Genmax GM5500i - 5000/5500W Inverter Generator With Electric Start
The Genmax GM5500i is a compact inverter generator with a rated wattage of 5,000 W and a starting wattage of 5,500 W. (Read full specs)
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Description
Zoom on the Genmax GM5500i
In summary, the Genmax GM5500i is a compact portable inverter generator especially useful for:
- RV travellers looking for even more independence
- People occasionally participating in outdoor fairs, festivals or events
- Food truck owners who want to ensure that their business is fully self-contained and does not rely on potentially unreliable external power
- Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
- Professionals who want to ensure that a power failure will not prevent them from working
In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed.
Power & Run Time
The Genmax GM5500i is powered by a 312 cc Dinking OHV 4-stroke engine. It delivers 120/240V, runs on gasoline and offers a running wattage of 5,000W as well as a peak wattage of 5,500W.
At a noise rating of 62 dBA (just slightly more noisy than a normal conversation), this inverter generator can be started via a standard recoil pull-rope starting mechanism, or an easy-to-use and reliable electric starter (battery included).
The GM5500i's fuel tank holds 3.5 gallons, ensuring uninterrupted operation for up to 13 hours with a full tank (fuel consumption approximately 0.27 GPH).
With a <3% Total Harmonic Distortion (THD), the GM5500i delivers a clean sine wave—essential for safeguarding your delicate electronics when plugged into its AC outlets.
Outlets
The control panel features the following 5 AC outlets:
Moreover, it boasts 2 DC outlets: there's two 5V USB ports (USB-A) ensuring convenient charging of devices like mobile phones and tablets, for connectivity on the go.
Since it features a twist-lock L14-30R receptacle, the GM5500i is tailored to be transfer switch ready, making it easy to connect it to your breaker box for home power support during outages.
Portability
With its enclosed inverter generator design (L21.1 x W18.5 x H24 in), the Genmax GM5500i offers superior aesthetics and operates with minimized noise levels, distinguishing itself from standard, open frame generators. This modern design aims to provide an ideal power solution to recreational users.
Since the generator weighs 116.6 lbs, it will be incredibly difficult to manually lift it and transport it, even though it is technically considered to 'be portable' (in the sense that it is movable). Still, once it is on the ground, its set of 2 wheels (⌀5.5") and its telescopic handle can easily solve the issue of low mobility and allow for easy relocation of the device.
Features
To help you monitor the GM5500i's status and activity, its control panel is equipped with a digital data center, giving you information on the frequency, lifetime run hours, voltage, power output and fuel level.
In addition to this info, light indicators on the device will notify you if its oil levels are insufficient, the generator is ready and the generator is on overload.
From a security standpoint, the product offers an automatic low oil shut-off and an overload protection (circuit breaker), allowing you to use it with a peace of mind.
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.
Apart from the standard documentation and an owner's manual (opens in a new tab) to facilitate setup, the Genmax GM5500i features extra accessories: funnel and tool kit.
Product Videos
The Genmax GM5500i versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Genmax GM5500i compare to inverter generators of similar power (between 4500 and 5500 W).
- Considering its weight, the Genmax GM5500i registers at a modest 116.6 pounds, placing it among the lighter inverter generators in the 4500 to 5500 rated wattage selection. If weight matters to you, one of the champions in this power range is the Pulsar PGX60BiSRCO with only 93.5 pounds.
- As its lowest possible noise is rated at 62 dBA, this inverter generator qualifies as one of the more quiet of the products of similar type and power. If noise emissions are one of your priorities, you may want to take a look at the Honda EU7000iS. It's one of the quietest options among generators of similar power, rated at 52 dBA.
- Regarding its autonomy, the autonomy of the GM5500i, reaching up to 13 hours at a 25% load, can be considered as low end, compared to other inverters of a roughly equal output. If autonomy is your priority, one of the devices of a similar power output with the highest run time is the Champion 201532, reaching up to 18 hours.
- Run time is a key metric, but it's dependent on the generator's fuel tank capacity. Therefore, discussing fuel efficiency is necessary for a complete understanding. With an estimated fuel consumption of 0.27 GPH at a 25% load, this inverter generator aligns with the average gasoline usage range of comparable products. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.19 GPH, the DuroMax XP7000iHT is a device you could look out for.
Price comparison
As you can see from these interactive charts, when compared to other 4500-5500W inverter generators, the Genmax GM5500i is on the average side of the price range.
Therefore, this generator nicely fits in the expected budget for this kind of product.
The bottom line
- In the expected price range
- CO DETECT technology
- GFCI Outlets
- Electric start
- Inverter
- Lightweight for its kind (116.6 lbs)
- Quiet for its power (62 dBA)
- Decent fuel efficiency
- No remote start
- No parallel ports
- 1-year warranty
- Relatively low run time
Features and Specifications
| Inverter | Yes |
|---|---|
| Parallel capable | No |
| RV ready | No |
| Fuel | Gasoline |
| Engine | 312 cc Dinking OHV 4-stroke |
| Starting system | Recoil, Electric |
| Warranty | 1 year |
| Voltage | AC: 120/240V 60 Hz, DC: 5V |
|---|---|
| Running watts | 5,000 W |
| Starting watts | 5,500 W |
| Running amps (@120/240V) | 41.7/20.8 amps |
| Peak amps (@120/240V) | 45.8/22.9 amps |
| Run time @50% load | 8.5 h |
| Run time @25% load | 13 h |
| GFCI outlets | Yes |
|---|---|
| Covered outlets | Yes |
| Automatic Voltage Regulation | Inverter |
| AC outlets |
|
| DC outlets | 2x 5V USB port (USB-A) |
| Data center | Power output, fuel level, lifetime run hours, voltage and frequency |
| Indicators | Low oil, overload and output ready |
| Fuel tank | Steel, 3.5 gal |
| Fuel gauge | Digital |
| Weight | 116.6 lbs |
|---|---|
| Approx. dimensions (L x W x H) | 21.1 x 18.5 x 24 in |
| Noise (lower limit) | 62 dBA |
| THD | < 3% |
| Compliance | EPA, ANSI/PGMA G300-2023 |
| Security | Low oil and overload protection, CO monitoring |
| Spark arrestor | Yes |
| Neutral | Bonded to frame |
| Accessories included | Funnel, tool kit, and battery |
| Country of origin | China |
| UPC | 768494055455 |
We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.
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 GM5500i 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 consult Genmax's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-866-960-2920.
Questions & Answers
What can it power?
| Item | Running Watts | Starting Watts | |
|---|---|---|---|
| At home | Sump pump (1/2 hp) | 1050 | 2150 |
| Furnace fan (1/2 hp) | 875 | 2350 | |
| Refrigerator (energy star) | 192 | 1192 | |
| Hair dryer | 1800 | 1900 | |
| Set of 5 LED light bulbs | 55 | 55 | |
| Cell phone charger | 20 | 20 | |
| Total | 3992 W | 5467 W | |
| For camping | Radiant heater | 1300 | 1300 |
| RV refrigerator | 180 | 600 | |
| Hair dryer | 1800 | 1900 | |
| Rice cooker | 650 | 650 | |
| Set of 5 LED light bulbs | 55 | 55 | |
| Total | 3985 W | 4405 W | |
| For work | Table saw | 1800 | 4500 |
| Reciprocating saw | 730 | 960 | |
| Drain cleaner | 250 | 250 | |
| Total | 2780 W | 5480 W |
Where can I pick up a replacement air filter? (Asked November 13, 2022)
Replacement parts can be ordered from GenMax: 1-866-960-2920.
Couldn't find the right answer for you? Ask your own question.



