Onan P2500i Portable Inverter Generator – Reliable, Lightweight Power

The Onan P2500i is your ultimate portable power solution, offering 2500 peak watts and 2200 running watts. Perfect for outdoor activities, RV trips, or emergency backup, this inverter generator ensures clean and stable power for your sensitive electronics. Weighing just 48 lbs, it's compact and easy to transport with a built-in handle. Equipped with a 3.4 HP OHV 4-stroke engine, USB ports, and low-oil shutdown, the P2500i is engineered for efficiency, durability, and quiet operation at just 52 dBA.

Bonus: Parallel capability allows you to connect an additional Onan generator for even more power.

Onan P2500i Inverter Generator Features 

•Built-in carry handle for easy transportation
•Parallel capable with another P2500 inverter generator (cable sold separately)
•Two 5V USB ports for charging sensitive electronics such as phones or tablets
•Rubber outlet dust covers
•Dependable 3.4 HP 98cc OHV 4-Stroke engine
•Rubber mat on top for storing electronic devices such as phones while charging
•3-Year Warranty

Part Number A058U944

Gasoline Peak Watts 2500

Gasoline Running Watts 2200

Peak Amps at 120V 20.8 amps

Running Amps at 120V 18.3 amps

AC Voltage 120 Volts

DC Voltage 5 Volts

AC Frequency 60 Hz

Parallel Capable Yes

Engine Horse Power (HP) 3.4 HP

Total Harmonic Distortion (THD) <3%

Automatic Voltage Regulator (AVR) Yes

Starting System Recoil

Battery No

Engine Displacement 98cc

Engine Brand Ducar

Engine Type OHV 4 Stroke

Engine Speed Variable

Engine RPM Max 5500

Gasoline Fuel Gauge Yes

Operational Volume As low as 52 dBA

Spark Plug (included) Torch E6RTC

Carburetor Kit Required to Operate at Altitude Yes, above 2000ft

Economy Mode Switch Yes

Built-in Inverter Yes

Engine Lubrication Splash

Recommended Oil SAE 10W30

Oil Bottle Size (included) .37 qt. (11.8 oz.)

Oil Capacity (Quarts/Ounces) .37 qt. (11.8 oz.)

Low Oil Shutdown Automatic

Fuel Type Unleaded Gasoline, 10% Ethanol or less

Fuel Shut Off Manual

Fuel Tank Material Steel

Fuel Tank Capacity (Gallons/Liters) 1 gal. (3.8 L)

Run Time at %25 Load (hrs.) 10 hrs.

Run Time at %50 Load (hrs.) 8 hrs.

Choke type Manual Choke

Location Control Panel

AC Outlets (1) Duplex 120V 20A (5-20R)

DC Outlets (2)

5V USB ports (1)

12V 8A outlet

Ground Floating Neutral

Covered Outlets Yes

Transfer Switch Ready No

GFCI Outlets No

LED Data Center Yes

Overload Protection (circuit breaker) Yes

Handle Style Single, molded in case

Wheel Kit No

Emissions EPA, CARB

Canada CSA Compliant Yes

Spark Arrestor Yes

Residential Warranty 3 Years

Commercial Warranty 1 Year

Assembled Length in. (mm) 19.75 in. (501.65 mm)

Assembled Width in. (mm) 10.5 in. (266.7 mm)

Assembled Height in. (mm) 18.25 in. (463.55 mm)

Carton Length in. (mm) 21.5 in. (546 mm)

Carton Width in. (mm) 12.75 in. (323.85 mm)

Carton Height in. (mm) 18.75 in. (490 mm)

Dry Unit Weight lb. (kg) 48 lb. (21 kg)

Shipping Weight Ib. (kg) 58 lb. (24 kg)