Compare Generators Side-by-Side
Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
- Cummins Onan P2500i
- Energizer eZV4800
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
| Specification | Cummins Onan P2500i | Energizer eZV4800 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | No |
| RV ready | No | No |
| Running watts | 2200 W | Winner: Winner: 3600 W |
| Starting watts | 2500 W | Winner: Winner: 4800 W |
| Noise (lower limit) | Winner: Winner: 52 dB | 70 dB |
| Weight | Winner: Winner: 48 lbs | 78 lbs |
| Run time @50% load | 8 h | Winner: Winner: 11.8 h |
| Run time @25% load | 10 h | 16.2 h |
| Fuel tank | 1 gal | 3.2 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 19.8 x 10.5 x 18.3 | 18 x 17 x 21 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 12 | 12 |
| GFCI outlets | No | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <3% % | Not available |
| Engine | ||
| Engine | 98 cc Ducar OHV 4-stroke engine | 223 cc 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 2200 W | 3600 W |
| Starting watts | 2500 W | 4800 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | 8 h | 11.8 h |
| Run time @25% load | 10 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA | N/A |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Floating |
| UPC | 690781007918 | 628963400837 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 2200 | 3600 |
| Starting Watts (Gasoline) | 2500 | 4800 |
| Runtime @ 50% Load (Gasoline) | 8 | 11.8 |
| Runtime @ 25% Load (Gasoline) | 10 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R) | 1x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Ducar OHV 4-stroke | 4-stroke |
| Engine Displacement | 98 | 223 |
| Engine Oil Type | SAE 10W30 | SAE 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 10 | Not available |
| Runtime @ 50% Load (Gasoline) | 8 | 11.8 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | No |
| Included equipment | ||
| Included Accessories | Oil, funnel, and tool kit | Not available |
| Warranty & identification | ||
| Commercial Warranty | Not available | 3 |
| Part Number | Not available | INVEZV4800AD |
| Additional specs | ||
| Summary | The Cummins Onan P2500i is a 2200-watt inverter generator built for users who need portable power without sacrificing runtime or noise control. At 48 pounds and measuring 19.8 by 10.5 by 18.3 inches, this unit bridges the gap between true portability and practical capacity. It can run a microwave, small refrigerator, or circular saw continuously, making it suitable for camping trips, job sites, tailgating, and emergency backup. The 1-gallon fuel tank delivers 10 hours at 25 percent load and 8 hours at 50 percent load, meaning most users refuel once per day rather than multiple times.
The inverter topology produces clean power with less than 3 percent THD, which protects laptops, phone chargers, and sensitive electronics from voltage spikes. Cummins backs this unit with a 3-year warranty, longer than the 2.4-year average for comparable inverter generators. The 52 dBA noise level sits between a normal conversation and light traffic, allowing operation in noise-restricted campgrounds and residential neighborhoods without drawing complaints. | The Energizer eZV4800 is a 3,600-watt inverter generator built on a 223cc 4-stroke engine. This wattage class handles mid-range household loads: refrigerators, window air conditioners, power tools, and multiple devices simultaneously. The 78-pound weight and 18 x 17 x 21 inch footprint make it portable enough for job sites and camping trips, yet substantial enough to deliver real power without constant refueling. Gasoline fuel means no special storage concerns, and the inverter output protects laptops, phones, and televisions from voltage spikes. |
- Most PowerfulEnergizer eZV48003600W running
- QuietestCummins Onan P2500i52 dB
- Longest RuntimeEnergizer eZV480011.8h at 50% load
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Cummins Onan P2500i
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Energizer eZV4800
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