Cummins Onan P4500i 3700W Continuous, 4500W Peak, Gas Portable Inverter Generator, Quiet Generator with Electric Start, Remote Control, RV Ready, EPA
SKU: A074Z436
Product Summary
The Cummins Onan P4500i is a professional-grade digital inverter generator built for those who demand reliable, clean, quiet, and portable power. Use it on the road, at the campsite, on the jobsite, or as a home backup solution. It’s powered by a 224cc OHV 4-stroke Cummins Onan engine able to continuously output 3.7kW and up to 4.5kW when needed. The P4500i delivers stable, inverter-quality power that protects your most sensitive electronics.
Specifications:
- 3.4 gallon gasoline tank runs for 18 hours at 25% load
- Push button or remote control start with a backup pull cord
- Safe for sensitive electronics such as laptops, audio systems, and security systems.
- Two 5V USB-A ports, one 30A TT-30R outlet, one 120V 20A (NEMA 5-20R) receptacle
- 7.3HP 224cc OHV 4-Stroke engine
- 52dB operation
- Continuous output: 3.7kW
- Peak output: 4.5kW
- Weight (empty): 98lbs
- Dimensions (H×W×D): 20.5×24.5×18.25in
- Not for sale to the state of California
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Cummins Onan P4500i Inverter Generator EPA Overview
The Cummins Onan P4500i includes a telescoping handle and built-in wheels for maximum portability while still delivering up to 4.5kW to power most household appliances and power tools. It includes three starting options: a push start button, a remote key fob, and a backup pull cord. The 3.4 gallon fuel tank delivers up to 18 hours of run time at 25% load while operating at 52dB. This generator can power an RV campsite or provide backup power during an outage.
Key Features of the Cummins Onan P4500i
The P4500i produces clean, inverter-quality power safe for sensitive electronics like laptops and audio systems, while still handling heavy loads like RV air conditioners, refrigerators, and power tools. At 52dB it operates about as quietly as a normal conversation, making it practical for campgrounds and residential areas with noise restrictions. The digital display shows remaining fuel level, estimated run time, current power load, voltage, and lifetime run hours so you always know exactly where the generator stands.
It includes a dedicated 30A TT-30R outlet for direct connection to most RVs and campers, a standard 120V household outlet, and two USB ports. For situations that demand more output, you can parallel multiple units together. The P4500i is EPA compliant for use in the contiguous United States (not for sale in California).
Best Use for the Cummins Onan P4500i
The P4500i's combination of clean power, low noise, and portability makes it a strong fit across a range of applications. The 52dB rating and inverter output make it ideal for RV camping where quiet hours and sensitive electronics are both factors. At 3.7kW continuous, it can handle power tools and lighting on a remote jobsite without a dedicated utility connection. It's also a reliable home emergency backup for essentials like refrigerators, lights, and communications equipment during an outage. The portability and multiple outlet options make it equally useful for tailgating, motorsports, outdoor events, and food service setups.
Solar and Battery System Compatibility
While the Cummins Onan P4500i is a gasoline-powered generator, it plays an important complementary role in hybrid solar and alternative energy systems. You can use it as an AC input source for an inverter-charger like the MultiPlus-II 12V 3kVA to charge batteries, boost power output, or provide backup power on days with little sun.
Frequently Asked Questions
A conventional generator produces AC power directly from the engine at a fixed speed, which can result in voltage fluctuations. An inverter generator converts the AC output to DC and then back to clean AC through a digital inverter circuit, resulting in a stable, clean sine wave for sensitive electronics like laptops, phones, and modern appliances.
Yes, provided it is within the Generator’s specifications. Most standard rooftop RV air conditioners require 2.8-3.5kW (with higher starting surge), which is within the P4500i's 3.7kW continuous output.
Yes. The digital inverter technology produces a clean power for nearly any sensitive device.
No. The P4500i produces carbon monoxide (CO) and must be operated outdoors in a well-ventilated area and away from windows, doors, and air intakes. Never operate it inside a garage, shed, tent, or any enclosed or semi-enclosed space.
Yes. The P4500i requires an additional high altitude carburetor kit above 2,000ft.
The P4500i runs on gasoline only. Consider the P4500IDF model if propane operation is desired.
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