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DuroStar DS4850EH - 4850 Watt Dual Fuel Portable Generator

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As ecological footprint becomes more critical, this 4,850-watt portable generator allows you to make an impact using innovative Dual Fuel Technology to run using gasoline and propane, with the latter being a clean-burning fuel source that produces 50% lower carbon emissions whilst being cheaper.

Push the boundaries of off-the-grid capabilities with the DuroStar DS4850EH. This 122lbs unit is perfect for camping trips and job sites thanks to a compact and portable design.

Capable of sustaining an impressive 3,850 watts of running power, the DuroStar DS4850EH offers a reliable and trustworthy solution to your needs, including charging external batteries and powering high-amperage power tools and small and large appliances.

While this dual-fuel portable generator focuses on providing power on the go, it does not compromise runtime. On a full 4-gallon fuel tank, this unit can last for up to 10 hours of ongoing use at half load, making it small enough to be easily relocated thanks to foldable handles and solid tires, but also capable enough to power your appliances with peace of mind.

Key DuroStar DS4850EH Features:

  • In-house DuroStar Engine: Geared for performance, the 4,850-watt portable generator ensures you’re one step ahead of your needs, whether you’re on a mission or simply enjoying the moment.
  • Dual Fuel Technology: By clever design, the DS4850EH uses Dual-Fuel capabilities to run on gasoline and propane, allowing you to reduce toxic emissions by 50% for a safer environment and cheaper alternative.
  • 10+ Hours of Runtime: This dual-fuel portable generator ensures you can count on it when it matters by delivering power for up to 10 hours at half load, and a remarkable 23 hours at low load.
  • Heavy-grade Build: Protected by metallic construction and heavy-duty frames, the DuroStar DS4850EH guarantees years of resistance against harsh weather conditions whilst remaining reasonably light.
  • EPA and CARB-Approved: To reduce health hazards, this dual-fuel portable generator follows strict environmental guidelines. As a result, it produces far lower carbon emissions.

  • DS4850EH Specifications:


    • Peak Watts: 4,850
    • Running Watts: 3,850
    • Peak Amps @120V: 40.4
    • Running Amps @120V: 32.1
    • Peak Amps @240V: 20.2
    • Running Amps @240V: 16


    • Peak Watts: 4,608
    • Running Watts: 3,658
    • Peak Amps @120V: 38.4
    • Running Amps @120V: 30.5
    • Peak Amps @240V: 19.2
    • Running Amps @240V: 15.2


    • Amperage: 32.1A/16A (Gasoline), 30.5A/15.2A (Propane)
    • Voltage: AC: 120/240V 60 Hz, DC: 12V
    • Frequency: 60Hz
    • Engine Size: 210cc
    • Engine Type: 4-Cycle Air-Cooled Spark-Ignition
    • Engine Speed: 3600RPM
    • Fuel Type: Dual Fuel (gasoline/propane)
    • Fuel Tank Capacity: 4 Gallons


    • Runtime: (Gasoline) at 50% Load: 10 Hours, (Propane) at 50% Load: 9 Hours
    • Start Type: Rocker Switch
    • Volume Level: 69dB
    • EPA Certified: Yes
    • CARB Certified: Yes
    • CSA Certified: No
    • Product Dimensions: 25"L x 24" W x 21" H
    • Product Weight: 132 Lbs

    DuroStar Power

    Packed into a compact size, the 210cc engine is capable of pushing 3,850 watts of running power, accommodating heavy use when powering heavy-duty power tools, and automatically lowering its speeds when it detects it’s not being used in order to save fuel and money through idle control.

    As a standard in DuroStar generators, the DS4850EH is equipped with 100% copper windings to improve heat dissipation. While conventional aluminum windings quickly overheat, damaging the unit over time, copper is a superior heat conductor that efficiently scatters heat and keeps the unit intact for a long time.

    Dual Fuel Technology

    Providing freedom of choice, convenience, and safer use, the DS4850EH uses Dual Fuel Technology to power its engine using both gasoline and propane. This is especially relevant since propane emits far lower carbon emissions and doesn’t need to be warmed up to start the engine. This makes this unit perfect for homeowners, professionals, and camping enthusiasts who plan on using the unit in cold locations or weather.

    At 50% load, the 4,850-watt portable generator scores up to 10 hours of continuous use while gas-powered, and 9 hours while using propane to make sure you’re focused on what’s truly important to you.

    The side-mounted power panel includes a fuel input switch that allows you to choose which fuel to use and being producing power in seconds.

    We sell a wide range of generators with dual fuel tech here.

    EPA and CARB-Approved

    By following a strict set of directives regarding carbon emissions, the DS4850EH remains safe to use thanks to reduced emissions of toxic fumes and unhealthy particles.

    The Environmental Protection Agency (EPA) and California Air Resources Board (CARB) set these guidelines to control toxic emissions and air pollution. Since the DS4850EH is both EPA and CARB-approved, it provides a safer and healthier environment for users in close proximity.

    Tough and Reliable

    Built using full metal construction and sturdy frames, the 4,850-watt portable generator can handle quite a bit of roughing up, which is inevitable. This dual-fuel unit is resistant to harsh weather conditions as well in order to provide you with years of reliability and peace of mind.

    To complement its compact build, the 122lbs portable generator features a convenient set of foldable handles that allow you to easily relocate and move around, while semi-solid tires provide greater grip and an easier time moving through rough terrain. In addition, they never run flat.

    Fully Loaded Power Panel

    Built for maximum compatibility, the DS4850EH features multiple outlets to allow for different uses. For instance, the power panel includes an L14-30R receptacle, making the unit transfer switch-ready. This means that you can directly plug the unit into your home breaker box and immediately power your household using the rocket switch or recoil mechanism.

    In addition, a circuit breaker is capable of shutting the engine down in case of overload while the low oil shutoff does so when it’s running low on oil. Besides that, the fully featured power panel includes an oil gauge that allows you to quickly get information about current use.

    Benefits of Using Propane

    While fossil fuels produce roughly 5% more power, they also emit disproportionate amounts of toxic emissions. Opting for a clean-burning fuel source such as propane yields multiple benefits:

  • Easy Start: Without the need for warming up, propane immediately powers the engine, making it an ideal alternative in cold locations or weather.
  • Cheaper Alternative: Found in home centers, outdoor stores, and gas stations, propane is cheaper and doesn’t need power to be transported from one container to another, unlike gasoline.
  • Spill-free: Avoid the inevitable spilling when pouring gasoline into the fuel tank. Connect the engine directly using a propane hose and begin producing power.
  • Clean Fuel: By burning clean, propane leaves no residue on the engine parts, meaning you don’t have to clean them after use.
  • Lower Toxic Emissions: While powered by a green fuel such as propane, the DuroStar DS4850EH emits 50% lower carbon emissions, providing safety and peace of mind.
  • Extended Shelf Time: Unlike fossil fuels that quickly degrade over time, propane doesn’t require expensive stabilizers to keep it from going bad and can be stored for up to 30 years.