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At 48 lbs without fuel, the Cummins Onan P2500i is light enough for most campsites and RV trips. This gasoline inverter generator runs at 2.2 kW continuous with a 2.5 kW peak.
Planning a system? Read our guide: How to size a battery backup system for your home.
Good for RV camping, tailgating and light home backup of a refrigerator or small loads.
Cummins’ Onan P2500i portable generator is gasoline powered and ideal for use in an RV, campsite, or home. It’s an inverter generator, it’s compact and lightweight, and its full one-gallon fuel tank can run 550W continuously for 10 hours. At only 48lbs without fuel, it’s easy to take on mobile adventures, and it is strong enough to start high demand loads such as a portable table saw. This portable generator runs continuously at 2.2kW, with a peak power output of 2.5kW. On one tank of fuel, the 2.2kW is enough to power an air conditioner for roughly 2.5 hours. Appliances with smaller power demands, like a refrigerator, can run much longer on a single tank of gas. If a configuration requires additional power, it’s possible to parallel two P2500i’s for a maximum continuous output of 5kW. The paralleling process is simple and requires a single cable connecting the two generators. Both generators can run an air conditioner and other appliances for a few hours, but total run time depends on the total power output and the available fuel. The Onan carburetor manages the ratio of fuel and air injected into the generator engine. The required ratio changes at various elevations, and this generator operates up to 2,000ft. Higher elevations require the additional high altitude carburetor kit to keep the P2500i operating up to 7,000ft. This compact generator includes two outlets and two USB ports above a system display screen. The digital display shows detailed information about the output voltage, output current, and remaining run time. LEDs beside the panel also indicate the fuel level and power output percentage. As an inverter generator, it has low THD (Total Harmonic Distortion). This means the generated power has few fluctuations in frequency or voltage, creating premium power that is safe for sensitive electronic devices like clocks, fans, and TVs. Accessing the P2500i’s interior for maintenance is simple and requires no tools. A single rotating lock holds the side panel in place, and removing the panel allows users to manually check the oil level, fill the oil, or perform other maintenance tasks. Onan’s ultra-quiet 2.5kW generator is well insulated to eliminate excess noise. It runs around 73dB (decibels) under normal operation, but the ECO option can drop this to 52dB. The ECO option conserves fuel by limiting the motor RPMs to only that needed by the required loads, and it allows for greater surge capacity. Choose the Onan P2500i for a reliable, lightweight, and EPA approved generator for mobile adventures.
Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.
We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.
Ask our team whether one P2500i or a paralleled pair suits your RV. Message our team on WhatsApp.
Cummins
RV owners get a dedicated 30A TT-30R outlet on the Cummins Onan P4500i, a gasoline inverter generator with 3.7 kW continuous and 4.5 kW peak output. It runs at 52dB, roughly the level of a normal conversation.
$862.92
Cummins
The dual-fuel P4500iDF lets you run on gasoline or propane, with a propane hose supplied. On gasoline it makes 3.7 kW continuous and 4.5 kW surge; on propane, 3.33 kW continuous and 4.05 kW surge.
$916.92
Cummins
Electronic fuel injection sets the P5000iDF EFI apart from carburetted models, cutting maintenance and keeping it dependable at altitudes up to 13,000ft. It is a dual-fuel inverter generator rated at 3.9 kW on gasoline and 3.5 kW on propane.
$1,249.00
Cummins
When you need more than a small inverter can give, the Cummins Onan P9500DF EFI steps up with 7.5 kW continuous and 9.5 kW peak on gasoline. It also runs on propane and uses electronic fuel injection.
$1,360.00