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Cummins

Cummins Onan P4500I Portable Inverter Generator, Power Inverter Dual 5V USB Ports for Mobile Charging, Gas Powered for Backup Home Use, RV & Camping - 7.3 HP 224cc OHV 4-Stroke Engine W/Remote Start

  • Based on 134 reviews
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Features

  • INNOVATIVE & PORTABLE POWER INVERTER: The Cummins Onan P4500I inverter portable generator is your go-to source of power wherever you need it. Designed compact with RV capabilities, our portable generator is the ideal generator for home use or on-the-go power.
  • HIGH-PERFORMANCE GAS-POWERED GENERATOR: With a robust 7.3 HP 224cc OHV 4-Stroke engine, this heavy-duty generator can run your tools, electronics, and appliances efficiently. Our power generator is a great choice for reliable power at job sites or during emergencies.
  • USER-FRIENDLY RV INVERTER GENERATOR: Easy to start with a push button or pull cord backup, our power inverter generator offers smooth operation. This RV generator has parallel capability with another P4500 for up to 50A - offering you more power when you need it.
  • CONSIDERS ALL NEED: This innovative portable inverter generator features dual 5V USB ports for charging mobile devices and a 30A TT-30R outlet for camper use. An ideal RV generator for camping trips, offering clean, reliable power.
  • DURABLE & POWERFUL 4500 WATT GENERATOR: The P4500I Cummins Onan generator is more than a portable gas generator, it's your power solution. With our reliable and durable inverter/ generator, you can meet your energy needs - whether for outdoor activities or as a home backup.

Brand: Cummins


Wattage: 3700 watts


Fuel Type: Gasoline


Power Source: Gas Powered


Recommended Uses For Product: Camping


Item Weight: 98 Pounds


Voltage: 120 Volts


Output Wattage: 3700


Special Feature: Fuel Efficient, Overload Protection, Portable, Remote Start, Super Quiet


Included Components: Generator


Brand: ‎Cummins


Wattage: ‎3700 watts


Fuel Type: ‎Gasoline


Power Source: ‎Gas Powered


Recommended Uses For Product: ‎Camping


Item Weight: ‎98 Pounds


Voltage: ‎120 Volts


Output Wattage: ‎3700


Special Feature: ‎Fuel Efficient, Overload Protection, Portable, Remote Start, Super Quiet


Included Components: ‎Generator


Color: ‎Grey


Product Dimensions: ‎24.5"L x 18.25"W x 20.5"H


Material: ‎Metal, Plastic, Rubber


Model Name: ‎Onan P4500I


Engine Type: ‎4 Stroke


Ignition System Type: ‎Electronic


Tank Volume: ‎3.4 Gallons


Engine Displacement: ‎224 Cubic Centimeters


Total Power Outlets: ‎3


Current Rating: ‎30.8 Amps


Engine Power Maximum: ‎7.3 Horsepower


Starting Wattage: ‎4500 Watts


Running Wattage: ‎3700 Watts


UPC: ‎690781007925


Manufacturer: ‎Cummins


Global Trade Identification Number: ‎25


Part Number: ‎A058U955-P4500I


Item Weight: ‎98 pounds


Item model number: ‎A058U955


Item Package Quantity: ‎1


Display Style: ‎LED


Special Features: ‎Fuel Efficient, Overload Protection, Portable, Remote Start, Super Quiet


Batteries Required?: ‎No


Warranty Description: ‎3 Year


Date First Available: November 28, 2019


Frequently asked questions

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This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Powers a/c on most rv’s
Great package.. haven’t had a chance to use yet but friend owns one and they are quiet and pack a punch
Reviewed in the United States on January 17, 2026 by Fresh11
    • Perfect Generator
I purchased this to use with my toy hauler camper and it's worked great, very quiet allows me to use everything within the toy hauler without a hitch I haven't had any issues with it. A few of my family members have purchased the same one for themselves also to use with a camper or living quarter horse trailer and they also haven't had any issue with it at all. I love the remote start and shut off key fob it works for a good distance. ... show more
Reviewed in the United States on October 31, 2024 by DaniD
    • Tried and true
I bought a Generac non-inverted 8500W EFI model from Costco and it wouldn't start so I returned it. Decided to give the Cummins a try. It's not the latest design, but right out of the box (after adding oil and gas) it started right up. It's so quiet, relatively speaking (it's not going to be the gathering place at your parties) and just purrs along. They don't want you running more than 50% load until it's ran for 5 hours, so I let mine run to that point before hooking it up to my 5th wheel. Turns out my 50A 5th wheel doesn't even use 50%, at least without running AC which I didn't try. My normal hookup is only 30A, so I have no concerns with this generator being able to supply my trailer. In fact, my voltage stays up at 120 while running on the generator, whereas it drops badly when running on the park power. Changing the oil is a bit of a challenge. The body panel that covers the oil area for some reason does not line up with the oil drain plug and it's a very tight space, so it's extremely difficult to get any kind of wrench on it. I just bought a swivel head ratcheting box wrench to hopefully reach it easier in the future. I love the luggage-style handle that lets you move it around easily. I'm in the gravel and on uneven ground, so a 4 wheel setup is a problem. Tilting it up by the handle and rolling it on 2 wheels works very well. I'm very happy with the purchase. ... show more
Reviewed in the United States on November 11, 2023 by Jeff in Wenatchee, WA
    • Bad equipment
We received the generator, unboxed it and followed the instructions to start it. The generator will not even attempt to start at all. We called Cummings and GenMart. GenMart told us no replacement and we will not get our money back. That’s infuriating when we paid so much for it! We will never ever purchase from GenMart again! ... show more
Reviewed in the United States on May 13, 2024 by Very angry dissatisfied customer
    • Super fast shipping
Love this unit, the handle the lite 98 lbs is very manageable. The remote start is a great feature also. It’s pretty quiet although I thought it would be a little quieter but still not bad.
Reviewed in the United States on December 6, 2025 by Carl
    • Cummings Onan P45001 Portable inverter Generator
Works great just what we wanted Thanks
Reviewed in the United States on September 23, 2025 by Ellen Schlabs
    • Seems to be a good quality generator so far.
The product was delivered on time, but the battery compartment door waa dislodged during shipping and ended to inside of the generator. This was most likely due to the battery not being hooked down, as the battery was also loose in the box. So far the generator has started and ran for about 1 hour. It was easy to setup and get going. It runs very smooth and quiet. I would recommend generator. No complaints so far. ... show more
Reviewed in the United States on June 14, 2025 by Brandon
    • This thing is a win for sure
This thing is a champion generator! We were without power for a week and it really saved us. The remote car starter is super dope. People are always jealous of how quiet it runs. It’s definitely, definitely worth the mulah!
Reviewed in the United States on May 20, 2025 by Nicole Donnelly

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