Cummins Onan · Inverter generator
Onan P4500i
Quiet RV-ready inverter power with remote start, wheels, and a telescoping handle.
Visual spec gallery
The numbers, made scannable.
Up to 4,500 peak watts
Power output changes by fuel. Match against the rating for the fuel you will actually use.
Gas · 25% load
15.6hr
Gas · 50% load
10hr
Operational volume
52 dBA
Manufacturer-rated minimum
Onboard tank
3.4 gal (12.8 L) gasoline
98lb
Dry weight
24.5 × 18.3 × 20.5 in
L × W × H
- Handle
- Telescoping handle
- Wheels
- 5.5 × 1.5 in wheels
- Shipping weight
- 119.1 lb
Start
Electric, remote, recoil
Engine
224cc Cummins Onan OHV 4-stroke
Power quality
≤3% THD · inverter
Safety
Low-oil shutdown
1 × 120V 30A TT-30R · 1 duplex 120V 20A (5-20R) · 2 × 5V USB
Complete specifications
Every useful detail we could verify.
Specifications were compiled from Cummins’ current North American product page and official model spec sheet. Always verify the current manual and exact part number before purchase.
Electrical output
- Gasoline output
- 3,700W running / 4,500W peak · 30.8A @ 120V running · 37.5A @ 120V peak
- Voltage / frequency
- 120V AC / 5V DC · 60 Hz
- Power quality
- Built-in inverter · ≤3% THD
- Parallel capable
- Yes
Engine, fuel & runtime
- Engine
- 224cc Cummins Onan OHV 4-stroke · Variable
- Starting system
- Electric, remote, recoil · 99 ft (30 m) remote range
- Fuel tank
- 3.4 gal (12.8 L) gasoline
- Gas · 25% load
- 15.6 hours
- Gas · 50% load
- 10 hours
- Oil
- SAE 10W-30 · 0.63 qt / 20.3 oz
- Altitude
- Carburetor kit required above 2,000 ft
- Sound
- As low as 52 dBA
Connections, safety & portability
- AC outlets
- 1 × 120V 30A TT-30R · 1 duplex 120V 20A (5-20R)
- USB / DC
- 2 × 5V USB
- Grounding
- Floating neutral
- Transfer-switch ready
- No
- GFCI outlets
- No
- Protection
- Automatic low-oil shutdown · CO shutdown not listed on cited sheet · Circuit-breaker overload protection
- Display
- LED: fuel, output, remaining runtime, voltage, lifetime hours
- Dimensions
- 24.5 × 18.3 × 20.5 in
- Weight
- 98 lb dry / 119.1 lb shipping
- Mobility
- Telescoping handle · 5.5 × 1.5 in wheels
Ownership details
- Part number
- A074Z436
- Availability
- United States and Canada; this EPA model is not for sale in California
- Certification
- EPA / CSA
- Emissions
- EPA
- Spark arrestor
- Yes
- Residential warranty
- 3-year limited
- Commercial warranty
- 1-year comprehensive
Best-fit uses
- RV use
- Camping
- Medium appliances
- Motorsports
Standout features
- RV-ready TT-30R outlet
- Factory-paired remote start
- Automatic choke and economy mode
- Parallel capable
Does this model fit your load?
Run your essentials through our independent wattage calculator.