Compare Generators Side-by-Side

Generator

Generator

6500 W

139 lbs

14 h

14.5 h

120/240V 60 Hz

120/240

Briggs & Stratton OHV 4-stroke 306 cc

322 cc OHV 4-stroke, cast iron sleeve.

Recoil

Recoil, Electric

2 years

3 years

6500 W

6850 W

14 h

14.5 h

4500 W

6250 W

9.5 h

EPA, ANSI/PGMA G300-2023

EPA, ANSI/PGMA G300-2023

11675307615

840876155714

5000

5500

4500

6250

10

9.5

60

60

OHV 4-stroke

OHV 4-stroke

cast iron sleeve

14

14.5

Low oil and overload protection, CO monitoring

Low oil and overload protection, CO monitoring

Oil and funnel

Oil, funnel, tool kit, propane hose, and battery

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 Firman WT05571 is a 5,500-watt tri-fuel generator that runs on gasoline, propane, or natural gas. On gasoline, it delivers 6,850 starting watts and 5,500 running watts, enough to power a full home electrical panel during an outage or run multiple job site tools simultaneously. On propane, output drops to 6,250 starting and 5,000 running watts. On natural gas, it falls to 5,500 starting and 4,500 running watts. This fuel flexibility means users can switch between sources based on availability, cost, or storage preference without buying multiple generators. The tri-fuel capability makes this unit valuable for homeowners in regions with natural gas infrastructure, RV owners who can refill propane at any campground, and contractors who need to adapt to job site fuel availability. The 3 percent THD rating protects laptops, televisions, and other sensitive electronics from voltage spikes that damage circuits. At 67 decibels, the noise level sits between a typical conversation and heavy traffic, making it suitable for residential neighborhoods but audible enough that neighbors will know it is running.