The 10 best 4000W Generator

Pramac

Pramac PMi 4500 Inverter Petrol Generator - 4200W Max Power, Electric Start, Quiet Operation, Remote Control, ATS Compatible, Portable with Wheel Kit, Dual UK Sockets

• ⇅ No. 1 in the comparison · Score 10/10 (Excellent)
• ↗ Now £649.00
• ● Auf Lager – In stock

HIGH PERFORMANCE & SAFE POWER: Delivers up to 4200 Watts (3800W Rated) of reliable power. Equipped with advanced Inverter Technology, it ensures a stable, clean energy supply, making it 100% safe to power and charge sensitive electronics like laptops, smartphones, and TVs without risk of damage.

Technical details

Manufacturer

Pr Industrial srl

Weight

42.50 kg

Dimensions

57.9 × 42.2 × 50.0 cm

Product features

• HIGH PERFORMANCE & SAFE POWER: Delivers up to 4200 Watts (3800W Rated) of reliable power. Equipped with advanced Inverter Technology, it ensures a stable, clean energy supply, making it 100% safe to power and charge sensitive electronics like laptops, smartphones, and TVs without risk of damage.
• NATIVE UK SOCKETS: Fitted with 2x standard 230V UK 3-Pin sockets directly on the control panel, ready to power your British appliances out of the box without the need for unreliable travel adaptors.
• EXCLUSIVE '3XTRA' CONTROL: The PMi 4500 stands out with premium control features. It includes a Remote Control for convenient operation from a distance, a 2-wire start system, and an ATS (Automatic Transfer Switch) connector, making it ideal as a dependable home backup power solution during outages.
• QUIET & FUEL EFFICIENT: Powered by a robust Pramac Stage V OHV engine with a 12-litre petrol tank. Features an 'Economy Mode' that automatically adjusts engine speed to match the load, providing excellent fuel economy (up to 9.7 hours of runtime at 50% load) and reducing noise levels to just 68 dB(A) at 7 meters.
• PORTABLE & EASY TO USE: Designed for the outdoors, camping, and emergency use. It features a hassle-free Electric Start button (with recoil backup), a smart digital display (Voltage, Frequency, Running time), and a compact design with an integrated wheel kit and folding handle for effortless transportation.

maXpeedingrods

maXpeedingrods 3300W Portable Inverter Generator Petrol Pure Sine Wave Silent Generator with 230V outlets, 12V/8.3A DC receptacle, USB outlets for Camping, RV Travel, Home, or Jobsites

• ⇅ No. 2 in the comparison · Score 9.6/10 (Excellent)
• ↗ Now £435.99 was £549.99
• ● Auf Lager – In stock

Provides reliable power for camping, RV travel, and job sites with quiet operation and multiple outlet options.

Technical details

Colour

Orange,black

Manufacturer

maXpeedingrods

Size

3300W

Quantity

1

Weight

21.00 kg

Dimensions

48.0 × 29.0 × 43.9 cm

Advantages

• The generator produces a maximum of 3300W, making it suitable for running various appliances simultaneously, including lighting systems and small home devices.
• It operates at a low noise level of 58 decibels in ECO mode, minimising disturbance for users and those nearby.
• With a runtime of up to 12 hours in ECO mode, it can provide a consistent power supply for extended periods.
• The inverter technology ensures clean power output, protecting sensitive electronics from potential damage.

Frequently asked questions

HYUNDAI

Hyundai 3200W / 3.2kW Petrol Inverter Generator, Pure Sine Wave Output, Lightweight, Quiet with Electric Start, 3 Year Warranty

• ⇅ No. 3 in the comparison · Score 9.4/10 (Very good)
• ↗ Now £629.99
• ● LEADTIME – Usually dispatched within 1 to 3 weeks

Pure Sine Wave Output: Safely powers sensitive electronics like TVs, laptops, and phones

Technical details

Colour

Blue

Manufacturer

Hyundai

Quantity

1

Weight

26.50 kg

Dimensions

47.0 × 34.0 × 55.1 cm

Product features

• Pure Sine Wave Output: Safely powers sensitive electronics like TVs, laptops, and phones
• Low-Noise Operation: Produces only 59dBA with under 75% load at 7 meters, ideal for quiet environments
• ECO Mode: Increases fuel efficiency, lowers noise, and extends engine lifespan
• Lightweight and Portable: Weighs just 26.5kg, easy to transport and store
• Built-In LCD Display: Monitors voltage, frequency, amps, and hours for safe usage

HYUNDAI

Hyundai 3.3kW / 3300W Petrol Inverter Generator, 3.0kW Continuous, Recoil Start, Pure Sine Wave, 16A Industrial Socket Low Noise Power for Caravans & Motorhomes

• ⇅ No. 4 in the comparison · Score 9.3/10 (Very good)
• ↗ Now £523.99
• ● Auf Lager – In stock

3.3kW Peak / 3.0kW Continuous Output – Mid-range inverter power ideal for larger caravans, motorhomes and off-grid leisure setups running fridges, lighting, TVs and device chargers together.

Technical details

Manufacturer

Hyundai

Quantity

1

Dimensions

28.4 × 46.0 × 49.0 cm

Product features

• 3.3kW Peak / 3.0kW Continuous Output – Mid-range inverter power ideal for larger caravans, motorhomes and off-grid leisure setups running fridges, lighting, TVs and device chargers together.
• Pure Sine Wave Safe Power – Clean, stable 230V inverter output protects laptops, televisions, games consoles and other sensitive electronics.
• Reliable 144cc 4-Stroke Engine – Air-cooled petrol engine with simple recoil start, designed for dependable seasonal and leisure use.
• 4L Fuel Tank with ECO Mode – Up to 6.3 hours at 10% load and 3.6 hours at 50% load; ECO mode reduces engine speed for better fuel efficiency and lower noise (67.6 dBA @ 7m).
• 16A Industrial Socket & Digital Meter – Includes 1x 16A blue socket, 12V DC outlet and 3-in-1 digital display for voltage, frequency and runtime monitoring, plus AC reset protection.

maXpeedingrods

maXpeedingrods 3500W Portable Inverter Generator Petrol Silent for Camping | 4 Stroke Sine Wave Generator, Compact and Lightweight for Camping, RV Travel,Home

• ⇅ No. 5 in the comparison · Score 9.3/10 (Very good)
• ↗ Now £419.99
• ● Auf Lager – In stock

【Multifunction Power Supplier】The MXR3800 4-Stroke OHV inverter generator produces 3500W peak watts and 3200W running watts, it is ideal for camping, festivals, tailgating, caravans and home power backup.

Technical details

Manufacturer

maXpeedingrods

Quantity

1

Weight

23.55 kg

Dimensions

51.1 × 33.3 × 48.5 cm

Product features

• 【Multifunction Power Supplier】The MXR3800 4-Stroke OHV inverter generator produces 3500W peak watts and 3200W running watts, it is ideal for camping, festivals, tailgating, caravans and home power backup.
• 【Low noise】When the generator is in ECO mode at 25% load and is 7m away from the generator, the noise level is 58 decibels.
• 【Portable and Lightweight】Thanks to its compact construction, this generator weighs 21 KG. Designed with a handle, it is extremely lightweight and easy to carry.
• 【Provide Clean Power】 It can provide safe, high-quality power for sensitive devices without affecting their service life. For example, it can directly charge mobile phones, laptops, cameras and other digital devices.
• 【Brand Warranty】Maxpeedingrods warrants all inverter generators against manufacturing defects under normal use for a period of 2 years from the date of retail purchase by the original end user ("Warranty Period") and provides free lifetime technical support and after-sales service

HYUNDAI

Hyundai 3.3kW / 3300W Petrol Open Frame Inverter Generator, Recoil Start, 3.0kW Continuous, 7.5L Long-Run Tank, Pure Sine Wave

• ⇅ No. 6 in the comparison · Score 9/10 (Very good)
• ↗ Now £299.99 was £314.99
• ● LEADTIME – Usually dispatched within 1 to 2 months

Provides reliable power for outdoor activities and emergencies, running quietly for extended periods with a generous fuel capacity.

Technical details

Manufacturer

Hyundai

Quantity

1

Weight

26.00 kg

Dimensions

47.0 × 38.1 × 43.4 cm

Advantages

• The 7.5L fuel tank allows for extended runtime, providing up to 14 hours of operation at low loads, which minimises the need for frequent refuelling.
• A peak output of 3.3kW and continuous output of 3.0kW makes it suitable for powering various appliances, including those used in caravans and motorhomes.
• The pure sine wave output ensures safe operation for sensitive electronics, offering protection for devices such as laptops and televisions.
• The ECO mode and quiet inverter technology contribute to reduced noise levels and improved fuel efficiency during operation.

Frequently asked questions

FLASHEVER

FLASHEVER 4000W Portable Inverter Generator 7HP 196cc 4-Stroke Petrol

• ⇅ No. 7 in the comparison · Score 9/10 (Very good)
• ↗ Now £292.99
• ● Nur noch wenige auf Lager – Only 5 left in stock.

Clean Pure Sine Wave Power Output: This 4000W max petrol inverter generator delivers stable pure sine wave electricity, which is identical to grid power. It safely powers sensitive electronic devices including laptops, smartphones, and TVs without circuit damage, perfectly meeting daily fine device power needs.

Technical details

Manufacturer

FLASHEVER

Quantity

1

Dimensions

45.0 × 43.9 × 63.0 cm

Product features

• Clean Pure Sine Wave Power Output: This 4000W max petrol inverter generator delivers stable pure sine wave electricity, which is identical to grid power. It safely powers sensitive electronic devices including laptops, smartphones, and TVs without circuit damage, perfectly meeting daily fine device power needs.
• Powerful & Efficient Engine Performance: Equipped with 7HP 196cc 4-stroke air-cooled engine, featuring an open compact frame design to optimize air circulation. This structural design ensures continuous smooth operation, high fuel efficiency and stable power supply, supporting long-time daily and emergency power use.
• Multi-Voltage Versatile Power Supply: Comes with 230V AC and 12V DC dual output interfaces to meet diverse power demands. It is suitable for home daily electrical appliances, camping equipment, inflatable beds air pumps, caravan and motorhome devices, as well as on-site construction small equipment.
• Portable & Durable For All Scenarios: Made of high-grade wear-resistant materials for excellent durability and reliability. The lightweight suitcase compact structure is easy to transport and store, ideal for home emergency backup (storm, flood power outage), outdoor camping, travel caravan and engineering site temporary power supply.
• Sturdy Construction & Optional Wheel Kit: Crafted from high-grade, hard-wearing durable materials, this generator boasts strong wear resistance and long service life for long-term frequent use. It features a scientific open frame structure that boosts heat dissipation and airflow to protect the engine. An optional wheel kit is available to upgrade portability further, catering to different moving and placement needs.

Aceup Energy

Aceup Energy 1300 Watt Inverter Pure Sine Wave Petrol Silent Generator | 4-Stroke Portable Quiet Generator Ultra-Lightweight with 230V/12V/USB for Emergency Home Use Camping Caravan

• ⇅ No. 8 in the comparison · Score 8.9/10 (Good)
• ↗ Now £229.99 was £265.00
• ● Auf Lager – In stock

Compact & Lightweight: This compact petrol inverter generator is fitted with a reliable four-stroke OHV engine, delivering a peak starting power of 1300 watts and a continuous rated running power of 1100 watts at standard 50Hz frequency. Boasting an ultra-lightweight and space-saving compact design, this portable generator weighs merely 13.5 kilograms, making it effortless to carry, move and store for outdoor activities, home emergency power supply and daily leisure use

Technical details

Colour

Yellow

Manufacturer

United Power Equipment Co.,Ltd

Quantity

1

Weight

13.50 kg

Dimensions

43.2 × 27.2 × 41.1 cm

Product features

• Compact & Lightweight: This compact petrol inverter generator is fitted with a reliable four-stroke OHV engine, delivering a peak starting power of 1300 watts and a continuous rated running power of 1100 watts at standard 50Hz frequency. Boasting an ultra-lightweight and space-saving compact design, this portable generator weighs merely 13.5 kilograms, making it effortless to carry, move and store for outdoor activities, home emergency power supply and daily leisure use
• Multi Ports & Overload Protection:Features multi-functional interfaces including a standard 230V AC power socket, alongside a 12V DC 8.3A output port and dual Type-A & Type-C USB charging ports to meet diverse daily power supply needs. Integrated overload protection and low oil level warning LED indicator, it can effectively prevent abnormal operation failures and remind users to replenish engine oil in time, ensuring more stable long-term running
• Pure Sine Wave Power & Low Noise Operation: This portable inverter generator outputs stable pure sine wave electricity, which is ideal for powering different kinds of sensitive electronic devices including smartphones, laptops and digital cameras without risk of circuit damage or data loss. Adopting a fully enclosed structural design, it effectively cuts down running noise and features quiet operation at only 52dB@7m, as quiet as daily conversation, bringing you a more comfortable and quieter working and using experience
• Real-time Data Reading: Fitted with a practical smart V.F.T digital meter, this unit clearly shows voltage, operating hours and output frequency. You can easily keep an eye on the generator’s live working condition for hassle-free everyday use
• All petrol inverter generators undergo strict factory functional testing to ensure stable performance. Backed by a 1 year limited warranty with free lifetime technical guidance from experts

maXpeedingrods

maXpeedingrods 3500W Petrol Inverter Generator Portable 4-Stroke 223cc | with Digital Control Center, 2 x 230V 13 Amp Outlet for Camping, RV Travel, Home, or Jobsites

• ⇅ No. 9 in the comparison · Score 8.7/10 (Good)
• ↗ Now £225.99
• ● Auf Lager – In stock

Provides reliable power for camping, travel, or work with digital control and multiple outlets, ensuring convenience wherever needed.

Technical details

Colour

Orange/Black

Manufacturer

maXpeedingrods

Size

3500W

Quantity

1

Weight

26.00 kg

Dimensions

43.4 × 37.6 × 45.5 cm

Advantages

• The generator produces a maximum output of 3500W, capable of powering multiple appliances simultaneously, making it suitable for various applications.
• Its inverter technology ensures clean and stable power, which helps protect sensitive electronics from potential damage.
• The multifunction display provides real-time information on voltage, frequency, fuel levels, and runtime, aiding in effective monitoring and maintenance.
• Weighing only 26 kg, the generator's compact design enhances portability, making it convenient for travel and outdoor use.

Frequently asked questions

Amrgtucf

4000W Gas Powered Portable Generator, 4-Stroke 7.5HP Gasoline Engine, Black

• ⇅ No. 10 in the comparison · Score 8.5/10 (Good)
• ↗ Now £92.00
• ● Auf Lager – In stock

Four-Stroke Configuration: In contrast to two-stroke engines, four-stroke models offer improved fuel efficiency, resulting in lower fuel usage and enhanced economy

Technical details

Colour

Black

Manufacturer

Amrgtucf

Quantity

1

Weight

14.25 kg

Dimensions

34.5 × 31.5 × 31.0 cm

Product features

• Four-Stroke Configuration: In contrast to two-stroke engines, four-stroke models offer improved fuel efficiency, resulting in lower fuel usage and enhanced economy
• Rapid Cooling: The home backup portable generator is equipped with an efficient cooling system, featuring a built-in air cooling mode and dense heat dissipation holes. The combined design effectively keeps the engine temperature low, enhancing the engine’s reliability
• Clever Engineering: The gasoline powered engine features an overhead valve design. This setup allows the engine to deliver higher torque output at low speeds, improving overall power efficiency. This advantage makes OHV engines more fuel-efficient
• Built for long term daily use: You can rely on this 4-stroke engine crafted from premium aluminium, iron, cast iron and nylon with precision die-casting and stamping. It boasts strong scratch resistance, impact resistance and corrosion protection, and will not deform easily even with frequent use
• High Performance: This gas powered portable generator delivers a robust output of 7.5 horsepower and runs at a rapid speed of 3600 revolutions per minute, ideal for powering a wide range of heavy-duty machinery and equipment