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GENMAX · Inverter generator

GM5250iA

Gasoline inverter generator with 5,250 peak watts

4,700W running5,250W peak192cc OHVGasoline
Compare retailer offers Retail pricing varies
GENMAX GM5250iA 5250W Portable Inverter Generator (2026), Ultra-Quiet & Lightweight, CO Detector, EPA Compliant
Official product image: GENMAX

Visual spec gallery

The deciding numbers, made scannable.

01 · Maximum output

5,250W peak

Continuous output4,700W running

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

02 · Fuel output

Gasoline

Gasoline

4,700W run · 5,250W peak

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

03 · Portability

See manufacturer page

Unit weight

20.87"L x 12.6"W x 18.5"H

Dimensions

Sound rating

See manufacturer page

04 · Controls & ownership

Starting

Recoil

CO shutoff

Manufacturer-listed

Parallel

Capable

Warranty

3 Year Manufacturer

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

4,700 running watts and 5,250 peak watts for rv power and home essentials. Confirm exact configuration and included accessories with the seller before purchase.

Fuel-specific output

Gasoline
4,700W running / 5,250W peak

Operation & ownership

Engine
192cc OHV
Voltage / frequency
120V / 60 Hz
Runtime
up to 7 hours of runtime at 25% load
Fuel capacity
See manufacturer page
Sound
See manufacturer page
Starting methods
Recoil
Unit size / weight
20.87"L x 12.6"W x 18.5"H / See manufacturer page
Warranty
3 Year Manufacturer

Connections

【Powerful Control Center】This generator features a 3-in-1 status indicator panel (Low Oil / Overload / Output) for real-time monitoring. It is equipped with versatile outlets including 1× AC 120V 30A L5-30R receptacle, 2× AC 120V 20A duplex receptacles, 1× DC 12V 8A port, and USB ports. It also supports parallel connection, allowing users to double the power output.

Manufacturer feature details

【Strong Power】The GENMAX GM5250iA Inverter Generator is equipped with a 192cc 4-stroke OHV gas engine, offering 5250 starting watts and 4700 running watts. Adopting easy smooth recoil start, premium inverter technology and a magnetic dipstick, this generator supports up to 7 hours of runtime at 25% load. It outputs stable and high-efficiency power to meet daily needs for camping, RV use, emergency power supply and job site operation.
【Easy to Carry and Use】Weighing only 60 pounds, this generator features a lightweight and compact design for easy carrying and moving. The fully enclosed structure effectively lowers operating noise for quiet operation. The matched bonding plug supports household power supply and EV charging, eliminating the need for extra adapters for better daily usability.
【Clean & Quiet Power】 Delivers ≤3% Total Harmonic Distortion (THD) pure sine wave power, safe for sensitive electronics like laptops, phones, and medical equipment, Perfect for modern digital lifestyles.
【Powerful Control Center】This generator features a 3-in-1 status indicator panel (Low Oil / Overload / Output) for real-time monitoring. It is equipped with versatile outlets including 1× AC 120V 30A L5-30R receptacle, 2× AC 120V 20A duplex receptacles, 1× DC 12V 8A port, and USB ports. It also supports parallel connection, allowing users to double the power output.
【Safety Features & EPA Certified】This generator comes with a built-in CO sensor to enhance safety during use in semi-enclosed spaces. It is EPA certified and compliant with US sales standards. We provide a 3-year limited warranty and professional after-sales technical support for daily use.
Show the full manufacturer specification table
Brand Name
GENMAX
Included Components
Spark Plug Socket Wrench (1) Dual-Purpose Screwdriver (1) User Manual (1) Warranty Information (1) Funnel (1)
Model Name
GM5250iA
Model Number
GM5250iA
UPC
760790742756
Manufacturer
GENMAX
Manufacturer Part Number
GM5250iA
Unit Count
1.0 Count
Warranty Description
3 Year Manufacturer
ASIN
B0GRZ3J4ZF
Item Dimensions L x W x H
20.87"L x 12.6"W x 18.5"H

Current seller links

Compare offers from GENMAX-listed retailers.

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

Amazon

Best-fit uses

  • RV power
  • Home essentials
  • Tailgating
  • Jobsite tools

Standout features

  • 4,700 running / 5,250 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 pageAll GENMAX generatorsVerified September 15, 2026