2021’s Best 3500 Watt Inverter Generator Reviews !

A portable power source is something you will find yourself needing either for emergencies or outdoor activities. One of the best portable power sources you can opt for is a 3500 inverter generator.

Inverter generators are lightweight and thus portable. More importantly, these generators can power all kinds of appliances, from power tools to laptops. So which is the best 3500 watt inverter generator?

There are plenty of options on the market, which makes identifying the best challenge. However, armed with the right information, it will be easy to identify a suitable option. That being said, below are our top seven best 3500 watt generator picks.

Our top pick among the six was the Westinghouse WGen3600 Portable Generator, with its impressive 12 hours run time. At a close second was the Generac GP3500iO Open Frame RV Ready Inverter Generator with its 11 hours run time.

However, all the other options on the list are worth considering.

A Quick comparison Of Our top Picks!

Reviews Of The best 3500-watt inverter generator

Generac GP3500iO Open Frame RV Ready Inverter Generator

Generac GP3500iO Open Frame RV Ready Inverter Generator - 3500 Starting Watts with...


The Generac GP3500i0 is one of the more lightweight and portable options in the 3500-watt category. However, it is quite a powerhouse and can power most of your electronic appliances when the need arises.

It has a running wattage of 3000 watts but can peak at 3500 watts. If you need more juice, you can use a parallel cable to link it to a second unit.

When it comes to starting the generator, it is quite easy. And with a fuel capacity of 2.gallons, it should last you for about 11 hours.

You get five different outlets to plug your devices and tools into. There are two DC outlets and 3 AC outlets for delicate electronics. More importantly, this generator is trailer ready thanks to its TT-30R receptacle.



This generator can be used to power a whole host of appliances. It can also be used in RV trailers, making it an ideal option for traveling and camping.

Predator 3500 Watt Super Quiet Inverter Generator


The predator 3500 watt super quiet inverter generator scores high in three important areas, performance, quiet running, and portability. More importantly, it can be used in several settings, including camping, RVing, and outdoor jobs.

As with most other generators on this list, it has a running wattage of 3000 watts and a peak wattage of 3500 watts. But what makes it an exceptional choice for camping is it’s quiet running, with its noise level of 57decibels.

This is one of the most fuel-efficient generators on our list. The 2.6-gallon fuel tank should comfortably provide you with up to 11 hours of run time. Also, you can link it to another for more power using the parallel cable link.

Weighing 100 pounds, this is not the most lightweight generator out there. However, it is still portable thanks to its four wheels. It also has handles making it easy to carry between two persons.



As per our views, this is the most efficient home generator on the list. Its run time of 11 hours is one of the best, especially considering its 2.6-gallon fuel tank.

WEN GN400i RV-Ready 4000-Watt Open Frame Inverter Generator


First, of Wen, generators are among our favorites; why? Well, simply because they deliver the same quality as other pricier models at half the price. Of the many models in the Wen line of inverter generators, the GN400i stands out.

While this is a small generator, it delivers an impressive running wattage of 3500 watts. However, it can get to a peak wattage of 4000 watts. Thus it manages to be portable while being sufficiently powerful at the same time.

With a noise level of 65 decibels, it runs quietly. Its weight weighs 70.5 pounds, which is lightweight compared to others that weigh upwards of 100 pounds. More importantly, it has all the receptacles you need to power your devices and tools.

Where it underperforms slightly is in the run time. With a fuel capacity of 1.85 gallons, it will last you only 7 hours.



With its running wattage of 3500 watts, this is perhaps the best generator for emergency home use. Its 7 hours run time may be a bit too low for activities such as camping. However, for emergency purposes, this is an ideal option.

Champion Power Equipment 100307 4375/3500-Watt Dual Fuel RV Ready Portable Generator


Fuel type versatility is what you get from this Champion power equipment 100307 generators. It can be powered by either gasoline or propane. While its duel feature capability is impressive, it has many other features that make it worth its price tag.

The fuel capacity on this generator stands at 3.4 gallons. This is enough to give you about 9 hours of run time. Not the most impressive run time out there, but it’s still sufficient for most people.

You also get a control panel on this unit. This panel displays all the important settings, such as voltage, frequency, and lifetime hours. When it comes to safety features, it features the standard slue of safety features.

This includes an automatic low oil shut off feature and a volt guard to protect against overloading. While it is compact, it is not the most lightweight, weighing in 104 pounds.



This generator has a lot going for it. For starters, due to its dual-fuel capabilities, it is one of the best generators for RV use. Secondly, it runs quietly with a quiet rating of about 68 decibels.

Westinghouse WGen3600 Portable Generator


The Westinghouse WGen3600 generator is perfect for powering your RV for traveling or camping. It can also be used as a secondary power source when the lights go off in your house.

Included in this generator is a 30 A 120 volts receptacle. You do not need any adapters to plug in your devices, which makes this a great camping option.

Where this generator excels is in its run time. It features a 4-gallon fuel tank, which should last you for up to 12 hours. This is quite impressive when you consider the limited run time of other similarly sized generators.

At 69 decibel, it is not the quietest out there. However, it is still quiet enough that you are unlikely to wake up the neighbors when you switch to it in the middle of the night.



This model is considerably more powerful than others on the list. And its impressive run time is among the best. This generator is ideal for camping and traveling but can also be used as a backup power source in the house.

DuroMax XP4400E 4400 watt 7-Hp RV Grade Gas Generator


The Duromax XP4400E is not the most lightweight generator out there, but it is one of the most powerful. And it comes with a pocket-friendly price tag attached. So what else can you expect from this generator?

Plenty of power is what you can expect. Running at 3500 watts and with a peak output of 4400 watts, this is a powerhouse. It is capable of powering most appliances from lights, refrigerator to your home’s air conditioner.

You can run this generator at either 120v or 240 v. This means you can do more with this unit. Additionally, it is ideal for RVs or camping while being suitable for emergency home use.

The control panel comes with a selection of outlets to connect to different appliances. Its fuel tank has a capacity of 4 gallons and can last you up to 8 hours.



While it is not the most lightweight, it makes up for this with its performance. It is powerful enough to power most appliances. Furthermore, it is versatile and can run on 120v or 240v.

Best 3500-watt inverter generator buying guide

So after reading our reviews of the best 3500-watt inverter generators, you have decided to buy one. So what should you look for when shopping for one? Here are the main things to consider when buying a 3500-watt inverter generator.

Run time

The number one reason to buy an inverter generator is to power your appliances when you do not have access to an electric outlet. That being said, how long a generator can run before requiring refueling matters.

You may think that a generator’s run time depends on how much juice it can hold in its tank, but this is not always the case. Ideally, you want a generator that can offer upwards of 10 hours if you are camping or traveling in an RV.

For Jobsite applications, you can do one with a run time of 6 to 9 hours. Obviously, the more hours a generator can power your appliances, the better.


Inverter generators in this category have a wattage of between 3500 and 4500. The maximum wattage you opt for will depend largely on what you want to use the generator for. Generators with a max wattage of 3500 will typically have a running wattage of 3000 watts.

On the other hand, generators with a max wattage of 4000 watts will have a running wattage of 3500 watts. For camping, tailgating, and RVing, a running wattage of 3000 watts is sufficient. However, for anything that requires the use of power tools, you will need more power.

Most power tools consume a lot of energy and require a running wattage of 3500 or more. 


For emergency home use, portability may not be such a big point of consideration. However, if you plan on using your generator for camping, portability is crucial. Portability is affected by weight and also the availability of handles and wheels.

For any job site applications, a portable generator that will be easy to transport from one job site to another will be crucial.

Parallel cable

Some inverter generators feature a parallel cable that you can use to connect two inverter generators. This is important if you want more power. 

Noise level

The noise level of a generator is measured in decibels; the lower the level, the better. No one wants a generator that is too loud. Ideally, anything beyond 60 decibels is high for an inverter generator.

3500-watt inverter generator uses

  • Home backup in case of a power outage
  • To power tools in a worksite without access to an electricity source
  • Used in RVs to power appliances inside the RV while traveling
  • Used for tailgating to power appliances such as a mini-fridge and tv

Mistakes to avoid when buying an inverter generator

  • Getting caught up in industry jargon and ending up with a generator that is not sufficient for you. Only focus on the main features outlined above.
  • Purchasing a generator from a little known brand. It is best to purchase generators from companies you know and that are well known.
  • Not checking the warranty: Use the warranty as the decisive factor. If you find two generators that match in terms of features and performance, go for the longer warranty.
  • Use the internet to find good deals on generators instead of buying the first generator that comes your way.

Inverter generators vs. conventional generators: The main differences

  • There are several key differences between an inverter generator and a conventional generator, and below are the main ones;
  • Power: Most conventional generators have a power output of up to 10,000 watts; however, inverter generators can only output a maximum of 6000 watts.
  • Noise Level: When it comes to noise level, inverter generators are the better option as they run more quietly than their conventional counterparts
  • Portability: Due to them producing less power, inverter generators have small engines and frames compared to conventional ones. As such, they are more portable.
  • Price: Inverter generators are somewhat of a specialized breed of generators and typically tend to pricier than conventional generators.

Advantages of Having A inverter generators

  • Are power-efficient, and some can run for longer on a small fuel tank.
  • Inverter generators are compact and lightweight, making them easy to transport.
  • Run thanks to their low noise levels quietly
  • Can be used to power a wide array of devices and tools from laptops, smartphones to power tools
  • Typically have a user-friendly interface or control panel.


Inverter generators are not the most powerful, especially 3500-watt generators, but they still have their uses. They are durable, run quietly, and are easy to carry from one point to another. More importantly, they can be used to power a wide array of appliances.

Last update on 2021-07-30 / Affiliate links / Images from Amazon Product Advertising API

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