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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.

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Description

Zoom on the Genmax GM1200i

In a nutshell, the Genmax GM1200i is a quiet, compact and lightweight portable inverter generator mostly geared towards:

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

In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed, including its emission compliance information.

Power & Run Time

The Genmax GM1200i in use

The Genmax GM1200i

The Genmax GM1200i's engine, 57 cc Dinking OHV 4-stroke, fueled by gasoline, can deliver 120V. It provides a running wattage of 1,000W and reaches a peak wattage of 1,200W. Moreover, since it is parallel capable (parallel kit included), its power may be doubled if linked to a second compatible unit.

The inverter generator is rated for a noise of 58 dBA (less noisy than rainfall). Its starting mechanism is based on a simple traditional pull-start 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: providing <3% Total Harmonic Distortion (THD), delicate electronics can be plugged in its AC outlets safely.

Outlets

The control panel features the following 2 AC outlets:

Duplex 120V 20A (5-20R)

It also sports 2 DC outlets: there's two 5V USB ports (USB-A) allowing you to conveniently charge electronics such as mobile phones and tablets.

Portability

The Genmax GM1200i is an inverter generator and has an encased design of the following dimensions: L16.5 x W9.5 x H15.7 in. Thus, it is more aesthetical than conventional, open frame products. The featured design follows the latest trends and is ideal for easy and recreational use.

Since the GM1200i weighs only 25.3 lbs, it can be labeled as a portable lightweight generator. A single person should not have any problems moving it around and thus, enjoy power availability on-the-go. In addition, a handle (molded in the case) lets you carry it easily and further increases its convenience.

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 light indicators show you if its oil levels are insufficient, the generator is ready and the generator is on overload.

As far as security is concerned, the generator can be used with a peace of mind, as it features an overload protection (circuit breaker) and an automatic low oil shut-off.

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, RV adapter and tool kit are included.

Emissions

The Genmax GM1200i is EPA approved, but NOT CARB-compliant. Thus, it cannot be purchased or sold in California.

However, it features a spark arrestor, so it is adequate for use in forested areas.

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

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).

  • Regarding its weight, the Genmax GM1200i only weighs in at 25.3 pounds, which means it's one of the lightest inverter generators in the 1000-2000 rated wattage range.
  • As this inverter generator has its lowest possible noise of 58 dBA, it should be considered noisier compared to its peers of a comparable running wattage. If you are concerned with noise, check out the Honda EU2200i, which is one of the least noisy generators in its power range, with a noise rating of just 48 dBA.
  • As the GM1200i offers up to 10 hours run time on a full tank at a 25% load, it falls within the average autonomy range among the inverter generators of a similar power. If concerned with autonomy, one of the products of a comparable power output, which offers the highest run time, is the DuroMax XP2300iH, boasting with up to 13 hours.
  • Even though run times are undoubtedly important, they are dependent on the fuel capacity to a large extent. For a more wholesome picture, we must take into consideration the fuel consumption of the generator. This inverter generator can be considered as one of the most fuel efficient, due to its low estimated fuel consumption of only 0.07 GPH (gallon per hour) at 25% load, within the aforementioned wattage range.

Price comparison

As you can see from this interactive chart, 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
  • No electric start
  • Not CARB-compliant
  • 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 sizer.
ItemRunning WattsStarting Watts
At homeRefrigerator (energy star)1921192
Total192 W1192 W
For campingRV refrigerator180600
Blender400850
LED TV150150
Total730 W1180 W
For workReciprocating saw730960
Total730 W960 W

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