Champion 3500 Watt Dual Fuel RV Ready Portable Generator
- Your purchase includes One Champion 3500-Watt Dual Fuel RV Ready Portable Generator and One LPG Hose with Regulator
We start this list with the 3,500-watt Champion generator, a model that will delight outdoor enthusiasts. This watt portable generator for rv puts power directly into your hands and is not overweight or noisy, making it easy to move around for the great outdoors. The 3400-watt portable generator has many great features that will make your next RV excursion even more enjoyable. The generator for your needs runs up to 7.5 hours of battery life at 25% load and not full load, it will power your devices for a long time. Your generator should also be able to power an air conditioning unit, and this one, capable of running a 15,000 BTU RV air conditioner, works. Works great with both types of fuel.
It is one of the quietest and highest rated RV generators. It operates at a level of 59 dBA at 23 feet, which is well tolerated for RV use or even outdoor use such as parties or campfires, without noise disturbance. The unit operates on a “bi-fuel” basis with gas or propane. It also detects and activates a low oil shutdown function. It takes it to the next level with a 3-position electric start switch and the ‘quick touch panel’, providing access to controls in a central location.
Lasting up to 7.5 hours at 120V / 3,100 watts on gas, you get RV-friendly perks like one 30A outlet and two 120V / 20A outlets. That’s more than enough to run all the elements. basic and even those delicate electronic components with ease. If additional power is needed, the unit is ready to parallel connect with other Champion units for even more power. The economy mode feature saves valuable fuel, extends engine life, and the generator runs even quieter.
This portable generator is also super quiet. It also prides itself on being able to run for up to 12 hours, provided your tank is full and you use it at 50% charge. I can also assure most of the users of this device that they can protect their electronic devices and devices from voltage spikes by using the voltage protector, which is a surge protector. The portability of this quietest generator is also one of its strengths. It even comes with a sturdy steel frame with an easy-to-handle folding handle for easy portability and maneuvering. This is one of the best portable generator for RV in 2021.
Honda EU2200i 2200-Watt 120-Volt Super Quiet Portable Inverter Generator
- This popular model can operate a wide variety of appliances, making it perfect for portable use at home, camping, on the job site, or much more. Reliable Power is now at your fingertips with Honda's Inverted Generators.
If you’re looking for the best small portable camping generators out there, I suggest you consider the Honda EU2200i. It’s one of the most popular Honda on-board RV generators today, and I think that’s for a few good reasons. It has a removable starter cord, much like a lawn mower, so there are fewer moving parts to break or malfunction. Generates 120 V (2000 watts) and offers parallel compatibility with other EU2000i units with a single parallel cable. The unit comes with a 20A and 30A plug for VR applications (optional adapter required).
Honda has been making extremely quiet and easy-to-use generators for years. There’s a good reason racks get stolen when they’re available. Honda is one of the biggest and most trusted names in the generator business, and this powerful generator is no exception. One of the main reasons for its popularity is the fact that it is very versatile in the sense that it operates a wide range of devices. With such versatility, it is ideal for portable use, whether in your RV, at camp, on a job site or at home. I found that it was primarily designed to provide users with consistent, reliable power.
Although it’s lightweight at just 50 pounds, it can easily handle power for all of your RV needs like TV, DVD, refrigerator, microwave, coffee maker, electronics, and more. It is extremely fuel efficient, runs on gasoline. It is also an extremely quiet operating model. The cost is moderate (> $ 1000) but it is worth the price for the longevity and the benefit of a portable and reliable power source. This model is pretty much the best portable generator for RV trips.
WEN 56200i 2000-Watt 79.7cc OHV 4-Stroke Gas-Powered Portable Inverter Generator
- Dimensions: 18" x 11" x 18" | Weight: 48 lbs
The WEN 56200i is a portable 4-stroke generator capable of delivering 1600 running watts and 2000 starting watts (sequence). It is extremely quiet with a noise level of 51 dB, as well as light for a 48-pound or 22-kilogram portable generator. This incredibly powerful generator has quiet operation, especially with other models and compared to the standard conversions of these devices. No matter where you live, it was created to produce clean, safe energy – no matter the campground, the construction site, or anywhere else. Since it produces clean energy, this generator will not damage any sensitive technology that you may want to take with you on the road.
This makes the generator for your rv bright for so many people because it can power various technologies including smartphones, tablets, TVs and laptops. The WEN 56200i is a portable generator that is light weight, making the motorhome suitable for vehicles effortlessly. It has an additional eco mode that makes the most of the fuel economy of this device. Having different output levels ensures that you use only what you need to save money. That being said, one of the main strengths of the WEN 56200iis the value you get for your money. For example, comparing the Yamaha EF2000 ISV2 mentioned after this list with stealing the price you have to pay for this generator. The Wen barnd may not be as famous as Yamaha or Honda, but the hundreds of positive reviews on Amazon can be taken as clear evidence that the WEN 56200i is just performing well.
It includes two regular electrical outlets, as well as a 12V outlet and a 5V USB port from which you can charge your USB powered devices directly, so you only need one cable. The WEN 56200i has a capacity of 1 gallon (3.8 liters), which seems to be a bit on average in the portable generator section. It uses fuel to produce ‘clean’ energy with low levels of distortion (3%), which means the portable rv generator shouldn’t damage your sensitive electronic components and you don’t have to worry about what you’re doing. Use it to power or charge. The WEN 56200i is significantly less expensive than the Honda generator, but still offers many of the same features as the lightweight design and the authentic sine wave inverter. One notable difference you will see is that it performs louder than more expensive models like the Honda.
WEN 56200i is the Best RV Generators in 2021
Yamaha EF2000iSv2 Gas Powered Portable Inverter
- 1600 watt rated AC output, 2000 watt maximum AC output, 13.3/16.7 amps @ 120V
The Yamaha Portable Inverter Generator is an incredibly cool and simple tool that can make all the difference in your RV vacation. It has quieter operation than many other models, making it suitable for large spaces, as well as keeping it running for extended periods of time. While it is incredibly powerful, this generator is still portable and has some incredibly cool retro features that make it attractive. This generator is designed to provide clean and safe power even outside and is suitable for electronic devices. It has a pulse width modulation system to keep the voltage and frequency stable. The Yamaha portable generator can run for an incredibly long time, which is why it is such a brilliant option for travelers or RV vacations it can power all your essential items for about 10.5 hours in a full tank. This generator is an incredibly powerful tool that is also environmentally friendly. It has a great EPA and CARB emission rating and is one of the best in the business.
The Yamaha EF2000 ISV2 is similar to the Wayne 56200i in many ways. It produces 2000 starting watts and 1600 running watts. It is also quiet with only 51 dB sound while working for more than a quarter of the total silence. Also, the Yamaha EF2000iSv2 is extremely environmentally friendly. The intelligent throttle current of the machine changes the engine speed based on the current load, improves fuel economy and reduces noise levels. It is CARB compliant, meaning it can be used in California with strict state restrictions against small power equipment engines.
It is lighter (WN 56200i) 44 pounds or 20 kilograms lighter than the main competitor on this list and has a larger fuel capacity (1.1 gallons or 4.1 liters). It produces extremely clean electricity with a deviation of less than 1%. The Yamaha EF2000iSv2 battery has two 120V AC outlets and a 12V DC outlet. With a load of just 51.5 dBA, this Yamaha camping generator has a maximum AC output of 2000 watts, 120V and weighs less than 45 pounds. For a gas-powered camping generator, the noise level here is significantly lower than the “noise” level. This generator has a continuous load of 1600 watts and emits 2000 watts at start-up. The Yamaha EF2000iSv2 generator is so eco-friendly that it can be sold in California. The unit is available in brown and blue camouflage. The unit is relatively quiet, and when loaded with a quarter, its noise level of 51 decibels makes it one of the quietest generators on the market and a great choice camping generator when you look for it.
One downside of this device is that after using it for hundreds of hours, its oil usage rate increases and continues to increase. When this happens, you need to add oil to it when you fill the gas tank. Arranging for services can be difficult, as there are not many approved repair centers that accept warranties. However, it is Yamaha, so there are many stores that can fix it if you do not come under the warranty. If you live in Canada, no one is honoring the warranty. The Yamaha EF2000iSv2 is without a doubt a great portable generator, but it is quite expensive. It’s up to you whether you want to spend a few hundred more dollars for its qualities and the big name of “Yamaha” or whether you have decided to buy something cheaper.
Yamaha EF2000 is the Best Generator for RV
MAXOAK Power Station 2400Wh Inverter BLUETTI EB240 Portable Solar Generator
- 【Huge Capacity 2400Wh Power Station】Super Long Lasting 2400Wh Power Station with High Load Continous 1000W Inverter (1000W≤load<1200W@120S; 1200W≤load@1s), Built in Top-Brand Lithium Polymer Battery Cell, Safety & Quality are Rest Assured. We Use Automobile-level 3C High Rate Battery Cell thus Has a Much Longer Life Cycle 2500+ Times.
MAXOAK’s 2400Wh/1000W Portable RV Solar Generator should pique the interest of any environmentally conscious RV owner. This model makes use of solar energy from a panel to provide your equipment with all of the power it requires. You may also take use of its several outputs, which include two AC, one vehicle cigar, four USBs, and one PD45W Type-C. These can be used for a variety of devices, including a phone (USB) and a CPAP machine (AC outlet). To be honest, I don’t think anyone will have difficulty finding adequate outlets for their onboard appliances.
Another feature that pleased me was the product’s battery management mechanism. It will safeguard the device from overcurrent, overvoltage, short-circuits, temperature variations, and a variety of other problems. MAXOAK’s portable solar generator is one of the safest on the market.Its LCD screen will come in helpful and make the procedure of using it much easier. This panel will show data such as remaining capacity, charging status, problems, and much more. As a result, keeping track of the entire procedure becomes a piece of cake.
The auto shut-off feature of this product should pique the interest of many purchasers because it ensures that you do not waste valuable energy. This great benefit is provided by the generator, which ensures that the generator shuts down when it achieves full charging capacity.
Champion Power Equipment 75531i Inverter Generator
- Quick Touch Panel – Access all your controls in one spot, plus Champion’s safe design includes a low oil shut-off sensor and holds 0.6-quarts of oil (recommended 10W-30)
This cool, light and powerful portable generator is a brilliant option for an RV for those who want some luxury on the road. It has incredibly high capacity and it can run continuously for up to 8 hours, making it a great option for a variety of occasions. Whether you’re on the road with your RV, doing a big DIY project, or just want an extra power source, this plug and play generator can come in very handy for you. Champion brand generators continue to be more affordable. Their digital hybrid model includes a quiet technology inverter. With RV plugs, tools and a dual USB adapter, it’s ready for anything!
It has clean energy which is suitable for even the most sensitive electronic components. You can comfortably charge your cell phone, TV or laptop without worrying about damaging it. Although this device has a lot of power, it can be controlled to avoid energy bill charging or any other way of wasting energy. It has a smart economy mode that can be used to reduce electrical load. These controls can affect the economy as well as the fuel economy.
The Champion Heavy Duty 3100 watt generator includes 3100 cranking watts and 2800 running watts, which will provide more power than a regular RV or camping trip. This portable inverter generator is delivered “RV Ready”, 120V 30A sockets used by recreational vehicles as well as two “regular” 120V20A domestic sockets and a 12V DC socket. This option should allow you to plug whatever you need into the generator which is a great advantage of this machine. Much like the Wayne 56200i, the Champion also produces its 3100 watt generator to produce “clean” power, with a deviation of less than 3% making it safe even for sensitive electronic components.
Another great thing about “Champion” is its silence. Its noise level is only 58 dB, which is less than the Honda mentioned, capable of producing less than one-third of the champion’s powers. Also, it has a great 1.6 gallon (6 liters) of fuel capacity, which lasts a long time without refueling. The only downside to the Champion 3100-watt is that it weighs 95 pounds or 43 kilograms. However, with a 3,100 watt tag in its name we can expect a heavier weight. This champion lightweight generator is both quiet (53 dBA) and convenient (9.5 hours run time). It has a capacity of 1 gallon of fuel tank with economy mode and it is lightweight below 50 pounds. It is also stackable, making it a popular alternative to RVs that require multiple generators with little space.
One reviewer highly suggested this article, forcing him to run household appliances after a power outage, wrote: “That night I bought two full-size refrigerators, a chest freezer, a 14-watt CFL spiral bulb, a charger phone and one of these square fans, Lamps with windows, boxes This generator has 2 alternative current sockets.I operated a fridge and freezer from an outlet with a 15 foot extension cord.I finally ran other refrigerators, lamps and fans from another outlet to a 50 foot cord with a power strip. I had 6 hours with a full tank of petrol, with all the devices listed above plugged in and running, including a full tank.This little powerhouse is safe enough to meet your basic basic camping needs.
Durostar DS4000S Portable Generator
- Plenty of Power – With 4,000 peak watts and 3,300 running watts, this unit can handle heavy loads, from lights and a refrigerator to a home air conditioner and high amperage power tools
This list of high-quality RV generator items would be incomplete if the DuroStar DS4000S Gas-powered Portable Generator was not included. The heavy-duty steel frame of this portable generator is something that I believe everyone will notice right away. This demonstrates the generator’s durability.
Because it includes 4-point entirely isolated motor mounts, the described frame can also help ensure that the generator runs smoothly and silently. It also has a completely silent muffler, which greatly aids in engine noise reduction. This ensures that you and the people around you are not disturbed.
Furthermore, it is proud of its comprehensive power panel, which includes all of the essential controls, such as the circuit breaker, voltmeter, and start button, as well as an oil warning light. One important difficulty is that it should not be positioned at an inclined angle since it may cause oil to slowly erupt through the unit’s air filter while in operation.
DuroMax XP4400E 4400 watt 7-Hp RV Grade Gas Generator with Electric Start
- Your purchase includes One DuroMax XP4400E 4400 watt 7-Hp RV Grade Gas Generator with Electric Start, One oil funnel, One spark plug wrench, tools set, wheels and handle kit, DC charging cables and owner’s manual
The DuroMax XP4400E is another impressive portable generator that I strongly recommend you add to your list of alternatives. One amazing advantage of this unit is that it can provide electricity to a variety of objects that require it, including recreational vehicles. It is also useful in an emergency.
It has a rated power of 3,500 watts and a maximum output of 4,400 watts. This is more than enough to power a modest house completely. I’m also pleased that it can provide continuous power for up to 8 hours when loaded to 50% capacity. Because of the built-in muffler, this generator should run quietly. You can also use the unit’s wheel kit, which comes with its own front handle. This ensures that you can transfer the unit with ease. It also has a comprehensive power panel, which displays the unit’s power outlet, circuit breaker, voltmeter, and engine shutoff switch, making it easy to handle and monitor.
The motor of the portable generator can also be safeguarded by its low-oil shutdown mechanism. With this portable generator’s idle control, you also have the assurance that it can keep the rpm at a consistent and steady level even when under heavy load.
Westinghouse iGen2500 Portable Inverter Generator
This portable generator is an incredibly powerful and versatile device. It has two 20V amp sockets as well as two USB sockets, ensuring that all your devices or equipment can be powered wherever you are. This generator is incredibly powerful and very easy to handle as a backup generator for families in an emergency. There is more than enough power and control to get all your electronic necessities. Although it is incredibly powerful, this generator has a quiet operation that will not disturb your family, neighbors or other camps while in use.
Once the gallon tank is full, this generator can run for 10 hours continuously. It also has “efficiency mode” control which can be used to change the amount of fuel used simultaneously. This generator is incredibly easy to use and has an LED display that keeps the fuel level, output power, output voltage and the rest of the time running. It helps you keep track of your energy incredibly. The Westinghouse Generator has great settings, unique functions and a really neat camping camouflage design for camping as you can see.
The biggest advantage is the silence which is around 52b which is almost the same as the other generators above. The second biggest advantage is the display that shows you interesting data, such as the output voltage, the rest of the time, the output power or the gas level in the tank. For this comparison selection, this is the only generator with this digital display and we think it is very useful and there is a reason why we included W Camo in the best camping generator review. The iGEN2015 comes with an ideal weight of 48 pounds which makes it universal for camping trips, but with its strong power range it can also be a great addition to the home. There are two 120V 20A outlets and two USB outlets. Benefit of this generator is the energy efficiency. With one gallon of petrol it can last 10 hours and it puts us at the top of our list when it comes to running time. By showing the numbers in real time with the screen, you can manage your fuel consumption more efficiently.
RYOBI 150-Watt Powered Inverter Generator
Check out this compact and portable Ryobi 150-Watt alternative for campers and camping if you want to spend less than $100 on an inverter generator. It’s a portable camping generator that weighs less than a pound and is recharged by an 18V Ryobi battery pack, which is offered separately.
This is a good option for RVers who require an extra power source on a regular basis for their smaller devices or appliances. It won’t be enough to power your major appliances, such as the microwave or air conditioner, but it will alleviate minor loads off your RV’s internal batteries.
When you start operating a number of appliances at once, it’s easy to overtax your RV’s electrical system. Although this RV generator cannot power larger appliances, it is ideal for managing minor loads and preventing overloading of your RV’s built-in electrical system.
Types of RV Generators
Diesel-powered RV generator
If your vehicle also runs on diesel, this is the best option. This style assures that you can run both your generator and your vehicle on a single tank of gas. What is advantageous about diesel is that it produces more power when compared to propane. Some users also feel that it burns cleaner than gasoline-powered generators. Furthermore, diesel-powered RV generators are not flammable. You can also keep them safe.
However, one disadvantage of using a diesel-powered generator is that it makes more noise than other types of generators. It also has substantial components and parts, which may cause it to add weight to your car. Nonetheless, many people like it because of the numerous benefits that come with utilizing it on the road.
Propane-powered RV generator
If you are looking for a more cost-effective generator, a propane-powered generator is what you need. It uses propane as a fuel source, which is then turned into electricity. A propane generator has one advantage that RV owners will appreciate: it promotes cleaner emissions. The extended or infinite shelf-life of this generator also means that you will have a decreased danger of having to replace its unused parts on a regular basis.
Because it is a clean-burning generator, the propane-powered model is also less expensive. Furthermore, it operates more quietly than other types of RV generators. The issue with this power source is that it is not appropriate for long travels or full-time RV enthusiasts. It is primarily due to its restricted runtime, which is determined by the size of your liquid propane tank. It also produces less power than gas and diesel engines. Because it does not produce as much electricity as diesel and gas generators, you must keep track of your power consumption.
Gas-powered RV generator
Gas is perhaps the most easily accessible source of fuel for RV generators. As a result, gas-powered generators are a practical option for your vehicle. It is a wise decision because practically every street corner has a petrol station that is conveniently accessible. Gas is also inexpensive, easy to use, and readily available. This type of generator is simple to refuel. You may easily keep reserve fuel for it as well. Generators powered by gasoline produce greater power than propane generators. This allows you to power on a greater number of appliances at a given moment.
The issue is that gasoline is dirtier to work with than propane. It includes more contaminants, which might have a detrimental impact on its shelf life, shortening it in most circumstances. Also, keep in mind that you will not be allowed to leave unused fuel here because it may block the unit.
Features To Look For when buying the best Generator for Van
If you can choose a smaller, more portable generator, it will be much cheaper if your generator does not meet your demand for power. The small inverter generator (1000W – 2000W) is great for TVs, laptops, stereos, a fan and some lights. They provide clean, low HD power that won’t damage your TV or other electronic equipment, and are extremely effective.
In the case of refrigerators and air conditioners, in particular, your extra joule and starting power should be considered to supply your generator. Current watts are the energy that these devices consume uninterruptedly during operation. Extra extra energy during start or thrust energy. This inrush current is only needed for a short time and most generators make adequate arrangements for it. You will notice that the specifications of the generator always include a top or starting power rating, or a continuous rating. You need to think about how many of these devices you will use at the same time. If the air conditioner and a fridge start at the same time, the starting power will be sufficiently high.
Some fuels are “cleaner” to burn than others (i.e.; propane). While propane generators are environmentally friendly, they are about 10% less efficient than gas or diesel generators. If you care about the environment, consider the fuel source for your generator. Maybe a dual-fuel model is for you. Is your choice also based on your capacity to access larger fuel sources, such as a more permanent supply, such as a propane tank? Take this into consideration as well.
The following are the primary fuel types:
Diesel RV generators are a wonderful option if your RV already operates on diesel.
Gas-powered RV generators are inexpensive and widely available.
Propane-powered RV generators are a more environmentally friendly option because they emit fewer emissions.
RV generators do not always require the same level of fuel for each event. In some cases, when vacationing at a campsite or in the woods, you will only need electricity at night for your lights. The ability to control how much fuel you use each time is essential for a portable generator. This ensures that you do not waste unnecessary work fuel. Having the ability to control the amount of fuel used is also great for the environment and can affect the volume or power of your generator. The easiest fuel to use is the fuel you already use. If you are running a diesel driver in class, you should consider buying a diesel generator set, as you will only need one fuel source.
Diesel generators are cleaner and burn more efficiently than petrol. These are hard, heavy and tough to find. The most common type is a gas generator. These are the most practical, but longer than diesel. Propane generators use the cleanest and cheapest fuel. These are more popular but more difficult to find than gas generators.
Loud generators can make or break your camping experience. We recommend that you use a generator that produces less than 60 decibels of sound. The decibel level increases significantly. A generator with a sound level of 70 dBA will sound twice as loud as a generator with a 60 dBA rating. Cheaper generators are usually more powerful generators, but you don’t have to sacrifice price for sound quality.
While taking RV vacations, you probably wanted to get away from the hustle and bustle of everyday modern life. The last thing you want on a peaceful camping trip is to ruin the natural sound and atmosphere in favor of a bad generator. Your neighbors must not approve! Most portable generators run silently and everyone on this list should run non-stop.
Exhaust maintenance period, which is the minimum number of hours that a portable generator will continue to meet exhaust requirements. The higher the number, the more ingredients are likely to be of higher quality. Over time your generator will become less efficient at producing energy and with it the emissions will start to increase. The generator owner’s manual determines the emission compliance period which is the minimum number of times that the generator can run while meeting the emission requirements. The best generators can last for 250 hours or more. Many times you will see that this emission compliance is guaranteed. Generators with longer warranty periods have more visibility and quality parts.
Frequently Asked Questions
Why do I need a RV generator?
RV generators are specifically designed to drive RV devices and provide a stable and constant power source for your home away from home. An RV generator keeps you and your family comfortable during camping trips or long car trips. If you prefer a more popular term for dry camp, independent parking or games, of course an RV generator is a necessity.
RV generators can power a wide range of devices or technologies in your RV. Depending on the size and wattage of your generator, they can be used to power anything from your cell phone, TV and computer to a larger scale device such as a mini-fridge or microwave. These are designed to give you energy wherever you are. Many families use their RVs to get away from them and most of them end up in campgrounds or in the woods. There is certainly no electricity in these environments, which can create problems for the most part. RV generators are designed to keep you safe and connected while you are away.
What size of RV generator do I need?
You need to evaluate your own needs and decide how much you are willing to compromise. For convenience you can save money or choose a smaller generator. At the end of the day, there is no single camp generator.
List all devices including all running and starting watts. Start with your complete wish list, you can always remove a few items when too large. You’ll usually find that your initial power demand for all connected devices is going to be unnecessarily high, especially if you’re using a full-size refrigerator, air conditioner, and microwave. Before you get frustrated, think about how to get started with one of these devices all at once. Although a refrigerator and air conditioner cannot be controlled, they work automatically, making it easy enough to turn off other devices for a short time if necessary.
A trailer or small RV can only have 5000 BTU AC. It requires a lot of power, about 300W running power and 1000W to start. For the 10,000 BTU RV air conditioner you should expect an operating power of 1,200 W starting from about 3,000 to 3,600 W.
The counter RV for the motorhome or RV can only start with about 150W of operating power and 300 to 450W running current under the refrigerator. A medium-sized refrigerator will require an operating power of about 400 W and an initial power of 1200 W to 1500 W ref.
Advantages and disadvantages of using an RV generator?
Having a portable generator can take your camp experience to another level. On the one hand you can take advantage of more technology, but it can make you somewhat “disconnected” from nature. On the other hand, you will become more unique and you can spend more time in more remote areas where generators will come in handy! We strongly recommend that you get one of the best generators from above, but make sure they do not disconnect you from nature!
How many watts For do I need in a RV Generator?
The size of your RV’s generator will vary depending on what you need to get. If you want to entertain on the street just for your technology like your own cell phone or even a TV, you don’t need to do anything extra. In these events, a generator with a tiny power should be enough as a Yamaha EF2000iSv2 portable inverter. In this case, make sure the power is humble enough for sensitive technology. If you want power for larger devices, you need something with higher wattage.
How to make an RV generator quieter?
There are several ways to reduce generator noise. You do not have to spend too much to do this. Here are some tips to make your portable generator more cool.
With a few simple DIY skills, you can create a fence out of plywood or MDF. When doing this, you must ensure adequate ventilation to cool and ensure that the exhaust gases can escape. Make sure you have ventilation holes in the correct positions. Also make sure the case is big enough. No part of the generator should touch the perimeter walls. Leave a space of at least 5% at the top and side of the generator.
If woodwork is not your thing, you can buy a portable generator enclosure. They will have great sound insulation and provide additional benefits of rain and snow protection, as they are weather resistant. These are easy to assemble, disassemble and transport.
If you are particularly diligent, you can install a motorcycle or car muffler on your portable generator. This can reduce noise levels by more than half of normal noise.