4000W Pure Sine Wave Power Inverters DC 12V to AC 110V 120V with Type-C 4 AC Outlets Dual USB Ports Terminal Blocks LCD Display Wireless Remote Controller for Home RV Solar System Car

Volfvert 4000 watt inverter 24 voltI bought this inverter for use with two Eco-worthy 12 volt, 150 Ah LiFePo4 batteries in series. You do need two batteries for a 24-volt inverter like this, but it will have one fourth the losses on the high current DC side compared to a 12-volt inverter.The Volfvert replaces a 3000 watt WZRELB. The old inverter had no passive cooling, and even a couple hundred watts of load would cause the fans to cycle. The Volfvert has a metal case with cooling fins, and the passive cooling is good enough so that the fan has not started at all. The Volfvert is entirely silent and cool to the touch.I have left it running all day, and have loaded it over 1500 watts for a few minutes, and it works well. The output is a clean sine wave around 121 volts. The output is floating, not referenced to ground, so neutral can be bonded to ground in a breaker panel if you want to attach it directly.The inverter has run everything I have plugged into it including a refrigerator, a microwave, a tea kettle, and even a vacuum cleaner (which is a nasty load due to having a brush motor.)The wattage display on the front may read slightly high. The input voltage is quite accurate. The remote control works well, and so do the USB charging ports.This is a good inverter for backup power or for AC power in an RV or off grid building. It is a step up from some of the cheap inverters that make a lot of noise.This inverter has some big capacitors on the input side. You should not just connect it to a battery without charging the capacitors first, as this will produce a big spark. Instead, put a 120 volt incandescent bulb in series for 10 seconds before closing the circuit to charge the capacitors gently.

The media could not be loaded. I purchased the 4000W pure sine wave inverter for my off-grid setup, and it has exceeded all my expectations. The power output is incredibly stable, and I’ve noticed no interruptions or fluctuations, even when running multiple appliances simultaneously. This inverter can handle high-powered devices like my refrigerator, microwave, and power tools with ease, which is a big advantage for anyone needing dependable power in remote locations.What I appreciate most is its quiet operation—no annoying hums or vibrations, which can be common with lower-quality models. Installation was straightforward, and the user manual was clear and helpful. The build quality feels robust, with sturdy connections that inspire confidence for long-term use. Another highlight is the range of safety features, including overload protection, low-voltage alarms, and cooling fans that kick in only when necessary, making it energy efficient.Overall, this inverter is a powerhouse, and I’m thrilled with the performance. For anyone needing reliable, clean energy for sensitive electronics or heavy-duty appliances, this is a great investment. It’s worth every penny for the peace of mind and seamless power it provides.

The media could not be loaded. This is an awesome inverter for the go! In this setup it is connected to a 220AH 12V LIFEPO4 Battery with a 120A BMS. This means I can run loads up to 2000W concurrent with one of the box you see in the video attached. I like to overdesign my inverters since you can use a second battery in parallel if you want to use the full power. Also the inverter lasts longer if you do not run it at full capacity for a long time. This Box has about 50lb and can be easily taken with you wherever you need serious power. Load it in the truck to a job site or just make repairs on your property with electric tools, or set up a mobile home office. I love the simplicity of the device and the sophistication of the remote... take a break and switch off all devices with a press of a button. Standby is only 0.01 Amps meaning standby for remote control uses only 0.12 Watts, however you can switch it off altogether not using anything. The remote surprised me the most, it worked from clear across the house, so over 200 feet through walls. It is a big box but that is what you get with big attitude :). So far after the first test I love it and with pure sinus AC and delay power on it will protect your electronic devices and others. Best quality for the price hands down, this is an awesome inverter. Would I use it in an off grid system? Sure would, however I would keep the battery and inverter together in a separate area to block out the noise. its a normal fan its not bad but you dont want it all day. Are the cables sufficient, sure are for what I am using it, which is 2000W for a long time and more for a short time. If I had to use it on 3-4kW for a long time would I use a different cable? sure would and an additional battery for that matter. Love the option of the 2 USB ports and a USB-C to charge phones and tablets... If you want to use a single consumer that uses more than 2000W you can connect it directly to the additional 120V connection in the front. The 4 outlets are only 15A or up to 2000W. How often do you need more than 2kW at a time? I don't so perfect setup for me, small enough to carry and powerful enough to do all I need.

I have been using this for almost two years and it has worked well - can start a propane clothes drier with that initial huge current surge as long as the batteries feeding it have decent voltage. My biggest gripe is that the display has faded and is nearly unreadable in all but total darkness and is very difficult to read then. Comes with fairly beefy cables although not quite as beefy as the ones that came with my 2000W Renogy - but Renogy too many $$$

I put this in my big rig to use for a fridge and a air fryer. I used the air fryer once which only pulled about 1700w for 4 mins and the inverter shut off and no longer works.