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GENMAX · Inverter generator

GM1200i

Gasoline inverter generator with 1,200 peak watts

1,000W running1,200W peak57cc OHVGasoline
Compare retailer offers Retail pricing varies
GENMAX GM1200i 1200 Watt Gasoline Inverter Generator with CO Detect
Official product image: GENMAX

Visual spec gallery

The deciding numbers, made scannable.

01 · Maximum output

1,200W peak

Continuous output1,000W running

Size around running load first, then confirm the peak rating covers the largest startup surge.

02 · Fuel output

Gasoline

Gasoline

1,000W run · 1,200W peak

Alternative-fuel ratings are shown only when GENMAX publishes a fuel-specific figure.

03 · Portability

25.3 lb.

Unit weight

See manufacturer page

Dimensions

Sound rating

57 dBA

04 · Controls & ownership

Starting

Recoil

CO shutoff

Manufacturer-listed

Parallel

Capable

Warranty

3year

Official product gallery

Every manufacturer view in one place.

GENMAX imagery can include the enclosure, control panel, outlets, dimensions, feature callouts, and included accessories.

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Complete specifications

Manufacturer data, organized for comparison.

Power ratings, features, imagery, manuals, and seller links come from GENMAX’s current U.S. model page. A missing figure is labeled instead of estimated.

Never run a portable generator indoors. Keep it at least 20 feet from occupied buildings with exhaust directed away from doors, windows, and vents. Use a qualified electrician and approved transfer equipment for home connections.

Model overview

1,000 running watts and 1,200 peak watts for camping and tailgating. Confirm exact configuration and included accessories with the seller before purchase.

Fuel-specific output

Gasoline
1,000W running / 1,200W peak

Operation & ownership

Engine
57cc OHV
Voltage / frequency
120V / 60Hz
Runtime
10h.
Fuel capacity
0.7 gal.
Sound
57 dBA
Starting methods
Recoil
Unit size / weight
See manufacturer page / 25.3 lb.
Warranty
3year

Connections

120V 20A Duplex (5-20R), Parallel

Manufacturer feature details

Quiet and neighbor friendly fully enclosed design dramatically reduces noise levels.
Compact and lightweight makes transportation easy with built-in handle.
Low idle automatically adjust engine speeds to save fuel and reduce sound emissions.
LED indicators alert you when unit is low on oil, overloaded, or ready-to-use.
CO Alert - Automatically turns off the generator when an unsafe level of carbon monoxide is detected.
Parallel Ready: The product is equipped with parallel lines to connect with another 1200-watt GENMAX inverter to double your output power.
Covered outlets provide added protection from the environment.
Show the full manufacturer specification table
Quiet Inverter Generator Technology
CO DETECT
Battery
NO
Gasoline Starting Watts
1200W
Start Type
Recoil
Gasoline Running Watts
1000W
Engine Brand
DINKING
Gasoline Starting Amps at 120V
10A
Engine Displacement
57cc
Gasoline Running Amps at 120V
8.3A
Engine Type
4-stroke
Volts
120V
Engine Speed
Variable
Frequency
60Hz
Fuel Type
Gasoline
Outlets
120V 20A Duplex (5-20R), Parallel
Fuel Gauge
Yes
GFCI Outlets
No
Gasoline Capacity
0.7 gal.
Covered Outlets
Yes
Gasoline Tank Material
HDPE
Covered Circuit Breakers
Yes
Engine Oil Type
10W-30
Gasoline Run Time at 1/4 Load
10h.
Engine Oil Capacity
0.1 gal.
Noise Level
57 dBA
Low Oil Shut-Off
Yes
Inverter
Traditional
Wheels
NO
Parallel Capability
Yes
Wheel Type
NO
DC Operation
USB 2.1A/1A
Wheel Diameter
/
Voltmeter
NO
PGMA G300-2018 Compliant
Yes
Automatic Voltage Regulation
Yes
Warranty Description
3year
Lengt
16.5 in.
Widt
9.45 in.
Heigh
15.7 in.
Net Weigh
25.3 lb.
Lengt
18.1 in.
Widt
10.8 in.
Heigh
17.1 in.
Gross Weigh
29.8 lb.

Current seller links

Compare offers from GENMAX-listed retailers.

These destinations are supplied on the official model page. Prices and availability can change.

Buy on AmazonBuy on HomedepotBuy on LowesBuy on FactorypureBuy on TSCBuy on WalmartGenerator SuperstoreBuy on Northern

Best-fit uses

  • Camping
  • Tailgating
  • Small electronics
  • Light emergency power

Standout features

  • 1,000 running / 1,200 peak watts
  • Gasoline
  • Recoil start
  • CO shutdown system

Compare it with your actual load.

Run your essentials through the calculator before choosing a generator.

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Official sources:Model pageUser manualAll GENMAX generatorsVerified September 15, 2026