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

  • Briggs & Stratton 30758 P2400 PowerSmart
  • Generac #7705 GP15500EFI
  • Model 30758 P2400 PowerSmart
    Model 30758 P2400 PowerSmart

    Briggs & Stratton 1,800W Gas Generator

    1800W
    Running
    62 dB
    Noise
    View details
  • Model #7705 GP15500EFI
    Model #7705 GP15500EFI

    Generac 15,500W Gas Generator

    15500W
    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 30758 P2400 PowerSmartGenerac #7705 GP15500EFI
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesNo
Parallel capableYesNo
RV readyNoYes
Running watts
1800 W
Winner: Winner: 15500 W
Starting watts
2400 W
Winner: Winner: 19300 W
Noise (lower limit)
Winner: Winner: 62 dB
0 dB
Weight
Winner: Winner: 51 lbs
420 lbs
Run time @50% load
Not available
Winner: Winner: 11 h
Run time @25% load
8 h
Not available
Fuel tank
1 gal
14.2 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
20 x 12 x 17
58.5 x 30.9 x 36.5
Electrical
Voltage (AC)
120
120/240
Voltage (DC)
5
Not available
GFCI outletsNoYes
Covered outletsYesYes
Automatic Voltage RegulationNoYes
THD
< 3% %
<5% %
Engine
Engine
79 cc OHV 4-stroke
Generac G-Force OVHI 4-stroke
Alternator
Not available
Not available
Starting system
Recoil
Electric
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
Not available
15500 W
Starting watts
2400 W
19300 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
11 h
Run time @25% load
8 h
Not available
Other
Data center
Not available
Not available
Indicators
true
false
Compliance
CARB, EPA, ANSI/PGMA G300-2023
EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
true
UPC
11675307585
696471083705
Core / High-priority specs
Running Watts (Gasoline)
Not available
15500
Starting Watts (Gasoline)
2400
19300
Runtime @ 50% Load (Gasoline)
Not available
11
Runtime @ 25% Load (Gasoline)
8
Not available
AC Outlet Types
1x Duplex 120V 20A (5-20R)
2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
G-Force OVHI 4-stroke
Engine Displacement
79
816
Engine Oil Type
Not available
10W-30 / SAE 30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
8
Not available
Runtime @ 50% Load (Gasoline)
Not available
11
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection, CO monitoring
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Included Accessories
Oil
Oil, battery, and wheel kit
Warranty & identification
Commercial Warranty
Not available
3
Part Number
30758
Not available
Additional specs
Summary
The Briggs & Stratton 30758 P2400 PowerSmart is an 1800-watt inverter generator built for users who need portable, clean power without the weight penalty. At 51 pounds, this unit sits at the intersection of serious capacity and genuine portability. It runs household essentials like refrigerators, power tools, and laptops simultaneously, but cannot power an entire home or heavy-duty job site equipment. The 79 cc OHV engine produces 2400 starting watts to handle motor inrush, then settles to 1800 running watts for sustained operation. This inverter's sub-3% THD output protects sensitive electronics from voltage spikes that damage laptops, phones, and medical devices. The gasoline fuel type means refueling at any gas station, and the 1-gallon tank with 8-hour runtime at 25% load creates a predictable refueling cycle for day-long use. Three-year warranty coverage backs the entire package, making this a low-risk entry point for homeowners, campers, and emergency preparedness planners.
The Generac #7705 GP15500EFI is a 15,500-watt gasoline generator built for whole-house backup and RV power. Electronic Fuel Injection adjusts fuel delivery based on load, meaning the engine burns only what it needs rather than running at a fixed rate. At this wattage, it can run central air conditioning, a well pump, kitchen appliances, and multiple lighting circuits simultaneously, functioning as a realistic alternative to a permanently installed standby system without the installation cost or natural gas hookup.
  • Most Powerful
    Generac #7705 GP15500EFI
    15500W running
  • Quietest
    Briggs & Stratton 30758 P2400 PowerSmart
    62 dB
  • Longest Runtime
    Generac #7705 GP15500EFI
    11h at 50% load
Where to buy
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Briggs & Stratton 30758 P2400 PowerSmart
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Generac #7705 GP15500EFI
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