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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.

  • Genmax GM5500i
  • Aceup Energy AI4500
  • Model GM5500i
    Model GM5500i

    Genmax 5,000W Gas Generator

    5000W
    Running
    62 dB
    Noise
    View details
  • Model AI4500
    Model AI4500

    Aceup Energy 3,600W Inverter Generator

    3600W
    Running
    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
SpecificationGenmax GM5500iAceup Energy AI4500
General
Product type
Generator
Not available
Fuel
Gasoline
Not available
InverterYesYes
Parallel capableNoYes
RV readyNoNo
Running watts
Winner: Winner: 5000 W
3600 W
Starting watts
Winner: Winner: 5500 W
4500 W
Noise (lower limit)
Winner: Winner: 62 dB
Not available
Weight
116.6 lbs
Winner: Winner: 62.7 lbs
Run time @50% load
Winner: Winner: 8.5 h
Not available
Run time @25% load
13 h
10 h
Fuel tank
3.5 gal
2.65 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
21.1 x 18.5 x 24
Not available
Electrical
Voltage (AC)
120/240
120V
Voltage (DC)
5
12V
GFCI outletsYesNo
Covered outletsYesNo
Automatic Voltage RegulationNoNo
THD
≤3% %
Not available
Engine
Engine
312 cc OHV 4-stroke
223cc 4-stroke OHV engine
Alternator
Not available
Not available
Starting system
Recoil, Electric
Not available
Warranty
Warranty
1 years
2 years
Power by fuel
GasolineNot availableNot available
Running watts
5000 W
3600 W
Starting watts
5500 W
4500 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
8.5 h
Not available
Run time @25% load
13 h
10 h
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
EPA, ANSI/PGMA G300-2023
EPA compliant
Security
Not available
Not available
Spark arrestorYesNo
Neutral
true
Not available
UPC
768494055455
Not available
Core / High-priority specs
Running Watts (Gasoline)
5000
3600
Starting Watts (Gasoline)
5500
4500
Runtime @ 50% Load (Gasoline)
8.5
Not available
Runtime @ 25% Load (Gasoline)
13
10
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R)
Two 20A outlets and one 30A Twist-Lock
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Dinking OHV 4-stroke
4-stroke OHV
Engine Displacement
312
223
Engine Oil Type
SAE 10W/30
Not available
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
13
10
Runtime @ 50% Load (Gasoline)
8.5
Not available
Controls & display
Display Type
Not available
Intelligent gauge
Idle Control System
Not available
Economic mode to save fuel
Safety & compliance
Overload Protection System
Low oil and overload protection
Not available
Low Oil ProtectionNoNo
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Not available
5-in-1 knob: fuel on/shut-off, engine on/off, choke
Included Accessories
Funnel, tool kit, and battery
Not available
Warranty & identification
Residential Warranty
Not available
2
Commercial Warranty
Not available
2
Part Number
Not available
AI4500
Additional specs
Summary
The Genmax GM5500i is a 5,000-watt gasoline inverter generator built around a 312cc OHV engine. It delivers enough continuous power for multiple household appliances, power tools, and sensitive electronics simultaneously. Because it uses inverter technology, the GM5500i produces power clean enough for laptops, gaming consoles, and medical devices, a trait that separates it from conventional open-frame generators at similar wattage levels.
The Aceup Energy AI4500 is a 3,600-watt inverter generator built around a 223cc 4-stroke OHV engine. It produces 3,600 running watts and 4,500 peak watts, making it suitable for home backup of essentials, jobsite tools with moderate surge needs, and applications where clean power matters. As an inverter model, it delivers stable electricity to sensitive electronics like laptops, chargers, and networking gear while handling traditional household loads and motor starts. The 2.65-gallon fuel tank and 10-hour runtime at 25 percent load support overnight run windows for light to moderate demand. Parallel capability lets users connect two units later to increase total output without replacing the generator entirely.
  • Most Powerful
    Genmax GM5500i
    5000W running
  • Quietest
    Genmax GM5500i
    62 dB
  • Longest Runtime
    Genmax GM5500i
    8.5h at 50% load
Where to buy
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Genmax GM5500i
Store links
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Aceup Energy AI4500
Store links
No links yet.
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