Best 4000w Generator Deals - Top 10 in January 2025

Last Update: 23. January 2025
1
Best Choice
9.9
ALLPOWERS Industrial International Limited

  • [3456Wh large capacity with 4000W high output] The ALLPOWERS R4000 portable power station is equipped with a 3456Wh LiFePO4 safety battery. It has 4* pure sine wave AC outputs (230V 4000W, peak 6000W), 2* 100W USB-C, 4* USB-A output, 1* car cigarette lighter (12V/10A). ALLPOWERS solar generator supports charging household appliances or RV batteries. It is very suitable for emergency power outages at home and long-distance outdoor travel by RV.
  • [Fast charge 100% in 1.2 hours] Thanks to our AP-POWER technology, the R4000 battery can be charged from 0 to 100% in just 1.2 hours. It has three independent sets of solar charging ports, which can charge solar panels of different brands and voltages at the same time, and the total solar charging power is up to 2000W. This unique design can meet the solar charging requirements under different circumstances and can be fully charged within 1.7 hours.
  • [Durable and Safety LiFePO4 Battery] This ALLPOWERS R4000 power station has a LiFePO4 battery. The maximum battery capacity is higher than 80% after 3500 cycles of charging and higher than 50% after 6500 cycles. Therefore, R4000's service life exceeds more than 10 years. The same LiFePO4 battery that is also used in electric vehicles is safe, reliable and non-flammable. It is equipped with three charging modes (Fast Mode/Standard Mode/Silent Mode).
  • [Portable and UPS Function] ALLPOWERS R4000 Portable Solar Generator has an extendable handle and wheels that are perfectly ergonomic and very easy to carry and travel. Equipped with an uninterruptible power supply (UPS), the device automatically switches to the internal battery power supply within 15ms in the event of a power failure or interruption. Ensure the normal operation of CPAP, refrigerators, wine cabinets, servers and desktop computers.
  • [Warranty & Scope of Delivery]1 * ALLPOWERS R4000 Portable Power Station, 1 * AC charging cable, 1 * User Manual.
Colour Brand Weight
- ALLPOWERS -
£2,39999
Amazon
Show Deal
2
Best Value
9.9
RocwooD
TODAY 3% OFF!
£808.99 (3% DISCOUNT!)

  • Power - The RocwooD RG8000I Generator is powered by a single cylinder OHV four-stroke air cooled engine. The RG8000I exceeds the Euro V standard and the inverter produces 100% clean pure-sine power that is capable of running sensitive electronic equipment.
  • Reliable - You can look forward to 3500 watts of continuous power output, with 4000 watts on tap to cope with the initial draw. This generator can run a huge range of appliances and is ideal for camping. Reliable and powerful at a affordable price.
  • Electric Start - With a built in battery the RG8000I conveniently starts at the push of a button. There is also pull start on offer as a backup. The RG8000I Inverter generator has two approved 230V 16AMP outlets, dual USB sockets for fast charging and a 12V 8AMP battery charging outlet. The RG8000I boasts a huge 6L tank meaning you can expect an impressive running time of over 12 hours at half load or 6 hours at full load and is one of the quietest on the market and idles at just 65 decibels on a 50% load.
  • Transport - You can transport it around with minimum fuss thanks to the sturdy telescopic handle and large all terrain wheels. So whether you need a seriously powerful generator on hand for running tools on the job site, for your motorhome, off-grid cabin, your next camping adventure or as backup for power outages, the RocwooD RG8000I is a workhorse you can rely on.
  • Warranty - This RocwooD product comes with a 12 Month domestic user warranty, business or continuous use will invalidate any warranty.
Colour Brand Weight
Black RocwooD 48 kg
£78399
Was: £808.99 -3%
Amazon
Show Deal
3
9.8
Hyundai

FREE delivery**
  • Powerful 223cc Hyundai petrol engine: Produces a maximum output of 4kW and continuous output of 4000W
  • Ideal for use whilst camping or in a caravan/motorhome: Great for TVs, laptops, smartphones, small air pumps and more
  • Ultra-quiet generator with remote electric start: Won't disturb others on your camping or caravan site
  • Power multiple devices at the same time: Outlets include a 230v socket and 12v DC battery charger
  • Portable generator: Folding front handle and heavy-duty wheels make transportation easy
  • Economical generator: Included ECO mode lowers engine revs to increase fuel economy
  • Easy to use: Popular option for powering family holidays
  • Peace of mind: 3 year Hyundai domestic warranty* (terms apply)
Colour Brand Weight
Blue Hyundai 47 kg
£84999
Amazon
Show Deal
4
9.7
AIVOLT

FREE delivery**
  • Eco Mode & Long Runtime - A fully fueled 13.5L tank will provide you consistent power for up to 13 hours making the generator extremely economical. It runs 10 hours at 25% load (1375W), 8 hours at 50% load(2750W), 5 hours at 75% load, 4.5 hours at 100% load. In Eco-mode, it even runs more time and prolongs generator’s life. Perfect for RV camping, construction, jobsites and power failures.
  • Multifunction Control Panel with 5-in-1 LCD Multi-Meter - The outstanding design features bright orange appearance and multifunctional panel including parallel connectability, a 230V AC outlet(32A), 2 standard 230V 3 pin sockets(16A), 2 USB outlets, a 12v DC charging outlet, a 5 in 1 LCD Multi-Meter. The included 12V DC battery charging cable can be used to charge the on-board power supply.
  • True Sine Wave Power - This inverter generator has a powerful 322cc 4 stroke OHV air-cooled 100% copper winding engine which can produce 6000W maximum watts and 5500W continuous watts steady clean power (less than 3% THD) with very low fuel consumption. Ideal for domestic appliances, industrial electrical equipment and many large outdoor garden appliances.
  • Portable & Low Noise - Weighs only 56kg, the high-power generator is very easy to pull with a labor-saving built-in telescopic rod and 2 never-flat wheels. When the generator is at 25% load, it comes with 62 decibels noise at 23 feet that is comparable to the sound of a normal conversation.
  • Electric Start & Recoil Start - This generator is equipped with an electric start. You can start the generator by pressing and holding the button, which makes starting the generator easier and more convenient. The manual start option is also retained to provide you with more starting options. The multi-function switch allows you to operate the generator with less effort and more efficiency.
  • The package contains: 1*6000W petrol generator, 1*spark plug wrench, 1*oil funnel, 1*12V DC battery charging cable, 1* screw driver, 1* quick start guide, 1*manual.
Colour Brand Weight
Orange AIVOLT 56 kg
£99999
Amazon
Show Deal
5
9.6
maXpeedingrods

FREE delivery**
  • 【Multifunction Power Supplier】 Quiet and fuel efficient 4 stroke 145cc petrol generator produces 3300W max watts and 3000W running watts. It is easily able to run the lighting system, RV or a small family home. And run a huge range of high-power appliances such as an air conditioner with 6000 BTU cooling capacity, refrigerators, kettles, and even more appliances at the same time.
  • 【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. which is almost the quietest generator of this rated power. At this noise level, there is little disturbance for users and people nearby. Please note that ambient noise may affect the overall value of the noise of the machine.
  • 【Extra Long Runtime】Runs 8.3 hours at 25% load (750w load) 、4.5 hours at 50% load (1500w load). In ECO mode, the runtime can be extended up to 10-12 hours. Guaranteed power supply overnight.
  • 【Provide Clean Power】This inverter technology provides more steady power, produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers.
  • [Brand Warranty] Maxpeedingrods warrants all the inverter generators against defects in workmanship under normal use for a period of 2 years from the date of retail purchase by the original end-user purchaser ("Warranty Period"), and free lifetime technical support and customer service.
Colour Brand Weight
Orange,black maXpeedingrods 21 kg
£54999
Amazon
Show Deal
6
9.5
K&S Könner&Söhnen

  • The inverter generator runs on both petrol and liquefied gas (propane-butane). The scope of delivery includes a gas hose with a reducer for connection to a gas cylinder according to DIN 477.
  • The built-in electronic unit with microprocessor control monitors the operation of the inverter generator and provides a stable output voltage of 230V 50Hz sinusoidal form.
  • Soundproof housingpetrol inverter generator provides minimal noise (71 dB Lpa 7 m), comfortable use and convenient transportation and is equipped with transport system for easy handling.
  • The generator has the ECONOMY MODE function that reduces fuel consumption by up to 50% and allows using the generator at low loads by reducing engine speed.
  • Parallel connection box from Könner & Söhnen KS PU1 enables to pair two inverter generators for double output power receiving.
  • The portable generator camping is equipped with LED display, two USB ports 5 V/1 A, 5 V/2.1 A, typical 12 V car socket, ECONOMY MODE switch, operating status indicators, generator parallel connection output for double power receiving
  • High-end synchronous alternator with 100% copper winding can withstand maximum loads without any damage to ensure long-term reliable operation of the silent inverter generator
  • IMPORTANT: Do not overtighten the gas hose nut — the connection is designed to be secure with minimal tightening. Overtightening may damage the fitting or impair its performance
Colour Brand Weight
Blue 4000ieg S K&S Könner&Söhnen 40 kg
£84900
Amazon
Show Deal
7
9.4
United Power Equipment Co.,Ltd

FREE delivery**
  • 223cc 4-stroke OHV engine produces 3800 peak watts and 3500 rated watts with recoil start for up to 10 hours at quarter-load on 10 L, 50Hz
  • Intelligent gauge keeps track of voltage ,run-time and hertz and track power output, plus feature low oil led and economic mode to save fuel
  • Includes two 230V AC outlets, one 12V DC 8.3A outlet and two 5V USB ports; Parallel ready to connect 2 generators for twice the power (parallel kit sold separately)
  • This portable generator for camping produces the clean power required by a variety of sensitive electronics such as phones, TV
  • All generators are functionally tested in the factory to guarantee quality with CE EURO-V compliant; Backed by a 1 year limited warranty with lifetime technical guidance from experts
Colour Brand Weight
Yellow and Black Aceup Energy 28 kg
£37999
Amazon
Show Deal
8
9.3
maXpeedingrods

FREE delivery**
  • 【Multifunction Power Supplier】4-stroke petrol generator produces 3500W max watts and 3200W running watts. It is easily able to keep the lighting system or a small family house, power air conditioners and many other small appliances such as refrigerators,coffee machine at the same time.
  • 【Provide Clean Power】This inverter technology provides more steady power, produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers.
  • 【Multi-Function Display】Easy to monitor voltage and frequency power; display remaining fuel, which is suitable for timely fuel change; display cumulative runtime, which is suitable for later generator maintenance; display unique runtime, perfect timer function.
  • 【Lightweight and Powerful Motor】Only 26 kg, small and compact, easy to carry, 223 cc OHV motor with two 230 V ports and a 12 V DC connector, provides plenty of power for multiple tasks.
  • 【Brand Warranty】 Maxpeedingrods warrants all the inverter generators against defects in workmanship under normal use for a period of 2 years from the date of retail purchase by the original end-user purchaser ("Warranty Period"), and free lifetime technical support and customer service.
Colour Brand Weight
Orange/Black maXpeedingrods 26 kg
£33999
Amazon
Show Deal
9
9.2
United Power Equipment Co.,Ltd

FREE delivery**
  • 149cc 4-stroke OHV engine produces 3400 peak watts and 3200 rated watts with recoil start for up to 5 hours at half-load on 5L, 50Hz
  • Intelligent gauge keeps track of voltage, run-time and hertz and track power output, plus feature low oil led and economic mode to save fuel
  • Includes 230V two AC outlets, one 12V DC 8.3A car charger outlet and USB TypeA/C ; Parallel ready to connect 2 generators for twice the power (parallet kit sold separately)
  • This portable generator produces the clean power required by a variety of sensitive electronics such as phones, TV; Fully-enclosed design reduces noice level
  • All generators are functionally tested in the factory to guarantee quality with CE, EURO-V compliant; Backed by a 1 year limited warranty with lifetime technical guidance from experts
Colour Brand Weight
Yellow and Black Aceup Energy 23 kg
£41999
Amazon
Show Deal
10
9.1
Aceup Energy

  • 149cc 4-stroke OHV engine produces 4000 peak watts and 3200 watts rated with recoil start up to 5 hours at half load on 1.32 gallons, 60 Hz
  • Smart meter keeps track of voltage, run time and hertz and track power output, plus features low-oil LEDs and economy mode to save fuel
  • Includes 120V AC outlets, one RV receptacle, one 12V DC, 8.3A car charger outlet; Parallel ready to connect 2 generators for twice the power (Parallel kit sold separately)
  • Produces clean energy required by sensitive electronics such as phones, TV; fully enclosed design reduces noise level, 58db at a distance of 25 feet
  • All generators are functionally tested at the factory for quality assurance with EPA compliance; backed by a 2-year limited warranty with free lifetime technical guide from experts
Colour Brand Weight
Yellow and Black Aceup Energy 23 kg
£78887
Amazon
Show Deal

* the possibly used term "best" etc. refers only to our possibly subjective personal opinion.
** "Free Delivery" means that this is possible under the given conditions at the time of data retrieval from the relevant provider, but cannot be guaranteed. It is technically not possible to provide information in real-time. The shipping costs may vary under certain circumstances (different provider, place of delivery, etc.). The shipping costs shown in the further ordering process apply.

Other IMPORTANT INFORMATION that we ask you to take note of:

We may receive a commission if you make a purchase via the links on our site. This has no impact on the placement of the products on our site. Our website is part of amazon associates program - Amazon, Amazon Prime, the Amazon Logo and Amazon Prime Logo are registered trademarks of Amazon, Inc. or its affiliates.

Disclaimer:
1. The prices shown may have risen since the time we last updated them.
2. The actual price of the product on the seller’s site at the time of purchase will govern the sale.
3. It is not technically possible for the prices displayed above to be updated in real-time. 

More information and FAQs about the featured 4000w Generator in this comparison:


Technical Details
Colour Black
Brand RocwooD
Weight 48 kg
Advantages
  • Quiet
  • Portable
  • Lightweight
  • Easy to Use
  • Compact
FAQs about Inverter Generator Petrol 4000W Watts RocwooD Portable Camping FREE Oil Quiet Silent Caravan Motorhome Outdoor Home 230V Lightweight UK Plug Compact 4 Stroke
What is the maximum power output of the generator?
The maximum power output of the generator is 4000W.
Is the generator suitable for camping and outdoor use?
Yes, the generator is portable and designed for camping and outdoor activities.
Does the generator come with oil included?
Yes, the generator comes with free oil included.
Is the generator quiet during operation?
Yes, the generator is designed to be quiet and silent during operation.
Does the generator have a UK plug?
Yes, the generator comes with a UK plug.
Technical Details
Colour Blue
Brand Hyundai
Weight 47 kg
Advantages
  • Portable
  • Inverter technology
  • 3 year warranty
  • 4000W power
FAQs about Hyundai 4000W / 4.0kW Portable Petrol Inverter Generator, Remote Keyfob & Electric Start, Wheel Kit & Closed Case Design, 3 Year Warranty
Is the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator fuel efficient?
Yes, the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator is fuel efficient and designed to provide longer runtime with maximum fuel efficiency.
What is the noise level of the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator?
The generator operates at a noise level of approximately 60 decibels, which is relatively quiet for a generator of its size and power.
Does the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator have electric start?
Yes, the generator is equipped with electric start for easy and convenient starting.
Can the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator power sensitive electronics?
Yes, the generator features inverter technology that produces clean and stable power, making it safe to power sensitive electronics.
What is the warranty period for the Hyundai 4000W Petrol 4.0kW / 5kVA Portable Inverter Generator?
The generator comes with a 3-year warranty, providing peace of mind and protection against any manufacturing defects.
Technical Details
Colour Orange
Brand AIVOLT
Weight 56 kg
Advantages
  • Portable
  • Ultra quiet
  • Pure sine wave
  • Electric key start
  • Suitable for camping, construction, jobsites
FAQs about AIVOLT 6000W Petrol Inverter Generator 4 Stroke Portable Generator for Camping, Construction, Jobsites - Pure Sine Wave, Ultra Quiet, Electric Key-322cc Engine, 13.5L Fuel Tank
How loud is the generator?
The AIVOLT 6000W Petrol Inverter Generator is ultra quiet, making it suitable for camping and other outdoor activities.
What is the engine capacity?
The generator is equipped with a 322cc engine.
How long can the generator run on a full tank of fuel?
The generator has a 13.5L fuel tank capacity, which allows for extended use before refueling is required.
Does the generator produce pure sine wave power?
Yes, the AIVOLT 6000W Petrol Inverter Generator produces pure sine wave power for the safe operation of sensitive electronics.
Is the generator suitable for construction and jobsites?
Yes, the AIVOLT 6000W Petrol Inverter Generator is designed for construction and jobsites, providing reliable power in remote locations.
Technical Details
Colour Orange,black
Brand maXpeedingrods
Weight 21 kg
Advantages
  • Portable
  • Silent
  • Pure Sine Wave
  • Suitable for camping
  • Ideal for RV travel
FAQs about maXpeedingrods 3300W Portable Inverter Generator Petrol Silent Pure Sine Wave Generator for Camping, RV Travel, Home, or Jobsites
What is the wattage of the maXpeedingrods portable inverter generator?
The maXpeedingrods portable inverter generator has a wattage of 3300W.
Is the maXpeedingrods generator petrol-powered?
Yes, the maXpeedingrods generator is petrol-powered.
Does the generator produce pure sine wave power?
Yes, the maXpeedingrods generator produces pure sine wave power.
Can I use the generator for camping or RV travel?
Yes, the maXpeedingrods generator is suitable for camping and RV travel.
Is the generator silent during operation?
Yes, the maXpeedingrods generator is designed to be silent during operation.
Technical Details
Colour Blue 4000ieg S
Brand K&S Könner&Söhnen
Weight 40 kg
Advantages
  • Portable
  • Dual fuel
  • Electric start
  • Silent operation
  • Multiple plug sockets
FAQs about Könner & Söhnen KS 4000iEG S portable LPG / petrol inverter generator 4000W, UK Standard Plug & 230V 2 x 13 Amp Plug Sockets, 2 USB ports, electric start dual fuel generator, ilent inverter generator
Does the generator have a dual fuel capability?
Yes, the Könner & Söhnen KS 4000iEG S generator can run on both LPG and petrol.
How much power does the generator produce?
The generator has a maximum power output of 4000W.
What type of plugs does the generator have?
The generator comes with a UK Standard Plug and two 230V 13 Amp Plug Sockets.
Is the generator easy to start?
Yes, the Könner & Söhnen KS 4000iEG S generator features an electric start for easy operation.
Is the generator quiet?
Yes, the Könner & Söhnen KS 4000iEG S generator is a silent inverter generator.
Technical Details
Colour Orange/Black
Brand maXpeedingrods
Weight 26 kg
Advantages
  • Portable
  • Inverter
  • Pure Sine Wave
  • Versatile
FAQs about maXpeedingrods 3500W Portable Inverter Generator 4-Stroke Pure Sine Wave Petrol Generator for Camping, RV Travel, Home, or Jobsites
What is the maximum power output of the maXpeedingrods generator?
The maximum power output of the maXpeedingrods generator is 3500W, making it suitable for various applications such as camping, RV travel, home backup, or jobsites.
What type of generator is the maXpeedingrods portable inverter generator?
The maXpeedingrods generator is a 4-stroke pure sine wave petrol generator, which ensures stable and clean power output for sensitive electronic devices.
Is the maXpeedingrods generator suitable for camping?
Yes, the maXpeedingrods generator is suitable for camping as it provides portable power for various camping appliances and devices.
Does the maXpeedingrods generator have a compact design?
Yes, the maXpeedingrods generator features a portable and compact design that allows for easy transportation and storage during camping trips or other outdoor activities.
Can the maXpeedingrods generator be used for home backup?
Yes, the maXpeedingrods generator can be used for home backup to provide power during emergencies or power outages.

General information you should know about 4000w Generator:


Are you in need of a reliable power source for your outdoor adventures or emergency backup? Look no further than the mighty 4000W generator. In this product comparison, we will explore the numerous benefits and features of a 4000W generator, aiming to help you make an informed decision and ultimately persuade you to purchase one of these powerful machines.

A 4000W generator is a versatile and efficient device that provides a stable power supply wherever you go. Whether you're camping in the wilderness or experiencing a power outage at home, this generator has got you covered. With a capacity of 4000 watts, it can power a wide range of appliances and tools, including refrigerators, air conditioners, power tools, and more. Its impressive power output makes it suitable for both residential and commercial use.

One of the key advantages of a 4000W generator is its portability. Most models come with wheels and a handle, allowing you to effortlessly transport it from one location to another. This is especially beneficial for camping trips or outdoor events where mobility is crucial. Despite its compact size, it packs a punch when it comes to power generation.

Furthermore, a 4000W generator typically features multiple outlets, enabling you to connect several devices simultaneously. This is particularly useful during emergencies or outdoor gatherings when you need to power multiple appliances or charge various devices at once. Additionally, some models offer USB ports for convenient charging of smartphones, tablets, or other electronic gadgets.

Safety is always a top priority, and 4000W generators are designed with this in mind. Most models incorporate advanced safety features such as automatic voltage regulation, low-oil shutdown, and overload protection. These features not only prevent damage to the generator but also safeguard your connected devices from potential electrical hazards.

In conclusion, a 4000W generator is a reliable and powerful companion for your outdoor adventures or emergency backup needs. Its versatility, portability, and safety features make it an excellent investment for both residential and commercial use. So why wait any longer? Make the wise choice and purchase a 4000W generator today to ensure a stable power supply wherever you go. Power up and enjoy peace of mind with this essential device.