The 10 Best Offers for 4000w Generator - March 2025
Last updated: 09. March 2025
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Best Choice
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
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 | Manufacturer | Weight |
| - | ALLPOWERS | - |
£2,39999
2
Best Value
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
AIVOLT
Save £100.00 Today!
£999.99
(10% OFF!)
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 | Manufacturer | Weight |
| Orange | AIVOLT | 56 kg |
£89999
Was: £999.99
-10%
3
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Hyundai
Save £48.60 Today!
£849.99
(6% OFF!)
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 | Manufacturer | Weight |
| Blue | Hyundai | 47 kg |
£80139
RRP: £849.99
-6%
4
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
RocwooD
- 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 | Manufacturer | Weight |
| Black | RocwooD | 48 kg |
£78399
5
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
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 | Manufacturer | Weight |
| Orange,black | maXpeedingrods | 21 kg |
£54999
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Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
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 | Manufacturer | Weight |
| Orange/Black | maXpeedingrods | 26 kg |
£33999
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Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
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 | Manufacturer | Weight |
| Blue 4000ieg S | K&S Könner&Söhnen | 40 kg |
£84900
8
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Aceup Energy
- 149cc 4-stroke OHV engine produces 4000 peak watts and 3200 rated watts with recoil start for up to 5 hours at half-load on 1.32 gallon
- 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 120V AC one 20A outlets, one RV receptacle, one 12V DC 8.3A car charger outlet; Parallel ready to connect 2 generators for twice the power (parallet kit sold separately)
- Produce clean power required by sensitive electronics such as phones, TV; Fully-enclosed design reduces noice level
- 5-in-1 Knob:fuel on/shut-off,engine on/off,choke;When turning off the engine, the fuel switch is turned off at the same time
| Colour | Manufacturer | Weight |
| Yellow and Black | Aceup Energy | 23 kg |
£68982
9
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Champion Power Equipment
Free Delivery**
- Superior power & features - Our Champion Power Equipment 92001i Range of Invertor Generators offer both superior power and outstanding performance. These Inverters are offered in multiple fuel types, are Super-Lightweight and are packed with many great features including True Sine Wave Technology, EZ Start, LED Indicators, , Parallel Connectability, Multiple Outlets and USB Charging
- Super lightweight & ultra quiet operation - Weighing in at only 17.6Kg, and only 44 x 28.5 x 44.5cm in size, the Mighty Atom is the World's lightest 2kW Inverter Generator meaning that it is both extremely lightweight and portable. The device is also extremely quiet during operation at only 58 dBA.
- Reliable champion 2200w petrol engine - The Invertor Generator has an EZ Start and comes with a 2200 Maximum Watt (1900 Running Watts) 79cc Petrol Engine that will run up to 10.5 hours on a 4.0 Litres full tank (at 25% load). There is also a handy LED Indicator and Economy Mode to save on fuel as well as an Automatic Oil Shut Off Sensor and 500ml Oil Capacity.
- True sine wave invertor technology - This technology makes this generator ideal for sensitive electronics such as computers, laptops and TV. Perfect for your next camping trip or powering small household items like fridges/freezers, power tools, lighting units & garden equipment. This inverter has parallel capability allowing you to pair up with other Champion Inverters using an optional Parallel Kit.
- Includes power outlets & usb adapter - Included with the device are 2 covered 240V 13A Power Outlets and a handy 12v DC USB Adapter you can use to power your phone, laptop, tablet, or similar device. The Parallel Kit (Sold Separately) allows you to pair this up to another Champion inverter for double the power.
| Colour | Manufacturer | Weight |
| Yellow,black | Champion Power Equipment | 17.6 kg |
£39999
10
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
- Powerful & Reliable Performance: Equipped with a 225cc 4-stroke IC225D engine, this portable petrol inverter generator delivers a maximum output of 3800W and a continuous output of 3500W, making it perfect for powering appliances, tools, and sensitive electronics.
- Quiet & Efficient Operation: With low-noise technology producing just 58 dBA at 7m and an ECO mode to optimize fuel efficiency, enjoy cost-effective and undisturbed power for holidays, events, or emergency use.
- Versatile Power Options: Features two 230V UK mains sockets, a 12V 5A outlet, and a USB port to charge and power multiple devices simultaneously, from kettles and fridges to laptops and TVs.
- Portable & Easy to Transport: Compact design weighing only 48kg, equipped with a folding handle, rear moulded grip, and durable wheels for effortless movement and storage in your car, van, or garage.
- Safe for Sensitive Electronics: Pure sine wave output ensures the safe operation of TVs, laptops, and other sensitive devices without the risk of damage or overload.
- User-Friendly LCD Display: Monitor performance at a glance with the integrated LCD screen displaying voltage, frequency, and hour count for better control and maintenance planning.
- Durable & Safe: Includes digital overload protection and low-oil shutdown to safeguard both the generator and connected devices. Built with a robust inverter board for handling high inductive loads.
- Eco-Friendly & Cost-Saving: The 'ECO' mode automatically adjusts engine speed to match load demand, reducing fuel consumption, noise, and wear for long-lasting performance.
- Ideal for Leisure & Emergency Use: Perfect for powering caravans, motorhomes, horseboxes, outdoor lighting, and sound systems. Provides dependable backup power for appliances like fridge-freezers during outages.
- Peace of Mind with Warranty: Backed by a 2-year warranty from P1, ensuring reliability and customer satisfaction.
| Colour | Manufacturer | Weight |
| Blue | Hyundai | 48 kg |
£76999
General information about 4000w Generator:
The 4000W Generator: A Reliable Power Source for Various Applications
When it comes to ensuring a steady power supply for different needs, the 4000W generator proves to be a reliable solution. With its capacity to provide 4000 watts of power output, this generator is highly versatile and can cater to a wide range of applications, making it an essential tool for both residential and commercial use.
Powerful and Efficient Performance
Equipped with a robust engine, the 4000W generator is designed to deliver a consistent power supply that meets various power requirements. Whether it's powering household appliances during a blackout or running essential equipment on a construction site, this generator can reliably handle the load. Its impressive power output allows it to run multiple devices simultaneously, providing convenience and flexibility. Additionally, the generator's efficient design ensures optimal fuel consumption, effectively reducing operational costs and extending its runtime.
Versatility for Different Applications
The 4000W generator is a versatile tool that can be used in numerous settings and situations. It is an ideal option for outdoor enthusiasts who require a power source during camping trips or RV adventures. With its portable design, this generator can provide electricity to charge electronic devices, run small appliances, and even power lights, allowing users to enjoy the comforts of home even in remote locations. Moreover, this generator proves to be invaluable during emergencies, ensuring that essential devices like refrigerators and medical equipment continue to function when the regular power supply is disrupted.
Conclusion
In conclusion, the 4000W generator is a reliable and versatile power source suitable for various applications. Its powerful performance and efficiency make it an excellent choice for residential and commercial use. With its ability to handle multiple devices simultaneously and its portability for outdoor adventures, this generator provides convenience and peace of mind. Whether it's for backup power during emergencies or enhancing recreational activities, the 4000W generator proves to be a valuable tool that provides a steady and reliable power supply.
* 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.
** "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.