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Genmax GM1200i - 1000/1200W Inverter Generator

The Genmax GM1200i is a quiet, compact and lightweight inverter generator with a rated wattage of 1,000 W and a starting wattage of 1,200 W. (Read full specs)

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Description

Zoom on the Genmax GM1200i

To sum up, the Genmax GM1200i is a quiet, compact and lightweight portable inverter generator tailored for:

  • Camping and tailgating hobbyists looking for a portable power source
  • Amateur DIY lovers

In the forthcoming sections, you'll delve into its power characteristics, the various outlets it offers, its overall portability, and the additional features it boasts.

Power & Run Time

The Genmax GM1200i in use

The Genmax GM1200i

Genmax GM1200i runs on gasoline, powered by a 57 cc Dinking OHV 4-stroke engine, delivering 120V, boasting a running wattage of 1,000W alongside a starting wattage of 1,200W. Additionally, the parallel capability (parallel kit included) facilitates doubling of power output when linked to another similar or compatible unit, offering enhanced energy capacity and reliability for diverse requirements.

Operating with a noise level of 58 dBA (less noisy than a quiet suburb), the inverter generator starts up via a classic hand-operated recoil starting mechanism.

Thanks to a fuel capacity of 0.7 gallon, the GM1200i can operate for up to 10 hours with a full tank (fuel consumption around 0.07 GPH).

The GM1200i generates a clean sine wave with <3% Total Harmonic Distortion (THD), ensuring minimal electrical noise and fluctuations. This feature makes it ideal for powering sensitive electronics, providing stable and reliable AC power through the outlets.

Outlets

The control panel provides the upcoming 2 AC outlets:

Duplex 120V 20A (5-20R)

Additionally, it features 2 DC outlets: there's two 5V USB ports (USB-A) enabling convenient charging of devices like mobile phones and tablets.

Portability

The Genmax GM1200i's characteristic encased inverter generator design (L16.5 x W9.5 x H15.7 in) provides an aesthetic advantage and contributes to quieter operation compared to any ordinary, open frame product. This modern design aims to provide an ideal power solution to recreational users.

The GM1200i boasts a weight of merely 25.3 lbs, solidifying its reputation as a lightweight, easily transportable generator. With its manageable weight, one person can easily move it around, ensuring power wherever needed. This convenience is further enhanced by its handle (molded in the case), which allows for easy carrying.

Good to know: This unit ranks 4th in our list of the 10 smallest portable generators.

Features

Panel of the Genmax GM1200i

The GM1200i's control panel

The device’s light indicators will display if its oil levels are insufficient, the generator is ready and the generator is overloaded.

From a security standpoint, the generator is furnished with an overload protection (circuit breaker) and an automatic low oil shut-off, ensuring peace of mind during operation.

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.

Besides the classic documentation and an owner's manual (opens in a new tab) to get you promptly started, the Genmax GM1200i also comes with some accessories: funnel, tool kit and RV adapter are included.

Product Videos

The Genmax GM1200i versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Genmax GM1200i compare to inverter generators of similar power (between 1000 and 2000 W).

  • As far as its dry weight is concerned, the Genmax GM1200i weighs just 25.3 pounds and thus, it is one of the lighter 1000 to 2000 rated wattage inverter generators. Weight-conscious users may find the Pulsar PGD16iSCO appealing, as it is one of the top contenders in this power range, weighing just 24 pounds.
  • If compared to generators capable of producing a similar running wattage, this inverter generator with a lowest emitted noise of 58 dBA can be considered somewhat noisy. If you'd like a less noisy alternative, the Honda EU2200i is a strong contender. It boasts a noise rating of 48 dBA, placing it among the quietest generators in its power category.
  • With a runtime of up to 10 hours under a 25% load on a full tank, the GM1200i falls within the average autonomy range among the inverter generators of a similar power. If extended autonomy is what matters most to you, the DuroMax XP2300iH could be an excellent choice, offering one of the longest run times among units in its power category, reaching up to 13 hours.
  • Though run time is a significant parameter, it's closely tied to the generator's fuel tank size. To get a comprehensive understanding, fuel efficiency must also be taken into account. Among devices of similar power, this inverter generator has one of the best fuel efficiency, with consumption rates of around 0.07 GPH (gallon per hour) at 25% load.

Price comparison

As you can see from these interactive charts, when compared to other 1000-2000W inverter generators, the Genmax GM1200i 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
  • Parallel kit included
  • Inverter
  • Lightweight (25.3 lbs)
  • Fuel efficient
AVERAGE SPECS:
  • Quiet, but noisy for its type (58 dBA)
  • Decent run time
WEAKNESSES:
  • No data center
  • 1-year warranty

Do you own the Genmax GM1200i and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
Parallel capableYes
RV readyNo
FuelGasoline
Engine57 cc Dinking OHV 4-stroke
Starting systemRecoil
Warranty1 year
Power
VoltageAC: 120V 60 Hz, DC: 5V
Running watts1,000 W
Starting watts1,200 W
Running amps8.3 amps
Peak amps10 amps
Run time @50% load6.5 h
Run time @25% load10 h
Features
GFCI outletsNo
Covered outletsYes
Automatic Voltage RegulationInverter
AC outlets1x Duplex 120V 20A (5-20R)
DC outlets2x 5V USB port (USB-A)
Data centerNo
IndicatorsLow oil, overload and output ready
Fuel tankPlastic, 0.7 gal
Fuel gaugeNo
Misc
Weight25.3 lbs
Approx. dimensions (L x W x H)16.5 x 9.5 x 15.7 in
Noise (lower limit)58 dBA
THD< 3%
ComplianceEPA, ANSI/PGMA G300-2018
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralFloating
Accessories includedFunnel, tool kit, RV adapter, and parallel cables
Country of originChina
UPC768494055271

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 GM1200i 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 sizing calculator.
ItemRunning WattsStarting Watts
At homeRefrigerator (energy star)1921192
Total192 W1192 W
For campingRV refrigerator180600
Blender400850
Game console150150
Total730 W1180 W
For workReciprocating saw730960
Total730 W960 W

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