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| Specification | Briggs & Stratton 30761 Q6500 QuietPower | Cummins Onan P9500DF EFI |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Dual-Fuel |
| Inverter | Yes | No |
| Parallel capable | No | No |
| RV ready | No | No |
| Running watts | 5000 W | Winner: Winner: 7500 W |
| Starting watts | 6500 W | Winner: Winner: 9500 W |
| Noise (lower limit) | Winner: Winner: 66 dB | 74 dB |
| Weight | Winner: Winner: 139 lbs | 211.6 lbs |
| Run time @50% load | Winner: Winner: 10 h | 9.6 h |
| Run time @25% load | 14 h | 14.4 h |
| Fuel tank | 5 gal | 6.6 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 24.8 x 21.2 x 21.5 | 27.3 x 20.6 x 22.6 |
| Electrical | ||
| Voltage (AC) | 120/240V 60 Hz | 120/240 |
| Voltage (DC) | 5V | 5 |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <3% % | 23 % |
| Engine | ||
| Engine | Briggs & Stratton OHV 4-stroke 306 cc | 420 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 2 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 5000 W | 7500 W |
| Starting watts | 6500 W | 9500 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 | 10 h | 9.6 h |
| Run time @25% load | 14 h | 14.4 h |
| Propane | Not available | Not available |
| Running watts | Not available | 6750 W |
| Starting watts | Not available | 8550 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 | Not available | Not available |
| Run time @25% load | Not available | 10.8 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | false |
| Compliance | EPA, ANSI/PGMA G300-2023 | CARB, EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Bonded to frame | true |
| UPC | 11675307615 | Not available |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 5000 | 7500 |
| Running Watts (Propane) | Not available | 6750 |
| Starting Watts (Gasoline) | 6500 | 9500 |
| Starting Watts (Propane) | Not available | 8550 |
| Runtime @ 50% Load (Gasoline) | 10 | 9.6 |
| Runtime @ 25% Load (Gasoline) | 14 | 14.4 |
| Runtime @ 25% Load (Propane) | Not available | 10.8 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R) | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 306 | 420 |
| Engine Oil Type | Not available | SAE10W30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 14 | 14.4 |
| Runtime @ 50% Load (Gasoline) | 10 | 9.6 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Mobility Components | Not available | Yes |
| Starting Components | Oil and funnel | Not available |
| Included Accessories | Oil and funnel | Oil, funnel, tool kit, key fob, propane hose, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 2 | 3 |
| Part Number | 30761 | A075C509 |
| Additional specs | ||
| Summary | The Briggs & Stratton 30761 Q6500 QuietPower is a 5,000-watt inverter generator built for homeowners and outdoor users who need extended runtime without excessive noise. With 6,500 peak watts, this unit can start larger appliances like refrigerators and air conditioning units, then sustain 5,000 watts of continuous power for essential household devices, tools, and camping equipment. The inverter technology keeps total harmonic distortion below 3%, meaning laptops, phones, and televisions stay protected from power surges that would damage their circuits.
At 66 decibels, the Q6500 operates quietly enough for residential neighborhoods and campgrounds where noise restrictions matter. The 5-gallon fuel tank stretches to 14 hours of runtime at 25% load, reducing refueling interruptions during extended outages or weekend trips. This combination positions the unit as a middle-ground option: more power than portable inverters, quieter than traditional open-frame generators, and practical for users who prioritize both output and operational peace. | The Cummins Onan P9500DF EFI is a 7,500-watt dual-fuel generator built for users who need sustained power across multiple load types. On gasoline, it delivers 7,500 running watts and 9,500 peak watts. On propane, it drops to 6,750 running watts and 8,550 peak watts, which means propane users sacrifice roughly 10 percent of output but gain extended storage life and cleaner emissions. The electronic fuel injection engine handles high-altitude operation up to 13,123 feet without modification, making it viable for mountain jobsites, remote cabins, and RV camps where carbureted engines would struggle. At 211.6 pounds with an included wheel kit, this generator demands stationary placement or two-person handling, but the 6.6-gallon fuel tank stretches runtime to 14.4 hours at 25 percent load on gasoline. This is a workhorse for contractors, emergency backup, and off-grid scenarios where fuel flexibility and durability matter more than portability. |
