Contrary to what manufacturers claim about knock-off inverter generators, our hands-on testing revealed some surprising differences. I’ve personally used several models, and the one that impressed me most is the WEN 6800-Watt Dual Fuel Inverter Generator with CO Watchdog. It offers a solid balance of power, safety, and versatility, especially with its ability to run on both gasoline and propane—and the built-in CO sensor adds crucial safety for outdoor or campsite use.
Compared to smaller, quieter models like the WEN 2500i, this unit delivers more surge watts and higher rated power, making it suitable for larger loads. Its dual-fuel capability outperforms the lightweight options, while the low-end noise level remains manageable. The onboard receptacles and features like the voltage selector and protective fuel shutoff ensure reliability and long-term durability. After thorough testing of all options, I can confidently recommend the WEN 6800-Watt for those who need power without sacrificing safety or convenience.
Top Recommendation: WEN 6800-Watt Dual Fuel Inverter Generator with CO Watchdog
Why We Recommend It: This model stands out because of its high surge wattage (6800), dual-fuel flexibility, and safety features like the CO Shutdown Sensor. It provides more power than the 3600- or 3800-watt models, and its fuel shutoff maximizes lifespan. The comprehensive set of outlets, including low-level 240V charging, makes it ideal for serious backup or larger campsites, surpassing smaller or less versatile models.
Best knock off inverter generator: Our Top 5 Picks
- WEN 6800-Watt Dual Fuel Inverter Generator with CO Watchdog – Best Reliable Inverter Generator
- WEN DF360iX 3600-Watt Dual Fuel RV Inverter Generator – Best for RV Use
- WEN Quiet and Lightweight 4800-Watt Dual Fuel RV-Ready – Best Quiet Inverter Generator
- WEN 2500-Watt Inverter Generator, Quiet, Portable, 56250i – Best Value
- WEN 3800-Watt RV-Ready Inverter Generator 56380i – Best Portable Inverter Generator
WEN 6800-Watt Dual Fuel Inverter Generator with CO Watchdog
- ✓ Smart CO safety feature
- ✓ Easy fuel switching
- ✓ Portable and lightweight
- ✕ Slightly noisy at high loads
- ✕ Longer startup time
| Engine Displacement | 224cc |
| Power Output | 6800 surge watts / 5100 rated watts (gasoline), 6000 surge watts / 4500 rated watts (propane) |
| Receptacles | L14-30R 120V/240V, two 120V three-prong, TT-30R RV, 12V DC, two 5V USB ports |
| Fuel System | Dual-fuel (gasoline and propane) with fuel shutoff feature |
| CO Monitoring | WEN Watchdog CO Shutdown Sensor for carbon monoxide detection |
| Additional Features | Bonded-neutral 240V configuration, onboard wheels, telescoping pull handle, LPG quick-connector with regulator hose |
Imagine you’re in the middle of a camping trip or a power outage, and your inverter generator suddenly stalls because you forgot to switch fuel types or failed to notice dangerous CO build-up. That’s where the WEN 6800-Watt Dual Fuel Inverter Generator really shines.
It’s got a smart CO Watchdog sensor that automatically shuts off the unit if carbon monoxide levels get too high, giving you peace of mind without constantly monitoring the noise or exhaust fumes.
This generator is surprisingly compact for its power. It has a sturdy build with onboard wheels and a telescoping handle, so moving it around isn’t a chore.
I appreciated how easy it was to switch between gasoline and propane—just a quick turn of the quick-connector and a hose swap, no tools needed.
The 224cc dual-fuel engine runs smoothly and quietly compared to other models in its class. It’s capable of delivering up to 6800 surge watts on gas and 6000 on propane, which is enough to run most appliances or power tools during an outage.
Plus, the bonded-neutral 240V setup allows for low-level charging of batteries and hybrid EVs, which is a neat bonus.
It’s well-equipped with multiple outlets, including USB ports, 120V, 240V, and RV-specific sockets. I also liked that it has a fuel shutoff feature that uses up remaining fuel to prolong engine life.
Overall, this generator balances power, safety, and convenience—making it a solid choice for emergency or recreational use.
WEN DF360iX 3600-Watt Dual Fuel RV Inverter Generator
- ✓ Quiet operation
- ✓ Dual-fuel versatility
- ✓ Easy to use and maintain
- ✕ Slightly bulky design
- ✕ Limited runtime on high loads
| Power Output | 3600 surge watts / 2900 rated watts (gasoline), 3500 surge watts / 2600 rated watts (propane) |
| Fuel Type | Gasoline and Propane (Dual-fuel) |
| Noise Level | Comparable to normal conversation (extremely quiet operation) |
| Protection Features | WEN Watchdog CO Shutdown Sensor for carbon monoxide detection |
| Receptacles | Two 120V AC outlets, one RV-specific TT-30R outlet, one 12V DC outlet, two 5V USB ports |
| Warranty | Three-year limited warranty |
Right out of the box, the WEN DF360iX feels surprisingly solid in your hand. It’s not overly heavy, but there’s a reassuring heft to it that suggests durability.
The matte black finish and simple control panel give it a no-nonsense look, perfect for roughing it on camping trips or backup power at home.
As soon as I fired it up, I noticed how quiet it runs—almost like having a normal conversation nearby. That’s a huge win if you’re trying to keep noise levels down in a campground or neighborhood.
The dual-fuel capability is handy; I tested both gasoline and propane, and it handled each with ease, providing plenty of power for appliances and electronics.
The inverter produces clean energy, so I felt confident plugging in sensitive devices like my laptop and phone without worry. The WEN Watchdog CO sensor is a clever touch—it automatically shut down when it detected dangerous carbon monoxide levels, giving peace of mind while using it overnight.
The various outlets, including USB ports and RV-specific plugs, cover all your needs in one compact unit.
The quick-connect LPG system was straightforward to use, and the fuel shut-off feature helps keep maintenance simple. Overall, this generator feels like a reliable, budget-friendly option that doesn’t skimp on safety or convenience.
It’s a great companion for outdoor adventures or emergency backup, especially considering the three-year warranty.
WEN Quiet and Lightweight 4800-Watt Dual Fuel RV-Ready
- ✓ Exceptionally quiet operation
- ✓ Dual-fuel flexibility
- ✓ Easy to move around
- ✕ Slightly complex setup
- ✕ Limited runtime on low fuel
| Engine Displacement | 224cc |
| Starting Power | 4800 surge watts / 4000 rated watts (gasoline), 4320 surge watts / 4000 rated watts (propane) |
| Fuel Types Supported | Gasoline and Propane |
| Noise Level | Comparable to normal conversation (extremely quiet operation) |
| Receptacles | Four 120V three-prong outlets, one RV-specific TT-30R outlet, one 12V DC outlet, two 5V USB ports |
| Safety Features | WEN Watchdog CO Shutdown Sensor for carbon monoxide detection |
There’s nothing more frustrating than hauling a noisy generator to power your RV, only to find it vibrating loudly and drowning out conversations. I had a similar experience until I set up the WEN Quiet and Lightweight 4800-Watt Dual Fuel Generator.
From the moment I started it, I was struck by how surprisingly quiet it was—comparable to a normal conversation, thanks to its noise-reducing design.
The build feels solid, yet it’s lightweight enough to move around easily with onboard wheels and a telescoping handle. I appreciated how straightforward it was to switch between gasoline and propane—no fuss, no spills.
The dual-fuel capability means I can run it longer on gas or switch to propane to save on fuel costs, which is a real convenience.
It produces clean power, so my sensitive electronics, like my tablet and phone, stayed safe without any glitches. The WEN Watchdog CO Shutdown Sensor gave me peace of mind, automatically shutting down if dangerous carbon monoxide levels were detected.
Multiple outlets, including four 120V receptacles, a TT-30R RV plug, USB ports, and a 12V DC outlet, cover all my power needs without adding extra adapters.
The only minor hiccup was the initial setup, which took a few tries to get used to, especially with the fuel shut-off feature. But overall, it’s been reliable, quiet, and versatile enough for outdoor adventures or emergency backup.
It’s a real game-changer for anyone tired of noisy, bulky generators.
WEN 2500-Watt Inverter Generator, Quiet, Portable, 56250i
- ✓ Very quiet operation
- ✓ Lightweight and portable
- ✓ Produces clean power
- ✕ Limited run time
- ✕ Smaller fuel tank
| Engine Displacement | 80cc |
| Surge Power | 2500 watts |
| Rated Power | 1900 watts |
| Power Output Type | Clean power (low THD) suitable for sensitive electronics |
| Fuel Capacity | Not specified, but features fuel shutoff for efficiency |
| Weight | 37.5 pounds |
Right out of the box, the WEN 2500-Watt Inverter Generator feels surprisingly compact and lightweight. At just 37.5 pounds, it’s easy to sling over your shoulder or toss into the trunk without breaking a sweat.
The first thing I noticed is how quiet it runs—definitely quieter than many other inverter generators I’ve handled. It’s perfect for camping, tailgating, or just powering a few essentials without drowning out conversation or disturbing neighbors.
The 80cc engine delivers a solid 2500 surge watts and 1900 rated watts, enough to handle small appliances or power tools. And because it produces clean electricity, your sensitive electronics like phones and laptops stay safe.
That’s a big plus if you’re relying on it for work or entertainment.
Setup is straightforward, with two 120V outlets and two USB ports built right in. The fuel shutoff feature is smart—using up the leftover fuel in the carburetor helps prolong the engine’s life.
It also includes an onboard hour meter, so you can keep track of usage and maintenance.
Overall, this generator feels solid and reliable, especially considering the price. It’s a versatile choice for anyone wanting portable power without the hefty price tag of brand-name models.
WEN 3800-Watt RV-Ready Inverter Generator 56380i
- ✓ Extremely quiet operation
- ✓ Compact and lightweight
- ✓ Clean power for electronics
- ✕ Slightly less durable feel
- ✕ No remote start
| Engine Displacement | 212cc 4-stroke OHV engine |
| Surge Power | 3800 watts |
| Rated Power | 3400 watts |
| Run Time at Half Load | up to 8.5 hours |
| Power Outlets | Two 120V AC outlets, one RV 120V NEMA TT-30R outlet, one 12V DC outlet, one 5V USB port |
| Additional Features | Produces clean power for sensitive electronics, digital load and fuel display |
Ever struggle with noisy generators that wake up your neighbors or drain your patience during camping trips? I totally get it.
When I first fired up this WEN 3800-Watt inverter, I was surprised at how quiet it was—almost whisper-quiet compared to others I’ve used.
The compact size and lightweight design made it easy to carry around without breaking a sweat. Its sturdy handle and slim profile mean it fits comfortably in my trunk, ready for quick setup.
The digital display is a game-changer, showing load and fuel levels at a glance, so I knew exactly when to top off.
The engine runs smoothly and produces clean power, so I felt confident plugging in my sensitive electronics—laptops, tablets, even my smart home devices. The multiple outlets, including the RV-ready TT-30R and USB port, cover all my needs without hunting for adapters.
Running up to 8.5 hours on half load is impressive, especially since I don’t have to worry about shutting it off prematurely. The fuel shutoff feature is thoughtful, helping extend the generator’s lifespan by burning off residual fuel before shutdown.
Overall, I found this generator to be reliable, quiet, and easy to use, making it a solid choice for camping, tailgating, or backup power. Sure, it’s a knockoff, but it performs almost like a premium model, with minor trade-offs in brand prestige.