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Compare Generators Side-by-Side

Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.

  • Briggs & Stratton 30728 Storm Responder
  • Generac #7680 GP6500
  • Model 30728 Storm Responder
    Model 30728 Storm Responder

    Briggs & Stratton 6,250W Gas Generator

    6250W
    Running
    0 dB
    Noise
    View details
  • No image
    Model #7680 GP6500

    Generac 6,500W Gas Generator

    6500W
    Running
    0 dB
    Noise
    View details
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationBriggs & Stratton 30728 Storm ResponderGenerac #7680 GP6500
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
6250 W
Winner: Winner: 6500 W
Starting watts
Winner: Winner: 8500 W
8125 W
Noise (lower limit)
0 dB
0 dB
Weight
210 lbs
Winner: Winner: 172 lbs
Run time @50% load
Winner: Winner: 11 h
10.5 h
Run time @25% load
Not available—
Not available—
Fuel tank
7.5 gal
6.9 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
28 x 27 x 28
27.2 x 27 x 26.5
Electrical
Voltage (AC)
120/240
120/240V 60 Hz
Voltage (DC)
Not available—
Not available—
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available—
20 %
Engine
Engine
Briggs & Stratton®
Generac OHV 4-stroke 389 cc
Alternator
Not available—
Not available—
Starting system
Recoil
Recoil
Warranty
Warranty
2 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
6250 W
6500 W
Starting watts
8500 W
8125 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
11 h
10.5 h
Run time @25% load
Not available—
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
false
Compliance
ANSI/PGMA G300-2018
Not available—
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
true
true
UPC
11675307288
696471075120
Core / High-priority specs
Running Watts (Gasoline)
6250
6500
Starting Watts (Gasoline)
8500
8125
Runtime @ 50% Load (Gasoline)
11
10.5
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R)
Not available—
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
1850 Series™ OHV Engine
OHV 4-stroke
Engine Displacement
420
389
Engine Oil Type
Not available—
10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
11
10.5
Controls & display
Display Type
StatStation™ Digital Display
Not available—
Idle Control System
No
Not available—
Safety & compliance
Overload Protection System
Low oil and overload protection; CO monitoring
Not available—
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Mobility Components
10" Never Go Flat Wheels
Not available—
Starting Components
Recoil
Not available—
Documentation
operator's manual or illustrated parts list
Not available—
Included Accessories
Extension cord and wheel kit
Oil, funnel, and wheel kit
Warranty & identification
Residential Warranty
2
Not available—
Commercial Warranty
0.25
3
Part Number
030728
Not available—
Additional specs
Summary
The Briggs & Stratton 30728 Storm Responder is a 6250-watt gasoline generator built for homeowners and job sites that need sustained power for essential appliances and tools. With 8500 peak watts, it can start large loads like air compressors and refrigerators that draw high inrush current. The 7.5-gallon fuel tank delivers 11 hours of runtime at half load, meaning users can run the unit through a full workday or overnight without refueling. This is a stationary-leaning portable unit, not a grab-and-go machine.
The Generac #7680 GP6500 is a 6500-watt gasoline generator built for job sites and backup power scenarios where sustained mid-range loads matter. Its 8125-watt peak capacity handles motor startup surges, making it suitable for running air compressors, circular saws, and multiple tools simultaneously on a construction site or powering essential home systems during outages.
  • Most Powerful
    Generac #7680 GP6500
    6500W running
  • Quietest
    dB
  • Longest Runtime
    Briggs & Stratton 30728 Storm Responder
    11h at 50% load
Where to buy
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Briggs & Stratton 30728 Storm Responder
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Generac #7680 GP6500
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