Cummins Onan 4500 Watt Digital Inverter Generator with Remote Start P4500i (Generator Review)
34,071
Published 2021-06-21
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
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 dB 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.
All Comments (21)
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You are the first one to point out to pull start it to get the oil circulated. Awesome advice
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We purchased this with our new RV plus dog bone for using our 50 with the gen. 30 Great information on getting started. Thanks so much.
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I have had this generator for about 9 months. Living full time in a 30 AMP RV. I have never charged my battery with the provided charger and it has started every morning with my remote charge. I have 2500 hours on it. I just did a valve adjustment at 2100 hours. I change the oil every 300 hours aswell as clean the filters and spark plug. I have also had to replace the pull cord with 550 paracord. but all and all its a great generator. Just follow the maintenance schedule in the instructions. I run my AC about 5 Hours a day and the generator runs at about 25%. But it does struggle when you run the AC and the microwave at the same time for a long amount of time. But great on gas.
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Well Gavin- you sold me on the Cummins Onan 4500i… I had two of the WEN 3800s on the way from Amazon- in fact, I saw your video last Sunday morning 9/26/21 and I ordered two of the Onans and refused the WENs when UPS pulled up the next day (Monday) to deliver them. I have been working on getting the correct generators for about two months with the help of a lighting engineer friend and I must say that your videos are fantastic- you really know what you are doing! Hooking up that Ocilloscope and showing a pure sine wave was exactly what I was looking for not to mention 4500 watts. The 3800 WENs hooked up in parallel was putting the essentials to run my house in a border-line situation. Then I found out that the WEN parallel kit was only going to supply a maximum of 6000 starting watts and I needed around 6600 starting watts (4400 running watts). The Onans will be the ticket with roughly 8000 starting watts (6000 running watts) to run the essentials. I ordered the Firman parallel kit that you showed in one of your videos, just received it and in the instructions it says it has a supply limit of 6000 watts. Will 6000 watts really overload it or should I order the parallel kit that is shown for hooking up the two Onan 4500s in parallel? https://www.electricgeneratorsdirect.com/Cummins-Onan-A058M290/p103531.html I really appreciate your help with the starting watts with the mini-fridge- that was the missing link in my calculations. I have my panel all set up with a 50 amp breaker to back feed the panel along with an interlock kit installed for safety so I don’t accidentally back feed the street power line. Looking forward to breaking in the two Onans and running a test power outage to see how everything works… Keep up the good work!
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Just seeing this from Switzerland today. All very well and clearly explained. I am happy to have seen this today. If I get one, I will do it as you explained here. God bless you Mr Garvin.
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Thanks for the demonstration we just bought one. I’m excited to get it going.
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Awesome videos! I just bought two of the 4500i because of your videos (Cummins needs to sponsor you, lol). I wanted an onboard generator for my 41’ fifth wheel, but everything is so backed up. So, instead I plan on paralleling two of the 4500i’s to run both my 15k btu ac units and my refrigerator.
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I have the Westinghouse 4500. It's the exact same except dual fuel. I've used it several times camping and at home when we lose power. Never had a problem. We have left it running all night under the front of our 5th wheel. Noise was not a problem.
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Hi we have a BNIB ONAN P4500I INVERTER. We put the oil in, and followed your instructions to a T. Our 1st drain we went and got 10w30.
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Nice generator. But I read a lot of negative comments about it. on the link you put on your video. I guess it’s gonna be preference of brand and generator that will make the consumer go out buy it. 👍 as always Gavin. Great review great video on unboxing the generator and changing the oil. Keep up the good work buddy. 🙏
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I never subscribe or comment on this stuff. I just bought a new RV and the place let me tack this on financing. Great video!! I gonna break it in the same way and put full synthetic in. Thanks man!
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I just picked one up today. Can't wait to use it.
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Your video was very thorough. I especially liked the oil change out tip....nice job....subscribed
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Just bought one today. Got a great deal
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I have a real Cummins Diesel the best in the business and a 6 cylinder known for longevity and durability!!! Almost bought a Cummins Onan generator bought a proven Honda 2200 instead but the 2500 is the most amps in the business. Just to New to know if it"s Honda tough yet. I really wanted the Cummins Onan 2500.
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Just purchased two of these but learned it doesn’t have 240v to run my 3 ton ac. Going to take them back
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Gavin, I wish I had known this before I purchased the Westinghouse version of this iGen….. Also I watched the side by side load test of the Onan vs Westinghouse video that you posted, GREAT INFO!!!!
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You're a true professional Gavin.
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Awesome video! Not I need to watch another one about this generator! Thanks
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Another great job, Gavin's Garage! Question- On the Onan P4500I, with unit running, If you turn OFF fuel valve, will the unit immediately shut down or will it run until fuel bowl empties, then shut down? It would be great for long term storage if unit would empty fuel bowl first then stall. Thanks again and keep up the good work! tf (I'm an ole maintenance guy, and I really like the comments on oil and the necessity for a proper break-in and oil change)
