Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
| Specification | Cummins Onan P4500i | VEVOR R2000iSP |
|---|---|---|
| General | ||
| Product type | Generator | Not available |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | No |
| Parallel capable | Yes | No |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 3700 W | 1800 W |
| Starting watts | Winner: Winner: 4500 W | 2900 W |
| Noise (lower limit) | Winner: Winner: 52 dB | 67 dB |
| Weight | 98 lbs | Winner: Winner: 48.5 lbs |
| Run time @50% load | Winner: Winner: 15 h | 6 h |
| Run time @25% load | 18 h | Not available |
| Fuel tank | 3.4 gal | 1.1 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 24.5 x 18.3 x 20.5 | 19.6 x 11.4 x 18.1 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | No | No |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | No |
| THD | 3 % | Not available |
| Engine | ||
| Engine | 224 cc Ducar OHV 4-stroke | Not available |
| Alternator | Not available | Not available |
| Starting system | Recoil; Electric; Remote | Not available |
| Warranty | ||
| Warranty | 3 years | Not available |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3700 W | 1800 W |
| Starting watts | 4500 W | 2900 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 | 15 h | 6 h |
| Run time @25% load | 18 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | Not available |
| Compliance | CARB, EPA | Not available |
| Security | Not available | Not available |
| Spark arrestor | Yes | No |
| Neutral | Floating | Not available |
| UPC | 690781007925 | Not available |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3700 | 1800 |
| Starting Watts (Gasoline) | 4500 | 2900 |
| Runtime @ 50% Load (Gasoline) | 15 | 6 |
| Runtime @ 25% Load (Gasoline) | 18 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) | Not available |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Ducar OHV 4-stroke | Not available |
| Engine Displacement | 224 | 79.7 |
| Engine Oil Type | 10W30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 18 | Not available |
| Runtime @ 50% Load (Gasoline) | 15 | 6 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Overload protection |
| Low Oil Protection | Yes | No |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Included Accessories | Oil, funnel, tool kit, key fob, battery charger, and battery | Not available |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Part Number | A058U955 | R2000iSP |
| Additional specs | ||
| Summary | The Cummins Onan P4500i is a 3700-watt inverter generator built for users who need reliable power without the noise penalty. Its 4500-watt peak capacity handles startup surges for air conditioners, power tools, and RV air conditioning units. The gasoline engine runs clean enough for sensitive electronics like laptops and phones, thanks to a 3 percent THD rating that protects against voltage spikes. This unit bridges the gap between portable camping generators and stationary backup power, making it useful for RV owners, homeowners facing extended outages, and contractors working near occupied spaces. | The VEVOR R2000iSP is a 1,800W gasoline inverter generator built for portability and selective-load backup. Its 2,900W starting surge handles refrigerators, window AC units, and power tools, while the 1,800W continuous rating anchors everyday use like camping, tailgating, and short-duration home outages. At 48.5 lbs and 19.6 x 11.4 x 18.1 inches, it prioritizes grab-and-go convenience over extended runtime. |
