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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 160 reviews
Condition: New
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$1,425.38
Save $73.62 was $1,499.00

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Availability: Only 2 left in stock, order soon!
Fulfilled by CWDS
Arrives Sunday, Nov 1
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At a glance

Condition
New
Model
A058U955
Dimensions
24.5"L x 18.25"W x 20.5"H
Weight
98 lb
Color
Grey
Material
Metal
Wattage
3700 watts
In the box
Generator
Warranty
3 Year

Features 5

  • 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.

Description

Designed to go wherever you do, the Onan 4500i Portable Generator brings together efficiency, durability, and performance to ensure that you'll always have power when you need it most. *Please review the included quick start guide before initial operation* The fuel-efficient P4500i has a 3.4-gallon fuel tank that runs 18 hours at 25% load. Remote start with included FOB (109yds), Push-button start, and manual pull-cord for backup. Features a 30A TT-30R outlet and two 5V USB ports for charging electronics like phones or tablets.

Specs 34

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

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 1

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 Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

Quiet running, easy set up
This is a great inverter generator. Came with easy to follow instructions. Need to fill oil (supplied BT manufacturer) need to hook up battery, add fuel. Easy start button, quiet, powers small A/C, excellent for running tools or small RV trailer.
Reviewed in the United States on July 5, 2026 by W K
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
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
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 Melissa
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
Very dissatisfied
I bought 2 of these generators with parallel kit. Delivery was great but once I put oil in them and got them started they ran for about 4 hours and then both shut down. Couldn’t get them to start again and after looking into it further 1 is leaking oil and the other not sure what’s going on just won’t start. Called manufacturer and they told me to stop by local dealer for repairs and or replacement. Can’t get me in for 2 weeks to look at them. In the meantime I had to go another generator to use until I can get replacement or refund. ... show more
Reviewed in the United States on September 30, 2023 by Eric
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
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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