All GeneratorsDealsCompareMy PicksGenerator Finder
All GeneratorsDealsCompareMy PicksGenerator Finder
  • Guides
  • Blog
  • FAQ
  • Rankings

Helping you find the right generator for your needs with objective specs and clear comparisons.

Categories

  • Quiet Generators
  • Inverter Generators
  • Dual-Fuel
  • Home Backup
  • Portable
  • All Brands

Resources

  • Rankings
  • Compare Generators
  • Generator Finder
  • Deals
  • Buying Guides
  • Blog
  • FAQ
  • About Us

Legal

  • Terms of Service
  • Privacy Policy
  • DMCA
  • Disclosures

Disclosure

RightGenerator is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no cost to you.

© 2026 RightGenerator. All rights reserved.

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 30814 P4500 PowerSmart
  • Aceup Energy AI4000DS
  • Model 30814 P4500 PowerSmart
    Model 30814 P4500 PowerSmart

    Briggs & Stratton 3,700W Gas Generator

    3700W
    Running
    60 dB
    Noise
    View details
  • Model AI4000DS
    Model AI4000DS

    Aceup Energy 3,200W Generator

    3200W
    Running
    55 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 PowerSmartAceup Energy AI4000DS
General
Product type
Generator
Not available—
Fuel
Gasoline
Not available—
InverterYesNo
Parallel capableNoYes
RV readyNoNo
Running watts
Winner: Winner: 3700 W
3200 W
Starting watts
Winner: Winner: 4500 W
4000 W
Noise (lower limit)
60 dB
Winner: Winner: 55 dB
Weight
Winner: Winner: 104 lbs
Not available—
Run time @50% load
Not available—
Winner: Winner: 8 h
Run time @25% load
16 h
Not available—
Fuel tank
3.5 gal
1.32 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
24.5 x 17.6 x 20.36
Not available—
Electrical
Voltage (AC)
120
120V
Voltage (DC)
5
12V
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
3 %
Not available—
Engine
Engine
Briggs & Stratton OHV 4-stroke 224 cc
149cc 4-stroke OHV engine
Alternator
Not available—
Not available—
Starting system
Recoil, Electric, Remote
Not available—
Warranty
Warranty
3 years
2 years
Power by fuel
GasolineNot available—Not available—
Running watts
3700 W
3200 W
Starting watts
4500 W
4000 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—
Not available—
Run time @25% load
16 h
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
true
Compliance
CARB, EPA
EPA compliant
Security
Not available—
Not available—
Spark arrestorYesNo
Neutral
Floating
Not available—
UPC
11675308148
Not available—
Core / High-priority specs
Running Watts (Gasoline)
3700
3200
Starting Watts (Gasoline)
4500
4000
Runtime @ 25% Load (Gasoline)
16
Not available—
AC Outlet Types
2x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R)
One 20A outlet, one L5-30R Twist-Lock receptacle
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Briggs & Stratton OHV 4-stroke
4-stroke OHV
Engine Displacement
224
149
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
16
Not available—
Controls & display
Display Type
Digital
Intelligent gauge
Idle Control System
Not available—
Economic mode
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Not available—
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Recoil, Electric, Remote
Not available—
Included Accessories
Oil, funnel, key fob, and battery
Oil funnel * 2; A bottle of Oil; Spark plug wrench
Warranty & identification
Residential Warranty
Not available—
2
Commercial Warranty
3
Not available—
Part Number
30814
SKU ‎AI4000s
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 Aceup Energy AI4000DS is a 3200 watt rated gasoline generator with a peak output of 4000 watts, featuring a 149cc 4-stroke OHV engine and EPA compliance.
  • Most Powerful
    Briggs & Stratton 30814 P4500 PowerSmart
    3700W running
  • Quietest
    Aceup Energy AI4000DS
    55 dB
  • Longest Runtime
    Aceup Energy AI4000DS
    8h at 50% load
Where to buy
Prices can change. We update these automatically.
Briggs & Stratton 30814 P4500 PowerSmart
Store links
No links yet.
Aceup Energy AI4000DS
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.