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Compare Generators Side-by-Side

Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.

  • A-iPower GXS5000
  • Sportsman GENMAX1500
  • Model GXS5000
    Model GXS5000

    A-iPower 4,000W Gas Generator

    4000W
    Running
    68 dB
    Noise
    View details
  • Model GENMAX1500
    Model GENMAX1500

    Sportsman 900W Gas Generator

    900W
    Running
    65 dB
    Noise
    View details
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationA-iPower GXS5000Sportsman GENMAX1500
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyYesNo
Running watts
Winner: Winner: 4000 W
900 W
Starting watts
Winner: Winner: 5000 W
1500 W
Noise (lower limit)
68 dB
Winner: Winner: 65 dB
Weight
111.6 lbs
Winner: Winner: 45 lbs
Run time @50% load
Not available
Winner: Winner: 8 h
Run time @25% load
20 h
Not available
Fuel tank
6.3 gal
1 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
24 x 23.6 x 24
16 x 14 x 16
Electrical
Voltage (AC)
120
120
Voltage (DC)
Not available
12
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
23 %
Not available
Engine
Engine
223 cc OHV 4-stroke, cast iron sleeve.
72 cc 2-stroke
Alternator
Not available
Not available
Starting system
Recoil
Recoil
Warranty
Warranty
3 years
1 years
Power by fuel
GasolineNot availableNot available
Running watts
4000 W
900 W
Starting watts
5000 W
1500 W
Running amps (120V)
Not available
Not available
Running amps (240V)
Not available
Not available
Peak amps (120V)
Not available
Not available
Peak amps (240V)
Not available
Not available
Run time @50% load
Not available
8 h
Run time @25% load
20 h
Not available
Other
Data center
Not available
Not available
Indicators
true
false
Compliance
CARB, EPA, ANSI/PGMA G300-2023
EPA
Security
Not available
Not available
Spark arrestorYesNo
Neutral
Not available
Not available
UPC
850016881298
27077805444
Core / High-priority specs
Running Watts (Gasoline)
4000
900
Starting Watts (Gasoline)
5000
1500
Runtime @ 50% Load (Gasoline)
Not available
8
Runtime @ 25% Load (Gasoline)
20
Not available
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120V 30A (TT-30R)
1x Duplex 120V 20A (5-20R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
2-stroke
Engine Displacement
223
72
Cylinder Sleeve
cast iron sleeve
Not available
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
20
Not available
Runtime @ 50% Load (Gasoline)
Not available
8
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Not available
Carbon Monoxide MonitoringYesNo
Included equipment
Included Accessories
Oil, funnel, tool kit, and wheel kit.
Tool kit and battery charging cables
Warranty & identification
Commercial Warranty
3
Not available
Additional specs
Summary
The A-iPower GXS5000 is a 4000-watt gasoline generator built for homeowners and RV users who need reliable backup power without excessive noise. With 5000 watts of starting power, it can kick-start larger appliances like air conditioners and well pumps, then sustain 4000 watts of continuous output for essential devices. This wattage class handles a full home backup scenario or powers a job site with moderate tool use, but not heavy industrial equipment or multiple high-draw appliances simultaneously. At 68 decibels, the GXS5000 runs quieter than most generators in its class. The 6.3-gallon fuel tank delivers 20 hours of runtime at 25 percent load, meaning light-duty use like charging devices or running a refrigerator stretches a full tank across an entire day. The recoil start system and included wheel kit make this a grab-and-go option for users who value simplicity over push-button convenience.
The Sportsman GENMAX1500 is a portable 2-cycle gasoline generator offering 1,500 surge watts and 900 running watts, suitable for powering common household appliances and power tools.
  • Most Powerful
    A-iPower GXS5000
    4000W running
  • Quietest
    Sportsman GENMAX1500
    65 dB
  • Longest Runtime
    Sportsman GENMAX1500
    8h at 50% load
Where to buy
Prices can change. We update these automatically.
A-iPower GXS5000
Store links
No links yet.
Sportsman GENMAX1500
Store links
No links yet.
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