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WEN 56450iX vs Briggs & Stratton 30814 P4500 PowerSmart

WEN 56450iX vs Briggs & Stratton 30814 P4500 PowerSmart

Compare two 4500W-class inverter generators: WEN is slightly quieter and lighter, Briggs runs longer at 25% load for extended camping or backup.

  • Briggs & Stratton 30814 P4500 PowerSmart
  • WEN 56450iX

Comparison Overview

The biggest real-world difference here is runtime information and how you plan to use the generator for long stretches. The Briggs & Stratton 30814 P4500 PowerSmart lists 16 hours at 25% load, which is a strong fit for overnight camping, tailgates, or stretching fuel during light home backup. The WEN 56450iX lists 8.5 hours at 50% load, which is more representative of moderate use, like running a fridge plus a few essentials.

Power output is very close. WEN delivers 3500 running watts and 4500 starting watts, while Briggs & Stratton delivers 3700 running watts and 4500 starting watts. In practice, both can handle common surge loads (like a refrigerator compressor starting), and the Briggs has a small edge for sustained loads.

Noise and portability are also similar. WEN is rated 58 dB versus 60 dB for Briggs, and it is lighter at 99.2 lb versus 104 lb. Both are inverter generators (better for sensitive electronics) and both include a 3-year warranty. Choose WEN if you value slightly lower noise and weight, choose Briggs if long, light-load run time is the priority.

Key takeaways

  • WEN 56450iX runs at 58 dB and weighs 99.2 lb.
  • Briggs & Stratton P4500 delivers 3700 running watts and 4500 starting watts.
  • WEN 56450iX provides 3500 running watts with 4500 starting watts.
  • Briggs & Stratton P4500 lists 16 hours runtime at 25% load.
  • Both are gasoline inverter generators with a 3-year warranty.

Best use cases

Choose the WEN 56450iX if you want a slightly more portable, slightly quieter inverter generator for mixed-use weekends and occasional home needs. At 99.2 lb and 58 dB, it is a bit easier to live with when you are moving it in and out of a garage, loading it for a trip, or placing it farther from camp to keep things comfortable. Its 3500 running watts and 4500 starting watts are well suited to practical “essentials” power, such as a refrigerator, lights, device charging, a TV, and a fan, as long as you are mindful about stacking multiple high-draw appliances at once. The tradeoff is that the provided runtime figure is 8.5 hours at 50% load, so if your typical use is very light but very long (like overnight), you may need to refuel sooner than a model optimized for long, low-load operation.

Choose the Briggs & Stratton 30814 P4500 PowerSmart if your priority is stretching fuel during long, lighter-demand stretches, like camping weekends, tailgating all day, or keeping a fridge and a few small loads going through the night. Its published 16 hours at 25% load is the standout spec in this matchup, and its 3700 running watts gives a small cushion for sustained draw compared with WEN. The tradeoffs are modest: it is a bit heavier at 104 lb and a touch louder at 60 dB, which can matter if you move it frequently or are sensitive to noise. For RV-style use and electronics, both being inverter units is a plus, but your decision will mostly come down to runtime expectations versus portability.

Verdict & recommendation

If your priority is longer, low-load operation with fewer refueling stops, the Briggs & Stratton 30814 P4500 PowerSmart is the more compelling fit thanks to its 16-hour runtime at 25% load and slightly higher 3700 running watts. If your priority is easier handling and a bit less noise for closer-quarters use, the WEN 56450iX stands out at 58 dB and 99.2 lb, while still matching the same 4500 starting watts.

Both are gasoline inverter generators with a 3-year warranty, and both sit in the same practical power class for camping, RV support, and “essentials” home backup. Pick based on whether your typical day looks like long, light loads (favor Briggs) or moderate loads with more moving and setup (favor WEN).

Last updated February 23, 2026

  • Model 30814 P4500 PowerSmart
    Model 30814 P4500 PowerSmart

    Briggs & Stratton 3,700W Gas Generator

    3700W
    Running
    60 dB
    Noise
    View details
  • Model 56450iX
    Model 56450iX

    WEN 3,500W Gas Generator

    3500W
    Running
    58 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 30814 P4500 PowerSmartWEN 56450iX
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesYes
Parallel capableNoYes
RV readyNoYes
Running watts
Winner: Winner: 3700 W
3500 W
Starting watts
Winner: Winner: 4500 W
Winner: Winner: 4500 W
Noise (lower limit)
60 dB
Winner: Winner: 58 dB
Weight
104 lbs
Winner: Winner: 99.2 lbs
Run time @50% load
Not available
Winner: Winner: 8.5 h
Run time @25% load
16 h
Not available
Fuel tank
3.5 gal
2.2 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
24.5 x 17.6 x 20.36
23.2 x 18 x 20.1
Electrical
Voltage (AC)
120
120
Voltage (DC)
5
12
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesYes
THD
3 %
1.2 %
Engine
Engine
Briggs & Stratton OHV 4-stroke 224 cc
212 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric, Remote
Recoil
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
3700 W
3500 W
Starting watts
4500 W
4500 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
8.5 h
Run time @25% load
16 h
Not available
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
CARB, EPA
EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
Floating
UPC
11675308148
44459564508
Core / High-priority specs
Running Watts (Gasoline)
3700
3500
Starting Watts (Gasoline)
4500
4500
Runtime @ 50% Load (Gasoline)
Not available
8.5
Runtime @ 25% Load (Gasoline)
16
Not available
AC Outlet Types
2x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R)
1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Briggs & Stratton OHV 4-stroke
OHV 4-stroke
Engine Displacement
224
212
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
16
Not available
Runtime @ 50% Load (Gasoline)
Not available
8.5
Controls & display
Display Type
Digital
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection, CO monitoring
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Recoil, Electric, Remote
Funnel and tool kit
Included Accessories
Oil, funnel, key fob, and battery
Funnel and tool kit
Warranty & identification
Commercial Warranty
3
3
Part Number
30814
Not available
Additional specs
Summary
The Briggs & Stratton 30814 P4500 PowerSmart is a 3700-watt inverter generator built for users who need reliable backup power without the noise of traditional models. At 60 decibels, it runs quiet enough for residential neighborhoods and campgrounds, making it suitable for homeowners managing outages, campers extending trips, and outdoor enthusiasts who cannot tolerate generator noise. The 4500-watt peak output handles startup surges for larger appliances like air conditioning units or power tools, while the 3700-watt running capacity sustains continuous operation. With a 3.5-gallon fuel tank and 16-hour runtime at 25% load, users can power essential devices through a full night or longer without refueling. The inverter technology produces only 3% THD, which means laptops, smartphones, and other sensitive electronics charge safely without risk of voltage spikes or damage.
The WEN 56450iX is a super quiet 4500-watt RV-ready portable inverter generator equipped with fuel shut-off and a CO Watchdog sensor, designed to provide clean and reliable power for sensitive electronics.
  • Most Powerful
    Briggs & Stratton 30814 P4500 PowerSmart
    3700W running
  • Quietest
    WEN 56450iX
    58 dB
  • Longest Runtime
    WEN 56450iX
    8.5h at 50% load
Where to buy
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Briggs & Stratton 30814 P4500 PowerSmart
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WEN 56450iX
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