Compare Generators Side-by-Side

Generator

Generator

6500 W

178 lbs

14 h

120/240V 60 Hz

120/240

Briggs & Stratton OHV 4-stroke 306 cc

300 cc OHV 4-stroke

Recoil

Recoil

2 years

2 years

6500 W

6875 W

14 h

EPA, ANSI/PGMA G300-2023

CARB, EPA

11675307615

815683020036

5000

5500

10

15

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)

60

60

OHV 4-stroke

OHV 4-stroke

SAE 30 or 10W-30

14

Low oil and overload protection, CO monitoring

Low oil and overload protection

Oil and funnel

2

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 Cat RP5500 is a 5500-watt gasoline generator built for homeowners, contractors, and outdoor enthusiasts who need reliable backup power without the complexity of larger units. This wattage tier handles most household circuits simultaneously, meaning you can run a refrigerator, well pump, and power tools at the same time, but not your entire home's air conditioning system. The 6875-watt peak capacity gives it the muscle to start high-inrush devices like compressors and sump pumps without stalling. Because the RP5500 runs on gasoline, fuel is available at any gas station, eliminating the supply chain friction of propane or diesel models. The 7.9-gallon tank paired with 15-hour runtime at half load means you refuel roughly once per day under typical use, not every few hours.