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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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Availability: In Stock.
Fulfilled by Midwest Aftermarket
Arrives Mar 31 – Apr 2
Order within 6 hours and 30 minutes
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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


Wattage: 3700 watts


Fuel Type: Gasoline


Power Source: Gas Powered


Recommended Uses For Product: Camping


Voltage: 120 Volts


Output Wattage: 3700


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


Engine Type: 4 Stroke


Ignition System Type: Electronic


Tank Volume: 3.4 Gallons


Engine Displacement: 224 Cubic Centimeters


Runtime: 18 hours


Total Power Outlets: 3


Frequency: 50 Hz


Current Rating: 30.8 Amps


Engine Power Maximum: 7.3 Horsepower


Starting Wattage: 4500 Watts


Running Wattage: 3700 Watts


Is Electric: Yes


Brand Name: Cummins


Included Components: Generator


Model Name: Onan P4500I


Model Number: A058U955


UPC: 690781007925


Manufacturer: Cummins


Global Trade Identification Number: 25


Item Type Name: Generator


Unit Count: 1.0 Count


Warranty Description: 3 Year


Item Weight: 98 Pounds


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


Color: Grey


Material Type: Metal, Plastic, Rubber


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Mar 31 – Apr 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

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

    • Amazing generator
My friend purchased one of these several years ago and I had to have one. It’s so quiet it doesn’t affect anyone at our campsite when camping. Starts fist try every time. It’s a work horse for sure!
Reviewed in the United States on February 9, 2026 by Jhinze
    • 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 very quiet. I now have owned this since Dec. this unit has ran every night when temps drop below 20 degrees. With temps 15 below zero on many nights this started and ran flawless.aThis has been a job saver for me, I can't say enough. ... show more
Reviewed in the United States on December 6, 2025 by Carl
    • Powerful generator, great for RV owners.
Love this thing, travels in the bed of my truck, the remote start is an awesome feature. Plugged into my camper overnight no need to go outside to start on a cold wet morning. Great product. Would highly recommend to other RV owners.
Reviewed in the United States on March 14, 2026 by Mark
    • 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
    • Quite upset
I bought this generator and it never worked from the time I took it out of the box. Of course I can't send it back because it's had fuel and oil in it. So I was told to take it to my nearest Cummins dealer which is 50+ miles away, which is where it has been for the last almost 4 weeks. Sitting with 0hrs and now I'm being told we're waiting on warranty for an answer on what their going to do. That being said I paid $1200 for a paperweight I have never been able to use. ... show more
Reviewed in the United States on June 4, 2025 by Chad
    • 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
    • Generator
Super quiet works great
Reviewed in the United States on March 23, 2026 by Patrick Garcia
    • 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

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