Battery Equivalents and Replacements

GENMAX GM2800iAE Portable Inverter Generator

GENMAX GM2800iAE Portable Inverter Generator features a well-balanced design, offering a robust and reliable power generator with several interesting features at an acceptable price.

GENMAX GM2800iAE is a gasoline-only powered unit that can be used in various off-the-grid situations, from camping to emergencies and residential use.

Published: March 15, 2023.

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GENMAX GM2800iAE Inverter Generator Features and Specifications

GENMAX GM2800iAE power generator is powered by a four-stroke OHV 145cc gasoline engine, ensuring 2500 Running Watts and 2800 Starting Watts, making this unit fits the range between 2000 Watt and 3000 Watt generators.

The physical dimensions of the GENMAX GM2800iAE are (L x W x H) 20.7 x 12.2 x 19.7 inches (~52.5 x 31 x 50 cm), and it weighs 54 pounds (~24.5 kg) with no fuel.

Fuel tank capacity is 1.7 gallons (~6.4 liters), which is enough for ~8.5 hours @25% load and ~4.3 hours @100% load.

GENMAX GM2800iAE generator is relatively simple to use and maintain, but when it arrives, be sure to read the manual thoroughly and to focus on parts related to the exact generator model that you have - in this case, "GM2800iAE" (and NOT "GM2800iA!").

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GENMAX GM2800iAE features two start systems, including a standard manual recoil system and an electric Start/Stop button.

The unit features very low THD levels (<3%) and can be used to power sensitive electronics directly.

The engine speed is variable - press the "Low Idle," and the unit will automatically adjust engine speed according to the load, saving fuel and prolonging the runtime on a single tank.

GENMAX GM2800iAE features enclosed construction and is relatively quiet, ~62 dB @25% load measured for 7 meters. However, there are much quieter units on the market.

extended handle

GENMAX GM2800iAE features two handles, one on the top of the unit ("Lifting Handle") and one telescopic handle.

While the lifting handle can be used to place the unit, for example, in and out of the car/van/truck/boat/etc., it is not recommended for carrying the unit due to its weight (54 pounds).

For carrying the unit to shorter distances, the user should use a telescopic handle in combination with a pair of 4-inch (110 cm) wheels.

The front side of the unit comes with the Digital Control Center, featuring an LCD diplay showing hours run, voltage output, frequency, fuel meter, and load level. Also, it features Power, Overload, and Low Oil signal lights.

digital display center

One of the very important safety features is CO Alert which continuously monitors the amount of Carbon Monoxide in the air and, if necessary, shuts off the engine.

Nonetheless, GENMAX GM2800iAE and all other power generators with internal combustion engines MUST be operated outdoors - and no, an opened garage door is NOT outdoors.

The list of output ports includes:

  • AC: 120V 30A TT-30R, 120V 20A 5-20R Duplex
  • DC: USB 5V 1A, 5V 2.1A

For users that require more power, GENMAX GM2800iAE is a parallel-ready power generator, allowing, for example, two such units to be connected in parallel to provide up to 5000 Running Watts and 5600 Starting Watts.

However, GENMAX manufactures GENMAX 50-Amp RV Ready Inverter Generator Parallel Kit, a parallel ready kit that allows the user to connect up to three units in parallel.

genmax 50 amp parallel kit

Also, the kit features additional 120V 50A RV (14-50R) and 120V 30A locking outlets (L5-30R), protected with 30 Amp and 50 Amp circuit breakers.

For more information and up-to-date prices and offers, feel free to check the GENMAX 50-Amp RV Ready Inverter Generator Parallel Kit Amazon link (link opens in the new window).

GENMAX GM2800iAE power generator is PGMA G300-2018 compliant and EPA certified unit. Also, it comes with a 1-year limited warranty.

GENMAX GM2800iAE In Emergencies

In emergencies and blackouts, the GENMAX GM2800iAE generator can be used to power various appliances, tools, gadgets, telecommunication devices, battery chargers, and similar.

In such situations, it is very important to know the maximum Running and Starting power of the devices being used - most home appliances feature a small metallic strip with that information written on it.

When powering appliances, devices, and tools, it is important to start with the strongest one and continue toward the smallest one.

With its 2500/2800 Watts, GENMAX GM2800iAE can power, for example, a smaller AC unit, fridge, TV, charge laptop, and a few USB devices and similar.

But, it all comes down to the actual power requirements of the devices that you have or plan to have and that you plan on using during emergencies and blackouts.


Long Story Short: If You are looking for a 2000-3000 Watts power generator for use in various situations, ranging from camping, hunting, and fishing trips to tailgating and powering home appliances in emergencies and during blackouts, consider this model.

This is a well-balanced unit featuring reliable and robust construction and a fuel-efficient engine combined with inverter technology, ensuring low THD levels (<3%).

For more reviews and recommendations, feel free to check the GENMAX GM2800iAE Portable Inverter Generator Amazon link (the link opens in the new window).