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Regular Retail price $1799.99

About this product

  • Onan Gasoline Inverter Portable 4500 Watt Generator P4500i with Remote Start
  • 3700 Running Watts - 4500 Peak Watts. Parallel Capable for 50-Amp Power
  • RV Ready with TT-30R RV Plug. Great for Tailgating, Camping, Backup
  • LED Digital Data Center Display
  • Push Button & Remote Start (Fob included) with Recoil Backup
  • Telescoping Handle and Heavy-Duty Wheels–Moves Easily Over Outdoor Surfaces
  • Ultra-Quiet 52dBA Operation and 18-Hour Run time 1 Tank of Gas
  • Durable Construction Built to Last: 3-Year Warranty and Lifetime Tech Support

Product Overview

4500 Generator Cummins P4500i A058U955

The gasoline inverter portable, Onan 4500 Watt Generator P4500i with Remote Start makes just 52 dBA noise—quiet enough to have a normal conversation just a few feet away. The 3.4-gallon fuel tank keeps the generator running for 18 hours at a 25% load. Use regular unleaded gasoline with 10% (or less) Ethanol.

Use the Remote Fob from your RV or the Push Button for easy, trouble free startup of the 7.4 horsepower OHV 4-stroke engine. The P4500i rolls over most terrain with heavy duty wheels and a telescoping handle. At 98 pounds, it weighs less than many competing inverter generators of equal power.

Onan 4500 Generator

The 4500 Generator is a fuel efficient, portable inverter generator with a variable speed engine that adjusts to the present load. An Automatic Choke ensures easy starts and reduces fuel consumption. The portable inverter runs for 18 hours at 25% load and 15 hours at 50% load. Approved for sale in all 50 states including California, the P4500i is CARB and EPA Compliant.

Rated at 3700 running watts and 4500 peak watts, the 4500 Watt Generator has two 120-Volt, 20-Amp Outlets, one TT-30R 120-Volt, 30-Amp outlet, and a pair of 5-Volt DC USB Outlets rated at 1 amp and 2.1 Amps. A Reset Breaker provides overload protection. Automatic voltage regulation and less than 3% Total Harmonic Distortion provide clean power for sensitive electronics and everyday appliances. Parallel a second P4500i for up to 50-Amps of Power.

The P4500i Portable Inverter 4500 Generator is both quiet and portable. At 98 pounds, it moves easy on oversize heavy-duty wheels. Operating noise down to 52 dBA is quieter the average conversation spoken in normal tones. You can still enjoy the sounds of the great outdoors or talk without shouting or raising your voice. Meets United States Forest Service and U.S. Park Service Requirements for generator noise levels and spark arresting mufflers.

Onan’s 4500 Generator features automatic, remote starts with a factory paired remote fob, push button starting at the control panel, and recoil starting as a backup. Low oil shutdown and an overload protection breaker protect the generator from damage. An LED Data Center shows fuel level and percent power output. The digital display includes remaining run time, kilowatts, Liters of Fuel, Voltage, and Lifetime hours.

Cummins Onan provides a residential warranty of 3 years, and a 1-year commercial warranty.

The 4500 Watt Generator Includes the factory paired remote fob, one 0.6 quart bottle of 10W30 oil, one spark plug, the battery charger, and documentation.

Onan 4500 RV Generator

The Onan 4500 RV Generator has remote starting and a 30-Amp Travel Trailer Outlet. Quiet 52 dBA operation and long run times on a single tank of gas make the Onan Inverter Portable perfect for RV camping. Portability plus a 120-Volt duplex outlet and 5-Volt USB outlets add functionality for tailgating, camping, or emergency power at home. Add a parallel cable and second P4500i and the two generators can supply up to 50 Amps for larger RVs or wherever you need more power.

Product Specifications

Technical Details

Product Height

Product Width

Product Depth

Peak Watts

Running Watts

Peak Amps

Running Amps

AC Voltage

DC Voltage

Recommended Oil

Fuel Tank Capacity

Engine Horsepower


Run Time, 25% load

AC Outlets

DC Outlets

20.5 inches

18.25 inches

24.5 inches

4500 watts

3700 watts

37.5 amps

30.8 amps

120 volts

5 volts

SAE 10w30

3.4 gallons

7.3 HP

98 pounds

18 hours

(1) 120V 30A (TT-30R)
(1) Duplex 120V 20A

(2) 5V USB ports

Additional Information



Item Model Number

SKU Number

Manufacturer Warranty

Manufacturer Warranty Term





3 years

Cummins Onan 4500 Watt Generator Add ons

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