rapidly when my truck is running, and output voltage fluctuates between 115 and 123 which is acceptable to me. It's more stable when the truck isn't running, but again, I wouldn't recommend leaving this unit on, even with nothing plugged in.It works for me because I have other options. I run it while I'm driving so i can charge my Anker Solix c1000 batteries