The 5 Best Portable Inverter Generators [2020 Reviews]

Today you can buy portable generators with built in inverters and plugs with American outlets, European outlets even generic USB charging docks.

It’s never been easier to get outside and have reliable power for just about any accessory or appliance you can think of.

We’re going to talk about the differences between some of these common electronic power banks and power inverters so you know what you’re buying. I’m also going to help you navigate a few top rated inverter generators.

Best Portable Inverter Generators

 Honda EU2200i Portable GeneratorChampion Inverter GeneratorYamaha EF2400 Portable Generator
editors choice
Honda Portable Inverter Generator
Power:2200 Watts2,800 Watts2,000 Watts
Run Time:4.0 - 9.6 Hrs8 Hrs8.6 Hrs
Noise Level:48-57 dB58 dB51.5 dB

For more of my top gear recommendations, have a look through these popular Outside Pursuits guide links: Family Camping Tents, Truck Bed Tents, Pop Up Canopies.

Quick Answer: The 5 Best Rated Inverter Generators For 2020

  1. Honda EU2200i Portable Inverter Generator
  2. Champion RV Ready Portable Inverter Generator
  3. Yamaha EF2000iSv2 Gas Powered Portable Inverter
  4. Westinghouse iGen2200 Portable Inverter Generator
  5. WEN 56310i CARB Compliant Inverter Generator

Here is a feature comparison of my top portable generators with reviews and our buyers guide below.

Inverter Generator Reviews

Honda Portable Inverter Generator

Honda is a name in engines that has been around for ages and is our Editors Choice for the best inverter generator.

Honda knows how to make a quality gas engine and that’s a good thing when the engine is the main component of an inverter generator.

If you know anything about gas engines, especially small gas engines that don’t get used often, you know it’s hard to keep them running well.

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One way to help this out is to run the generator motor dry at the end of a trip. To do this you need a fuel shutoff valve (or just run the tank dry) which is why I love that feature on this inverter.

Depending on the load on this inverter it will run from 48-57 dB which is mildly annoying to quite loud. You can solve that, however, by hiding it behind the RV or something.

I do like the overall compact size, number of power outlets, and clean styling for this Honda generator.

It won’t be getting your car or truck dirty when you pack it up and the easy to carry handle makes the whole thing easy to transport.

Best For: Light camping and keeping on hand when the need arises for small power.


Honda EU2200i Portable Inverter Generator at a Glance:

  • Run Time: 4.0 to 9.6 Hours
  • Power: 2200 Watts
  • Noise Level: 48-57 dB
  • Other: Can be run in parallel

Champion RV Ready Portable Inverter Generator

This RV ready generator inverter has enough outlets to take care of anything you can throw at it. Plus, at 2,800 running watts it should be able to handle just about anything.

While I don’t love the styling of this generator as much as the Honda, I do like some of the little details. One such detail that really matters is the low oil sensor.

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Because many of us aren’t engine mechanics, a little backup like this is handy so we don’t blow up an engine.

On top of that this Champion generator is capable of cranking out a sustained 2,800 Watts of power. You’ll need all of that if you want to run an entire RV off one generator.

At a moderate load you’ll be lucky to get about 8 hours of use out of a tank of gas.

One thing that I can’t say enough about is the 3-year limited warranty. If something goes wrong it’s nice to have a manufacturer that will stand behind their products.

Best For: RV campers looking for the best portable generator that will provide enough power for almost all of thier needs.


Champion RV Ready Portable Inverter Generator at a Glance:

  • Run Time: 8 Hours
  • Power: 2,800 Watts
  • Noise Level: 58 dB
  • Other: Low oil shutoff sensor

Yamaha, like Honda has had a long history of making engines and engine components. They also happen to have a great product design team that really just knocked the aesthetics out of the park on this one.

Let’s start by addressing the tiny size of this gas powered generator inverter. It’s SO SMALL! I really love how tiny thing thing is because it’s perfect for compact needs.

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Maybe you’re going camping but you’re taking the car and don’t have much room. This is the one for you!

Because of the compact size and low overall output, you’ll not find an RV plug here. This is more for those occasional use times when you need to hook up a battery charger, electric cooking utensils, or other short use needs.

Since it’s so small in output capacity, you’ll be happy to know that it can be run parallel with another unit for more juice!

Best For: Car camping, emergencies and anyone looking for the best tailgating generator!


Yamaha Gas Powered Portable Inverter at a Glance:

  • Run Time: 8.6 Hours @ quarter load
  • Power: 2,000 Watts
  • Noise Level: 51.5 dB @ quarter load
  • Other: Low oil light

This little dude isn’t as compact as the Yamaha but it’s not as big as the Champion either. This is the middle ground between the two with some compact size and a bit of power output.

I know we haven’t talked about it on all the inverters but runtime is important. This one has one of the better run times of 12 hours at 25% load.

The reason it’s hard to compare, however, is that many manufacturers will list run times at various (or undisclosed) loads. That makes it almost impossible to get an apples to apples scenario.

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That said this is hands down the most versatile generator lineup on our list. It’s not the generator itself, but rather the fact that you can get it in 1,200 Watt to 4,5000 Watt models.

There’s a model that’s the right size for everyone in here so take a look.

Did I mention that you can piggyback these small portable generators? Two 4,500 Watts running in parallel means you can get enough juice to run several military grade spotlights and the A/C unit if you want to.

Disclaimer: I don’t actually know if you can run a spotlight off this inverter – it was an exaggeration.

I also love that this inverter has USB plugs directly on it. With the proliferation of USB powered devices this seems like a necessity today.

Best For: Campers/hunters/fishermen who need a portable power inverter of just the right size.


Westinghouse iGen2200 Portable Inverter Generator at a Glance:

  • Run Time: 12 Hours @ quarter load
  • Power: 1,800 Watts (other sizes up to 4,500 Watts)
  • Noise Level: 52 dB
  • Other: CARB Compliant

A couple of our larger inverters are so big they actually are easier to roll than carry. This is one of them and it’s a beast ready to light up your RV, house, or camping trip.

I was going to give this inverter the top pick for RV use until I found out that it doesn’t have an RV plug on it! Luckily that can be saved by using the parallel adapter but still it’s annoying extra step I think.

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I will say, however, that the Champion gives it a run for the money. The WEN pulls slightly ahead, however, because I think the inclusion of little details like 2 USB ports right on the unit make a difference.

If you don’t think you care about USB plugs on the inverter (after all you can just plug them in inside the RV, right?) then go with the Champion model for ease of use.

Best For: Those who want to piggyback two units for max power in a camping setting.


WEN 56310i CARB Compliant Inverter Generator at a Glance:

  • Run Time: 7.5 Hours @ Half load
  • Power: 2,800 Watts
  • Noise Level: 45 dB @ Half load
  • Other: EPA III and CARB Compliant

Portable Power Inverter Comparison Table

Portable Generator PowerRun TimeNoise LevelCurrentRating
Honda EU2200i Portable Generator2200 Watts4.0 - 9.6 Hrs48-57 dB18A4.9 / 5.0
Champion Portable Generator2,800 Watts8 Hrs58 dB25.8A4.3 / 5.0
Yamaha EF2000iSv2 Portable Inverter1,600 Watts10.5 Hrs51.5 dB16.7A4.3 / 5.0
Westinghouse iGen2200 Generator1,800 Watts12 Hrs52 dB20A4.3 / 5.0
WEN 56310i CARB Compliant Generator2,800 Watts7.5 Hrs45 dB30A3.9 / 5.0


How to Choose the Best Inverter Generator for You

Now let’s go over what you need to know about portable inverter generators, that way you’ll be able to spend more time camping and RVing and less time searching around the internet for the info you need.

best inverter generator

How Big of a Inverter Generator Do I Need?

“Big” in terms of inverters and generators really refers to power output measured in watts. In confusing physics terms, (W = AV) or watts equals amps times volts.

Therefore, to truly understand how big of a generator you need all you need to know is the draw and voltage of every device that will be feeding off the inverter.

So, let’s say you have a device that pulls 1.2 amps at 5 volts (common for USB chargers). That device will consume 6 amps of power from your generator. If you wanted to run 100 of those at the same time you’d need at least a 600W inverter.

This number begins to skyrocket as soon as you use larger items. For instance:

  • Charcoal starter – 600W
  • Single Burner Electric Range – 800W
  • String of Lights (Edison Style LED) – 30W

Those are just a few small examples of power draw from some common camping items you might hook up to a generator inverter. Running those at the same time will take 1430W of power output from your inverter.

Fortunately, most modern inverter generators range from about 1,400W to 4,000W of output.

If you go through the process of adding up the devices power consumption that you want to use be sure to add about an extra 25% to the final number. This will account for additional items and parasitic consumption caused by extension cords, etc.

If you’re running your RV off the inverter generator then make sure it has enough juice to power hungry items like the air conditioner. These devices are super power hungry so you may have to only run them occasionally.

Noise Levels

Generator inverters get their power from spinning magnets inside of copper wire coils. It’s basically magic, but it works. At the end of the day what this means to you is that the gas engine being used to power most generators is always noisy to some degree.

The last thing we want (and the people around you want) on a nice quiet camping evening is a loud generator buzzing away. Yuck!

Noise level is measured in dB or decibels. Decibel levels under 75 dB are usually safe for long exposures and, while annoying, won’t hurt anyone. Noise levels above 85 dB are unsafe and can cause long term hearing damage (source).

Most quiet portable generators will run from about 45 (very quiet) to 65 (quite loud). Anything at or under 50 is pretty darn quiet for a gas motor. Anything at or above 60 will probably start to earn you enemies among nearby campers.

Many inverter generators use adaptive output which means the engine runs harder when you’re drawing more power and it quiets down when less power is being used. An inverter with this feature will help appease the neighbors and prevent their dogs from barking at your inverter constantly.

Tip: Hide your inverter on the side of your tent/RV/car that is facing away from your campsite and other people. This will help deflect direct noise from the inverter and lower the overall sound signature.

best home generator
Photo Courtesy of Champion Power Equipment

Number of Outlets on the Inverter Generator

I have no idea what you’ll be using that inverter for when you go out with it. I’m assuming you may want to use it for outdoor living or camping, right?

Well, you’ll have to do a little thought experiment with me. Go back to the last time you went out on a similar camping trip.

  1. How many electronics do you use?
  2. How often were you using them?
  3. How many did you use at the same time?

Most inverters will have a couple of outlets of various types. If you’re only using one or two types of plugs, there’s no sense in going for an inverter with a huge smorgasboard of outlet types. Keep it simple.

Plugging devices right into the inverter is by far the most effective way to do it. Using a power strip or extension cord can be done, but every time you piggyback something off electronic devices they lose power.

Each additional length of cord or outlet plug adds resistance to the circuit which will draw power off the inverter. When you’ve got a limited amount of power output, like an inverter, you want to be as efficient as possible so always try to plug devices directly into the inverter.

Peak Watts vs Running Watts

Be careful with some of this language when shopping. Manufacturers will try to fool you by playing with words when they label these devices.

So, how do you navigate around these tricky labels?

Peak watts will often be cited as the main “number” when you’re buying. If an inverter generator says 3,000 Watts make sure to find out if that’s peak or running watts. If there’s no clear difference look in the specifications.

Peak watts is a label that refers to the maximum possible output of the generator. Generators cannot put out this amount of power all the time, it’s just the maximum theoretical output if everything goes right all at once.

Running watts is a term for the normal sustained output of a generator inverter. That’s the number you really want to be paying attention to. Make sure you don’t get fooled by looking at peak watts when you think you’re reading running watts.

I promise to make sure that each of the inverter generators on our list has the running watts listed clearly.

Running Inverter Generators in Parallel

Sometimes you can use the magic that is electrical engineering to make cool stuff happen. Let’s say you and a friend are going out with your families. You both have a generator that can run parallel. In that case, you can plug those two together and they will boost each other’s output!

Why is this better than just running them separate? It just depends on where your devices are, how high of a load you have, and what you’re using them for. You can piggyback two of them and then plug the RV right into that for a combined max output.

RV Plugs

RV Plugs For Inverter Generators
Champion 3100-Watt RV Ready Portable Inverter Generator

RVs always have those funky plugs that are the size of a small teacup. Fact is, you gotta have an outlet that can accommodate it if you want to power up that RV.

Most inverter generators are made with these outlets, but some are either too small or just don’t have it.

If your generator doesn’t have an RV plug, do not use an adapter unless recommended by the manufacturer. RV plugs should only be plugged into appropriate outlets with safe fuses and circuit or you can damage the inverter, cable, or the RV itself.

That’s an expensive problem!

FAQs For Inverter Generators

honda inverter generator
Honda EB2200I inverter generator

Q: What’s an ECO mode on an inverter?

A: Inverter generators often have some kind of efficiency mode. Usually this is a simple switch that you can turn on to increase efficiency and decrease noise.

Essentially most of these are just bottle necking the output of the generator to reduce fuel consumption and force it to run lower. Sometimes, however, there is much more sophisticated tech behind them.

No matter how these modes function though, they all serve the same purpose. Their job is to either automatically, or manually, detect when lower power needs are present and slow down the inverter to save gas and extend run time.

Q: What is overload protection?

A: No, not “overlord” protection – that’s a totally different thing.

Overload protection is a smart circuitry feature which knows when the generator is being overdrawn and responds by either shutting things down, blowing a fuse, or otherwise interrupting the circuit from making problems.

This is different from surge protection which essentially works in the reverse direction by protecting things “downstream” from huge jumps in voltage.

Q: What do I do if my fuse blows?

A: If you’ve blown a fuse on the generator that means something went wrong in the circuit. Do not reset the fuse and just turn it back on.

Fuses blow when there’s a problem. Identify the problem, solve it, then turn it back on.

Check for loose connections, frayed wires, or water getting into the cords if it’s outside. These can cause shorts which will blow fuses and if they’re not solved will just blow the fuse again.

Normally this isn’t a problem but you’d be silly to just keep resetting it and hoping something gets fixed. Go solve the issue, you silly billy!

Q: What is the difference between a generator and inverter generator?

A: An inverter generator is designed to provide “cleaner” power ie: less noise, voltage fluctuations by running at a a constant 3600 RPMs at 60Hz this is how it provides cleaner power so your electronics run better while being more efficient, and making your gas last longer..

Outside Pursuits Overview

Power inverter generators are essentially smart circuits built into traditional generators. They’re pretty rad and super helpful!

We’ve talked mostly about gas inverters in this article but other types of inverters include solar inverters, hydro inverters, and other tools to change DC current into controlled AC output. It’s basically magic but not really.

If you’re unsure of your needs, try talking to the local RV or camping dealer. They should be able to help you better determine what you can use with your equipment and what to avoid. Usually campers, pop-ups, 5th wheels, and RVs all are very compatible with inverter generators and you’ll love having portable power around!

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Casey Fiedler

I am an avid outdoorsman with experience in naturalist education, outside adventure education, ski instruction, and writing. In addition to my outdoor hobbies, I’m a huge fan of punk rock. I have launched several start-ups. (or business ventures) When exploring the backcountry, I usually carry less than 10 pounds of gear. Years of experience have taught me to pack light. I enjoy sharing my experiences of backcountry education teaching and guiding through writing.

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