Top Best Portable Generators for Marine Use

Are you considering taking a portable generator on board on your next boating trip? A portable generator can be helpful support on your boat by charging your phone, recharging tablets and laptops, or powering lamps, fans, and other small useful devices.

With the latest portable generators offering a wide range of features and improved operation, the ability to use them on a boat has become an option more than ever. However, there’s a wide range of portable generators for marine use available, and finding the best product can keep you ashore longer than you like.

Best Portable Generators For Marine Purposes – Our Top Picks

Yamaha EF2000iS 2200 Watts

YAMAHA EF2200iS Inverter Generator, 2200 Watts, Blue
  • Powerful Yamaha 79cc Engine - Provides high power output.
  • Yamaha Quiet Technology - Outfitted with Yamaha sophisticated muffler for quiet operation.
  • Standard RV Outlet - No more searching for the right adapter. DC Outlet - Flexibility to charge and use devices.
  • Illuminated Multi-Function LED Display - See generator status at a glance both day and night.
  • Smart Dial Knob - Simple and easy start-up. Smart Throttle - Automatic load sensing adjusts power to device needs.

As with most things Yamaha makes, the EF2200iS generator is packed with revolutionary cutting-edge technology that delivers an impressive supply of power and excellent performance. This is why it is among our top best portable generators for marine use.

You may notice how compact it is at first glance, but it’s surprisingly long-lasting and can take a beating on countless trips. Because it’s so compact, its lightweight isn’t surprising and it’s very easy to transport. The comfortable handles made it easy to transport over long distances without chafing or cramps.

Since the quality of the energy is so high, you can freely use it to power your laptops with an in-built microprocessor. The 1.24-gallon tank can run up to 10.5 hours at 25% load, which is perfect for fishing trips or day trips out on the lake or ocean.

The fuel cut-off keeps the carburetor running dry, which also reduces starting problems if you’ve stowed it away for the whole season. The carburetor drain also ensures that every bit of fuel is drained out when stored for an extended period.

A lockable vent cap is especially useful to prevent fuel spillage, which is very important on boats. Directly on the cap, there’s also a fuel level indicator, so you can quickly take a look and know where you are.

While the amount of power supplied is considerable for everything you need, if you want more, you can combine two units for twice the power!

One drawback of the generator is that due to the position of the oil spout and the filling angle, filling oil can be difficult without spilling oil. However, you will get used to it after using it for some time.

  • 2,200/1,800 (petrol) peak/nominal wattage
  • 79 cc Yamaha MZ80 OHV 4-stroke engine
  • Fuel tank: 1.24 gal
  • 5 hours running time at 25% load
  • 120V 30A (TT-30R), (1) Duplex 120V 20A (5-20R), (1) 12V 3A Outlets
  • Recoil start type
  • 57dB noise level
  • 3-year limited warranty


  • Thanks to the high-quality power supply you can charge even your most sensitive electronics
  • Light and portable with comfortable handle
  • Low noise level
  • Can be used together with two units
  • Runtime ofcxdewwq2 10.5-hour


  • Difficulty in oil filling without spillage

Westinghouse iGen2200

Westinghouse iGen2200 Super Quiet Portable Inverter Generator 1800 Rated & 2200 Peak Watts, Gas Powered, CARB Compliant
  • 1800 Rated Watts and 2200 Peak Watts at Less Than 3% THD - Weighs Only 46 Lbs. - Gas Powered - Two 120V 20 Amp Outlets, Two USB Outlets
  • Great Choice for Home Use as an Emergency Backup in a Power Outage - Strong Enough to Run All Your Home Essentials
  • Extremely Quiet, Extremely Fuel Efficient: as Low as 52 dBA Noise Output and 12 Hour Run Time on a 1. 2 Gallon Gas Tank - Features "Economy Mode" for Maximum Fuel Efficiency
  • Parallel Capable - Combine Your iGen2200 with the Westinghouse WH2200iXLT, iGen1200, iGen2200, and iGen2500 to Increase Available Wattage and Amperage (Requires Westinghouse Parallel Cord)
  • All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA and CARB Compliant; Backed by 3-Year Limited Service, Labor, and Parts Coverage with Nationwide Customer Service Network

Coming right up is the iGen2200 inverter generator. One of its best features is the fact that it has a running time of 12 hours on 1.2 gallons.

That’s four more than you’d get from the predecessor! Those 4 hours could make the difference between a hot and sultry boat ride or a ride with hot food, coffee, and simple courtesies.

This model is one of the best marine generators available on the market because not only does it have great running time, it’s also very quiet and portable. The portability is very great when it comes to items on a boat, as you will have to carry it up and down at some point. You want them to be small, easy to carry, and lightweight.

Because it generates clean electricity, you can safely power sensitive electronics like laptops, televisions, tablets, smartphones, and more. Thanks to the two USB charging ports, several devices can be charged at the same time.

If you accidentally fall asleep or are distracted, the low-oil shutdown function ensures the safety of you and your generator. The overload protection is also very useful – especially if you need to charge many items at once or large devices.

  • 1,800/2,200 nominal/peak wattage
  • 79cc Westinghouse OHV 4-stroke engine
  • 2 gal fuel tank capacity
  • 12 hours running time at 25% load
  • Duplex 120V 20A (5-20R), (2) 5V USB ports outlets
  • Recoil starting system
  • 52dB (A) noise level
  • 3-year limited (residential), 1-year limited (commercial) warranty


  • Running time of 12 hours
  • Lightweight and easy to carry
  • Operates quietly
  • Very safe to use


  • Instructions contained could’ve been more detailed

WEN 56200i 2000-Watt

WEN 56200i 2000-Watt Gas Powered Portable Inverter Generator, CARB Compliant
  • Dimensions: 18" x 11" x 18" | Weight: 48 lbs
  • Noise Level: 53 dB operation
  • EPA III and CARB Compliant 79.7 cc 4-stroke OHV engine produces 2000 surge watts and 1600 rated watts
  • Great for campgrounds, construction sites, tailgates and power outages
  • Produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers

If you want to save some money and still take advantage of one of the best generators for boats available on the market today, then take a look at the WEN.

The lightweight construction makes it easy to take it with you to the boat, truck, campsite, etc. with the one-gallon tank you have more than 6 hours of running time with half load.

It’s not the longest, but it’s enough for day trips. If you try to extend the timeout a little, shoot straight into eco-Mode. This provides the opportunity for the engine of the generator to modify automatically its fuel consumption.

If you need more power, simply connect two identical generators through the parallel circuit set to split the wattage between the two units. The panel is equipped with three 120 sockets, a 12V DC socket, and a 5V USB connector.

So the number of applications you can use it with is infinite. It also features a low oil and fuel consumption shutdown with indicator lights and overload protection to ensure that your electronics and generator are always safe.

  • 1,600/2,000 nominal/peak wattage
  • 7cc 4-stroke OHV engine
  • 1-gallon fuel tank capacity
  • Running time of 6 hours at 50% load
  • (2) three-prong 120V, (1) 12V DC, (1) 5V USB port outlets
  • Recoil starting system
  • 50 to 55dB (A) noise level
  • 2-year limited warranty


  • Affordable price point
  • Very quiet
  • Clean energy generation
  • Relatively light construction and easy to transport
  • Can be used with various sensitive electronics
  • Eco mode maximizes fuel efficiency
  • 2-year warranty and excellent customer service


  • You have to remove the entire panel to check/change oil,
  • although the inverter energy generated is clean, it’s not technically a pure sine wave

Rockpals 250-Watt Portable Generator

ROCKPALS 250-Watt Portable Generator Rechargeable Lithium Battery Pack Solar Generator with 110V AC Outlet, 12V Car, USB Output Off-grid Power Supply for CPAP Backup Camping Emergency
  • UPGRADED 250-WATT POWERFUL AC, USB AND 12V OUTPUTS: Comparing to similar battery powered generators, Rockpals RP250W portable generator has upgraded the AC output to 250W continuous (300W surge max) dual AC outputs, built-in 2x USB 2.1A and 4x DC 12V ( 60W ) ports. Perfect emergency backup power for home/ travel/ camping, charging up your tablets, iPhone, iPad, laptops, fans, TV, lights and CPAP machine (*Use DC converter from your CPAP would get longer hours)
  • HIGH CAPACITY LIGHTWEIGHT LITHIUM POWER PACK: 240WH(3.7V 64.8Ah/12V 20Ah) lithium polymer batteries and weights 5.5lb. powerful enough to charge smartphones ( 2500mah ) 25 times, laptops ( 50W ) 3-5 times, 32" TVs ( 75W ) 2-3 hours, mini car refrigerator ( 60W ) about 4 hours or other small appliances, lights, and more (AC output). This solar generator is also very handy to be put on your RV, camper and perfect for emergencies, camping or wherever you need power
  • EASILY RECHARGEABLE VIA THREE WAYS: 1)The solar generator can be recharged from the sun with any compatible 60W or 100W solar panel (SOLD SEPARATELY). 2) This battery pack can be fully charged in 8 hours by being plugged into the wall outlet. 3) The portable power station can also be charged by plugging into your car 12V socket. (Car charger included)
  • PURE SINE WAVE INVERTER: Better than modified sine wave and clean power like utility supplied electricity. Inductive loads like microwaves and motors run faster, quieter and cooler. Reduces audible and electrical noise in fans, fluorescent lights, audio amplifiers, TV, fax and answering machines. And it is a gas-free source of portable power supply, it runs quiet (The cooling fan on the side of generator will make a slight sound when working), no exhaust fumes
  • WHAT YOU GET: Rockpals portable generator (240Wh Portable Power Supply), 6.5ft / 2m AC adapter, 3.3ft / 1m car charger cable, DC to Cig Socket adapter, user guide

You can easily grasp the included handle and carry this 5.5-pound portable unit with you to efficiently run sine wave AC power on tablets, phones, laptops, fans, lights, and TVs.

The in-built 3.7V 60Ah battery has several charging options, which makes it very practical for use on a boat. You can charge it from a wall socket, in your vehicle using the supplied adapter on a standard car accessory cigarette lighter socket or outdoor by connecting it to a compatible solar panel.

With this portable generator, you can switch on and charge several items at the same time. It is equipped with four 12V DC connections with a 5.5mm DC jack, two AC outputs, and two 5V USB ports. The Rockpals also have overvoltage and short circuit protection, temperature control, and overcharge protection.

Remember that some Apple products may not work or at all. Also, you may not be able to operate devices at the same time that the generator battery is being charged.


  • Easily portable
  • Sine wave alternating current power
  • Several options for charging the built-in battery
  • Includes Car adapter
  • Diversity of sockets and connectors
  • Overvoltage and short circuit protection
  • Temperature control
  • Overcharging protection


  • Apple products may not charge properly
  • Cannot charge and produce output at the same time

200W Peak Power Station Flashfish Battery 166Wh

200W Peak Power Station, Flashfish CPAP Battery 166Wh 45000mAh Backup Power Pack 110V 150W Lithium Battery Pack Camping Solar Generator For CPAP Camping Home Emergency Power Supply
  • Wide Application: Our 166Wh portable generator is provided with three outputs: two 110V AC outlets charge CPAP machine/tablet/laptop/ camera/drone/ fan etc, three USB ports (2 of them are quick charge ports) help for smart phone/ ipad/GPS and any electronic devices, and two DC ports can be used for vehicle tools like car cleaning and type replacement; Suitable for travel camping, fishing, outdoor activities, medical care and any emergency situations.
  • Specific Features: With 45000mAh capacity, pure sine wave, 150W AC continuous power and 200W AC peak power, this power supply pack is able to more stably charge a number of devices for many times; Compact and lightweight design (only 4.5lb) make it more convenient taken outside.
  • 3 Ways to Recharge: There are 3 options for you to recharge the large-capacity power bank: the wall outlet, solar panel (not included in package) and 12V car socket. And their accessories like power adapter, cigarette lighter adapter and car charger are all included in the package.KINDLY NOTE THAT THE POWER STATION CAN NOT BE CHARGE AND USE AT THE SAME TIME.
  • Safety Performance: This power station is provided with overheat protection, short-circuit protection, low-voltage protection, lock-on protection, over-voltage protection and over-current protection which prevent your devices from damaging and make you use it at ease.
  • Portable Power Source: Simple to use, there is a power button on the middle to turn on the generator, so you won’t be pulling any ripcords to turn on it; it will allow you to camp and recharge power without running a noisy, super cool product for your outdoor camping and travel.

With this handy portable generator for marine use, which delivers 150 running watts of pure sine wave power, you can charge your camera, phones, tablets, lamps, fans, and even a mini-fridge. With an in-built handle and compact case design, this 4½-pound generator can be stored easily on your boat to save space.

At a very affordable price, this product comes with three different types of outputs, including two 110V AC outlets, two 12V DC ports, and three USB connectors. Two of the USB ports are constructed for fast charging at double speed. When it’s time to charge this generator, you have three options: a wall socket (includes adapter), a car outlet (includes charger and adapter), or a solar panel (must be purchased separately).

The Flashfish has a helpful LED screen that shows the charging status of both your devices and their internal battery. It also has various short-circuit, voltage, and overheating protection and safety features.


  • Best value
  • Sine wave output
  • Easily portable
  • Multiple outputs and connections
  • Two fast recharging USB ports
  • Three options for charging the internal battery
  • Charging adapters included
  • LED display
  • Many safety precautions


  • Difficult to return if malfunctioning
  • Solar panel purchased separately

Soyond Portable Solar Generator

If you want to bring a multifunctional device to your boat, you should consider the Soyond portable solar generator. Aside from its 4-in-1 USB charging cable for phones, the compact vertical design of this generator contains a light on one side that is fairly bright and can be useful for fishing.

It has an additional two 3W LED lamps, along with a 3W output for these lamps. The Soyond also provides an FM radio, Bluetooth compatible speakers, and a TF card slot for playing stored music.

The speakers deliver moderate to good sound. Other features on this unique are a digital LED display, power buttons, and charge and power indicators.

With a built-in handle, this lightweight 4.4-pound generator can easily be used on your trips on the water. If you’re far from shore, you can use the included 6W solar panel kit to charge the backup lithium battery with a capacity of 800mAH. Otherwise, charge the battery with the supplied adapter in a 110V socket or a car charger.


  • Multifunction tool
  • Contains a bright light and two 3W LED lamps
  • Offers options for music playback
  • 4-in-1 USB cable
  • Light and portable
  • Includes a 6watt solar panel kit
  • Has an adapter for recharging
  • LED display


  • Only able to recharge phones
  • Possibly no sine wave output

A-iPower 2000-Watt Portable Inverter Generator

The portable inverter generator A-iPower provides you with plenty of electricity while you’re on your boat. This 2,000-watt peak generator and 1,600 running watt use lo-idle technology for an amazing long nine-hour at 50% load and a four hour at 100% load with a full fuel tank of 1.1-gallon. This gas-powered generator runs quietly enough to make calls on deck.

You get safer and cleaner power with the inverter from the two 120V sockets and the 12V multifunctional connection. The generator is supplied with a DC adapter plug that is USB compatible. Also, the A-iPower is ready for parallel use and has a multi-switch for start, run, and stop, an in-built fuel gauge, and indicator lights for output, overload alarm, and a low-oil alarm.

At 50 pounds, this gas-powered portable generator will require maintenance. However, it has a portable build and has a built-in handle. A-iPower maintains a two-year warranty and offers technical support.


  • Impressive peak watts of 2,000
  • Extended duration
  • Quiet operation for gas-driven generator
  • Inverter for clean output
  • USB-compatible DC adapter
  • Parallel ready
  • Overload and low-oil warnings
  • Portable with in-built handle
  • Awards two-year warranty and technical support


  • Heavier at 50 pounds
  • Gas operated requires maintenance
  • Quality control problems in case of malfunctions

A generator for a boat: how should it be?

You’ll most likely need to prepare it for use on a boat, as most are not designed to withstand the salty air (when at sea) and other factors. The muffler can rust easily, among other things in these environments. Spray the muffler with high-temperature paint to protect it.

It’s a good idea to create a hood to protect the generator from moisture too. Also, spray the connections with waterproof paint

Three types of portable generators for boats

Portable generators are available in three versions: Conventional, inverted, and electric or solar. Here’s a breakdown of the individual variants:

Conventional generators — these portable generators run on fuel and are similar to an engine (and all the noise it makes). This type of boat generator provides a steady flow of electricity to any equipment you connect to it.

Inverted generators — this generator is more like a large battery that has an even charge at all times that you might not get with a more conventional generator.

Electric and solar generators — while these are an environmentally-friendly option, they don’t have the same power output as the types mentioned above. However, if you’re thinking about solar panels for your boat, this would be a good starting point for a test run. Although the power is lighter, they provide a quick charge for smaller items such as telephones and small electronic devices.

Important features to consider before buying a generator

Power output

The first thing you need to do is to find out what will drive you on your boat trips? If you want to power sensitive devices along with other small appliances, a small generator with a nominal output of 1600 to 1800 is sufficient, but to drive large devices you need at least 2200 watts rated output.

Also, if you want to power small and large items simultaneously, make a list of all these things and write their watts to calculate the total power required. This way you will find a perfect device for your boat.

Conventional vs. inverter generator

Conventional generators say everything in their name. They’re, well…conventional. They’ve been around for a while, and remain a constant source of energy such as diesel, propane, or petrol. It needs to be kept at a constant speed to provide the standard current that most households need.

Inverters are much more high technology, and usually 3-phase generators that, like most conventional models supply alternating current. However, this current is converted to direct current and then inverted again to purify alternating current. These are ideal for sensitive products such as smartphones and tablets.

Power sockets

Next up are the power outlets. Make sure that the generator you choose has the desired sockets. There must be two 120V AC sockets and one DC socket and a USB port. Also, try getting a generator with GFCI protected sockets.

Tank capacity and running time

Since you’re buying a portable generator for a boat so tank capacity and running time are very important to consider. For long boat trips, you must choose a generator with large fuel tanks; otherwise, a 1-gallon tank is sufficient for a 6 to 7-hour ride.

If your generator is not fuel-efficient, a large fuel tank like 2 gallons or more is not enough. Make sure your unit has an eco-mode. However, the running time also depends on the applied load.

Noise Level

It’s advisable to go for portable inverter generators for use on a boat as they generate less operating noise. Less than 65dB (A) operating noise is quite tolerable.

Parallel capability

A parallel-capable generator for boat trips is a must so that you can generate more electricity if necessary.

Security Features

Low oil alarm with shut down function and overload protection are the two security measures that must be part of your generator. Apart from this, it’s an advantage if an emergency stop switch is available.

Weight and Guarantee

Ensure your portable generator is lightweight. It must also, have an excellent grip to carry it easily to the boat. In addition to the weight, the warranty period must also be taken into account. At least your generator should have a period of a 2-year warranty.

How to marinate your generator

It’s very important to spray the relevant parts with a waterproof spray. It’s always a good idea to some kind of fairing to prevent the generator from getting wet and to use some kind of rubber bearing.

Frequently asked questions

Is it safe to use a bi-fuel generator or run a propane generator while on a boat?

It is safe to use a dual fuel generator on a boat, but running it on propane is not safe. In the event of a leak, the liquid propane will fill the bilge, and any spark can cause an ignition, thereby having a devastating effect on your life.

Do I have to ground a generator for use on a boat?

No, it’s not necessary to ground your generator to use it on a boat. Grounding is necessary if your generator is connected to the building wiring.

If the equipment and electronics are connected via sockets and the metal parts of the generator are connected to the frame of the generator, you don’t need to ground your generator.

What protective measures should I take when using a boat generator?

  • Refueling of your generator should not be done while you are on the boat
  • To avoid filling up your cabin with carbon monoxide, avoid operating your generator near doors and windows
  • Avoid starting your generator near to wet spot
  • Make sure that no fuel is leaking
  • Keep your generator on the boat high enough to protect it from waves

In a Nutshell

Installing a portable generator permanently on your boat is not advisable or making unauthorized modifications to the generator.

Nevertheless, it’s wise to build some kind of fairing to prevent the generator from getting wet during operation.

It’s obvious that getting wet on a boat is a very real possibility, so it’s imperative that you take measures to prevent this from happening, otherwise you risk serious damage and danger.

Although we were happy with every model in our guide, we have a few that caught our eye: the Yamaha, and Westinghouse. The Yamaha is powerful, has a running time of 10.5 hours, and very lightweight and portable.

The Westinghouse had an incredible running time of 12 hours, is very safe to use, and also portable. Ultimately, however, it’s entirely up to you and your requirements. Which the top best portable generators for marine use will you be using?

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