GENMAX · Inverter generator

GM5500iHD

Gasoline + battery assist inverter generator with 5,500 peak watts

3,800W running5,500W peakSee manufacturer pageGasoline + battery assist

Compare retailer offers Retail pricing varies

GENMAX GM5500iHD 5500W Portable Hybrid Inverter Generator 2026 — Official product image: GENMAX

Visual spec gallery

The deciding numbers, made scannable.

Scroll sideways to explore →

01 · Maximum output

5,500W peak

Continuous output3,800W running

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

02 · Fuel output

Gasoline + battery assist

3,800W run · 5,500W peak

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

03 · Portability

56.7 Pounds

Unit weight

19.1"L x 11.2"W x 17.9"H

Dimensions

Sound rating

See manufacturer page

04 · Controls & ownership

Starting

See manufacturer page

CO shutoff

Manufacturer-listed

Parallel

Not listed

Warranty

3 years

Official product gallery

Every manufacturer view in one place.

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

Official GENMAX GM5500iHD product image 1 — Official GENMAX image 1 of 9

Official GENMAX GM5500iHD product image 2 — Official GENMAX image 2 of 9

Official GENMAX GM5500iHD product image 3 — Official GENMAX image 3 of 9

Official GENMAX GM5500iHD product image 4 — Official GENMAX image 4 of 9

Official GENMAX GM5500iHD product image 5 — Official GENMAX image 5 of 9

Official GENMAX GM5500iHD product image 6 — Official GENMAX image 6 of 9

Official GENMAX GM5500iHD product image 7 — Official GENMAX image 7 of 9

Official GENMAX GM5500iHD product image 8 — Official GENMAX image 8 of 9

Official GENMAX GM5500iHD product image 9 — Official GENMAX image 9 of 9

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

3,800 running watts and 5,500 peak watts for rv power and home essentials. Confirm exact configuration and included accessories with the seller before purchase.

Fuel-specific output

Gasoline + battery assist: 3,800W running / 5,500W peak

Operation & ownership

Engine: See manufacturer page
Voltage / frequency: See manufacturer page / 60 Hz
Runtime: 1.5 hours), with no manual operation required, ensurin
Fuel capacity: See manufacturer page
Sound: See manufacturer page
Starting methods: See manufacturer page
Unit size / weight: 19.1"L x 11.2"W x 17.9"H / 56.7 Pounds
Warranty: 3 years

Connections

See manufacturer page

Manufacturer feature details

【Revolutionary Hybrid Boost Technology】 3800W Rated / 5500W Peak Power. Our exclusive hybrid assist system integrates a gas engine with a detachable battery to deliver explosive peak power, capable of starting both a 15,000 BTU and a 10,000 BTU air conditioner at the same time. Enjoy 5500W-level peak performance in a lightweight, compact 2000W-sized frame.

【 300W Battery-Only AC/DC Output】Power 300W of AC/DC devices without ever starting the engine for zero noise operation—ideal for camping and quiet office use. With auto charge & stop, it reliably meets your daily low-power needs continuously and conveniently.

【144Wh portable power station】 The external battery supports bidirectional charging and discharging with independent output ports, so it works standalone as a power bank for phones, laptops and devices. It can be recharged with any Type‑C charger, no special adapter needed. You get a complete generator plus a dedicated 144Wh portable power station in one system.

【Smart Auto-Charge & Extended Runtime】In auto mode, when the battery voltage is below 16V, the generator automatically charges the battery while supplying power to the load (fully charged in about 1.5 hours), with no manual operation required, ensuring continuous and stable power supply.

【Clean & Quiet Energy for Sensitive Devices】 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.

【Safety Features & EPA Certified】Includes a built-in CO sensor for safety and EPA certified for sale in the USA. Backed by a 3-Year Limited Warranty and ongoing technical support.

Show the full manufacturer specification table

Power Source: Fuel Powered
Brand Name: GENMAX
Output Wattage: 5500
Included Components: Dual-Purpose Screwdriver, Spark Plug Socket Wrench, NEMAL14-30P Bonding Plug, Remote Control Key, Battery, Instruction Manual
Additional Features: CO Sensor
Model Number: GM5500iHD
Item Weight: 56.7 Pounds
UPC: 760790742763
Item Dimensions L x W x H: 19.1"L x 11.2"W x 17.9"H
ASIN: B0GT8WW8XP
Warranty Description: 3 years

Current seller links

Compare offers from GENMAX-listed retailers.

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

Amazon Generator Superstore

Best-fit uses

RV power
Home essentials
Tailgating
Jobsite tools

Standout features

3,800 running / 5,500 peak watts
Gasoline + battery assist
Manual start
CO shutdown system

Compare it with your actual load.

Run your essentials through the calculator before choosing a generator.

Check my power plan

Official sources:Model page All GENMAX generatorsVerified September 15, 2026