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Genmax GM3300i - 3000/3300W Inverter Generator

The Genmax GM3300i is a compact and lightweight inverter generator with a rated wattage of 3,000 W and a starting wattage of 3,300 W. (Read full specs)

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Genmax GM3300i
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$649.99
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Description

Zoom on the Genmax GM3300i

In a nutshell, the Genmax GM3300i is a compact and lightweight portable inverter generator mostly geared towards:

  • RV travellers who wish to upgrade their experience to another level
  • People occasionally participating in outdoor fairs, festivals or events
  • DIYers who wish to improve their efficiency with tools
  • Homeowners in need of an emergency backup power for their essentials
  • Tailgating and campground aficionados with the desire of enjoying power anywhere they go

The subsequent sections will explore in detail its power characteristics, the diverse outlets it provides, its overall portability, and the supplementary features it offers.

Power & Run Time

The Genmax GM3300i in use

The Genmax GM3300i

Running on gasoline, the Genmax GM3300i operates with a 145 cc (5.2 hp) Dinking OHV 4-stroke engine, delivering 120V, with a running wattage of 3,000W and a peak wattage of 3,300W. Moreover, since it is parallel capable (parallel kit (opens in a new tab) not included), its power may be doubled if linked to a second compatible unit.

Operating at a noise rating of 62 dBA (just slightly more noisy than background music), this inverter generator starts up with a traditional recoil pull-start mechanism.

Featuring a 1 gallon fuel tank, the GM3300i provides continuous power for up to 6 hours on a full tank (fuel consumption around 0.17 GPH).

The <3% Total Harmonic Distortion (THD) of the GM3300i ensures a clean sine wave output, providing a secure power source for your sensitive electronics through its AC outlets.

Outlets

The control panel features 3 AC outlets as follows:

Duplex 120V 20A (5-20R)
120V 30A (TT-30R) receptacle

Furthermore, it showcases 2 DC outlets: there's two 5V USB ports (USB-A) ensuring convenient charging of devices like mobile phones and tablets, for connectivity on the go.

Thanks to its TT-30R receptacle (TT meaning 'Travel Trailer'), this Genmax generator is RV Ready, ready to power your recreational vehicle with ease.

Portability

With its enclosed inverter generator design (L18.9 x W11.4 x H17.3 in), the Genmax GM3300i offers superior aesthetics and operates with minimized noise levels, distinguishing itself from standard, open frame generators. The design follows the contemporary trends and is perfect for recreationally generating power.

Since the GM3300i weighs only 47.4 lbs, it can be labeled as a portable lightweight generator. Moving it around should pose no challenge for a single person, allowing for power availability wherever you go. With its handle (molded in the case), carrying it becomes a breeze, adding to its convenience.

Features

Panel of the Genmax GM3300i

The GM3300i's control panel

Some light indicators allow you to instantly see if the generator is on overload, the oil level is too low and the generator is ready.

From a security standpoint, the product offers an overload protection (circuit breaker) and an automatic low oil shut-off, allowing you to use it with a peace of mind.

It also benefits from Genmax's CO DETECT technology, which is designed to monitor the level of carbon monoxide present during the generator's operation. If the generator is positioned incorrectly and carbon monoxide levels rise to an unsafe level, the generator will automatically shut down.

With the basic documentation and an owner's manual (opens in a new tab), letting you start the generator quickly, the Genmax GM3300i also comes with several accessories, including: tool kit and funnel.

Product Videos

The Genmax GM3300i versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Genmax GM3300i compare to inverter generators of similar power (between 2500 and 3500 W).

  • When it comes to weight, the Genmax GM3300i tips the scales at just 47.4 pounds, making it one of the lighter inverter generators in the 2500 to 3500 rated wattage range. if you wish to prioritize weight, the Pulsar PGD40iSCO is one of the top contenders in its power category, weighing only 46 pounds.
  • The inverter generator can be considered average in its noise for its type and power category, as it is rated at 62 dBA. If noise emissions are one of your priorities, you may be interested in the Honda EU3000iS, one of the least noisy generators similarly powerful as this one, rated for 50 dBA.
  • In terms of its autonomy, the GM3300i can operate for up to 6 hours at a 25% load, placing it within the lower bracket among generators of similar type and power range. If you wish to prioritize autonomy, the Champion 200977 shines as one of the top contenders, offering one of the highest run times among generators with similar power output, totaling up to 22 hours.
  • While run time matters, it's heavily influenced by the fuel tank's capacity. Hence, it's important to consider fuel efficiency alongside. This inverter generator can be considered as fuel-efficient, due to its low estimated fuel consumption of only 0.17 GPH (gallon per hour) at 25% load, within the aforementioned wattage range. If you wish to further improve in the area of fuel efficiency, the Honda EU3200i, which boasts with a gas consumption of only 0.14 GPH, may be the right generator for you.

Price comparison

As you can see from these interactive charts, when compared to other 2500-3500W inverter generators, the Genmax GM3300i is on the cheap side of the price range.

It can therefore be a really good buy if you're looking to acquire a budget generator.

The bottom line

STRENGTHS:
  • Inexpensive
  • CO DETECT technology
  • RV Ready
  • Parallel capable
  • Inverter
  • Lightweight (47.4 lbs)
  • Fuel efficient
AVERAGE SPECS:
  • Acceptable noise (62 dBA)
WEAKNESSES:
  • No data center
  • 1-year warranty
  • Relatively low run time

Do you own the Genmax GM3300i and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
Parallel capableYes, cable not included
RV readyYes
FuelGasoline
Engine145 cc Dinking OHV 4-stroke
Starting systemRecoil
Warranty1 year
Power
VoltageAC: 120V 60 Hz, DC: 5V
Running watts3,000 W
Starting watts3,300 W
Running amps25 amps
Peak amps27.5 amps
Run time @50% load4.5 h
Run time @25% load6 h
Features
GFCI outletsNo
Covered outletsYes
Automatic Voltage RegulationInverter
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (TT-30R)
DC outlets2x 5V USB port (USB-A)
Data centerNo
IndicatorsLow oil, overload and output ready
Fuel tankPlastic, 1 gal
Fuel gaugeNo
Misc
Weight47.4 lbs
Approx. dimensions (L x W x H)18.9 x 11.4 x 17.3 in
Noise (lower limit)62 dBA
THD< 3%
ComplianceEPA, ANSI/PGMA G300-2023
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralFloating
Accessories includedFunnel and tool kit
Country of originChina
Other model numbers‎GE-3300A
UPC768494056087

We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.

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About Genmax

GENMAX is a new portable generator brand registered by the Chongqing Dinking Power Machinery Co. LTD., which itself was founded in 2010 and is currently located in Chongqing, China. Dinking specializes in the general motor industry and manufactures portable generators, power sources, water pumps, garden machinery and construction machinery for foreign markets. Among most notable achievements are Dinking’s exclusive contract with Hyundai and 5th place in the ranking of Chinese foreign trade exporters in general motor industry (2016). GENMAX brand portfolio includes a sizeable selection of gas-powered generators covering all common wattage categories.

Warranty Information

The Genmax GM3300i is covered under a warranty for up to 1 year. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Genmax generators, please consult Genmax's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-866-960-2920.

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator sizing calculator.
ItemRunning WattsStarting Watts
At homeRefrigerator (energy star)1921192
Hair dryer18001900
Slow cooker270270
Cell phone charger2020
Total2282 W3282 W
For campingRadiant heater13001300
RV refrigerator180600
Toaster oven800800
Radio100100
Total2380 W2800 W
For workGrinder14002500
Reciprocating saw730960
Total2130 W3230 W
How many ounces oil does a genmax 3300i take (Asked May 18, 2022)

Engine oil capacity is 15.3 fl. oz.

Where and how can I find parts for this product? I am having trouble finding anything for this generator (Asked July 15, 2022)

Replacement parts can be ordered directly through GenMax: 1-866-960-2920.

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