Compare Generators Side-by-Side

Generator

Generator

6500 W

211.6 lbs

14 h

14.4 h

120/240V 60 Hz

120/240

Briggs & Stratton OHV 4-stroke 306 cc

420 cc OHV 4-stroke

Recoil

Recoil, Electric, Remote

2 years

3 years

6500 W

9500 W

14 h

14.4 h

6750 W

EPA, ANSI/PGMA G300-2023

CARB, EPA, ANSI/PGMA G300-2023

11675307615

5000

7500

6500

9500

10

9.6

10.8

60

60

OHV 4-stroke

OHV 4-stroke

SAE10W30

14

14.4

Low oil and overload protection, CO monitoring

Low oil and overload protection

Yes

Oil and funnel

Oil, funnel, tool kit, key fob, propane hose, battery, and wheel kit

2

3

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.