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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.

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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
  • Camping and tailgating hobbyists looking for a portable power source

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The Genmax GM3300i in use

The Genmax GM3300i

The Genmax GM3300i's core is the 145 cc (5.2 hp) Dinking OHV 4-stroke engine, which runs on gasoline. With an output of 120V, it provides a running wattage of 3,000W and a peak wattage of 3,300W. In addition, the device is parallel capable (parallel kit (opens in a new tab) not included) and thus, can be linked to a similar or compatible unit for added power.

Enjoying a noise rating of 62 dBA (just slightly more noisy than a normal conversation), this inverter generator gets running thanks to a simple traditional pull-start mechanism.

The GM3300i can operate for up to 6 hours with a full tank (fuel consumption around 0.17 GPH), due to its fuel capacity of 1 gallon.

As the GM3300i produces a clean sine wave, with a <3% Total Harmonic Distortion (THD), sensitive electronics may be plugged in the AC outlets safely.

Outlets

The control panel includes the following 3 AC outlets:

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

In addition, it provides 2 DC outlets: there's two 5V USB ports (USB-A) with which you may charge electronics, for example mobile phones or tablets, conveniently.

Thanks to its TT-30R receptacle (TT stands for 'Travel Trailer'), this Genmax generator is RV Ready.

Portability

Since the Genmax GM3300i is an inverter generator, its closed design (L18.9 x W11.4 x H17.3 in) has an esthetical advantage over conventional, open frame devices. The featured design follows the latest trends and is ideal for easy and recreational use.

With a weight of only 47.4 lbs, the GM3300i may be viewed as a lightweight and portable generator. As it can be moved by a single person without much effort, the generator and its power can be enjoyed on-the-go. In addition, a handle (molded in the case) lets you carry it easily and further increases its convenience.

Features

Panel of the Genmax GM3300i

The GM3300i's control panel

Several light indicators serve to show you when the oil level is too low, the generator is overloaded 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. It’s a welcomed additional security feature, but don’t forget to always take your generator outside (opens in a new tab).

While the standard documentation and an owner's manual (opens in a new tab), helpful for starting the device promptly, come with the Genmax GM3300i, the following accessories are also included: tool kit and funnel.

Emissions

The Genmax GM3300i is EPA approved, but NOT CARB-compliant. Thus, it cannot be purchased or sold in California.

However, it features a spark arrestor and therefore, can be used in forested areas.

In addition, the unit meets the ANSI/PGMA G300-2018 safety and performance requirements.

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).

  • As for its weight, the Genmax GM3300i weighs only 47.4 pounds, making it one of the lighter inverter generators in the 2500-3500 rated wattage category. If weight is your top priority, one of the champions in this power category is the Pulsar PGD40iSCO, weighing just 46 pounds.
  • Since the inverter generator's noise is rated at 62 dBA, it has the roughly average expected noise for a device of similar type and power. If you’d prefer a less noisy device, one of the most quiet devices, which share the same power range with this one, is the Honda EU3000iS, whose lowest noise levels reach just 50 dBA.
  • Regarding its autonomy, the autonomy of the GM3300i, reaching up to 6 hours at a 25% load, can be considered as low end, compared to other inverters of a roughly equal output. If concerned with autonomy, one of the products of a comparable power output, which offers the highest run time, is the Champion 200914, boasting with up to 22 hours.
  • Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. Standing at an estimated 0.17 GPH (gallon per hour) at a 25% load, this inverter generator is somewhat average in this area compared to other devices, within the aforementioned wattage range. If you wish to further improve in the area of fuel efficiency, the Energizer eZV3500P, which boasts with a gas consumption of only 0.13 GPH, may be the right generator for you.

Price comparison

As you can see from this interactive chart, 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
  • Several accessories included
  • RV Ready
  • Parallel capable
  • Inverter
  • Lightweight (47.4 lbs)
AVERAGE SPECS:
  • Acceptable noise (62 dBA)
  • Decent fuel efficiency
WEAKNESSES:
  • No data center
  • No electric start
  • Not CARB-compliant
  • 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
PortableYes
Parallel capableYes, cable not included
RV readyYes
FuelGasoline
Engine145 cc Dinking OHV 4-stroke
Starting systemRecoil
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 G300-2018
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralFloating
Accessories includedFunnel and tool kit
Warranty1 year
Other model numbers‎GE-3300A
UPC768494056087

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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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 contact the Genmax 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 size 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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