The 10 Best Offers for 4000w Generator - April 2025
Last updated: 11. April 2025
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1
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.
EF ECOFLOW
- [Powerful and Versatile] The EcoFlow DELTA Pro 3 supports 230V voltage and has a 4000W output (6000W with X-Boost) that can power almost of your home appliances.
- [Multiple Charging Methods] Featuring a 4000Wh LFP battery, expandable to 12kWh with extra batteries or Smart Generators to meet your energy needs. With 6 unique charging methods, including AC outlets, solar panels, gas generators, and EV charging piles, you can forget fuel-cost worries.
- [Uninterrupted Life] With an ultra-fast 10 ms switch-over time, enjoy instant backup for your NAS systems, servers, and entertainment devices. Safeguard against power disruptions and ensure continuous, safe operation. This portable power station is your reliable partner for an uninterrupted life.
- [Explore the Secure Feeling] The EcoFlow DELTA Pro 3 features automotive-grade LFP cells and IP65-rated CTC battery pack technology, safeguarding battery health and extending its lifespan. Enjoy peace of mind with a 5-year warranty.
- [Silent as a Whisper] With X-Quiet technology, this solar generator operates at a peaceful hum as low as 30 dB, ensuring undisturbed sleep even beside your bed. Its whisper-quiet operation is so discreet, making it perfect for both indoor and outdoor use.
| Colour | Manufacturer | Weight |
| Grey | EF ECOFLOW | 51.5 kg |
£2,79900
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.
Hyundai
Save £65.00 Today!
£779.99
(8% OFF!)
Free Delivery**
- Powerful 210cc Hyundai petrol engine: Produces a maximum output of 1kW and continuous output of 3200W
- Ideal for use whilst camping or in a caravan/motorhome: Great for TVs, laptops, smartphones, small air pumps and more
- Ultra-quiet generator: 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
- Compact and portable: Weighing just 35kg, easily store your generator in the back of your car or van
- 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 | 35 kg |
£71499
RRP: £779.99
-8%
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.
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
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.
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 |
£66187
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.
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
6
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
7
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
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 |
£99999
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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.
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
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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 built-in electronic unit with microprocessor control monitors the operation of thegenerator and provides a stable output voltage of 230V 50Hz sinusoidal form, which issuitable for the reliable operation of sensitive electronics
- Soundproof housing provides minimal noise (70dB Lpa 7m), comfortable use andconvenient transportation and is equipped with transport system for easy handling.
- The generator has an ATS output for connecting an ATS unit (Automatic TransferSwitch). The ATS unit automatically starts the generator and transfers the load to it when the main power supply is disconnected. The ATS output features an 8-pinconnector for connecting the ATS unit KS ATS 4/25 Petrol.
- The reliable proprietary K&S engine is characterised by increased wear resistance,long-term and stable operation as well as meets all European quality standards,including the latest EUROV emission standards. The ECONOMY MODE reduces fuelconsumption up to 50% at low loads due to reduced engine speed.
- Ergonomic control panel is equipped with 6-in-1 multifunction LED display,ECONOMY MODE switch,typical 12 V car socket, generator parallel connection outputfor double power as well as RESET button for resetting the control system (upontripping of the circuit breaker) and restoring power supply, ATS output.
- Könner & Söhnen petrol inverter generators are equipped with a robustbrushless alternator with 100% copper winding. The high-end compactpermanent magnet alternator is housed in a plastic casing and can withstandmaximum loads without any damage to ensure long-term and reliableoperation of the generator set.
- Control of all main operating status indicators: overload protection, automatic enginestop at low oil level, 6-in-1 multifunction LED display (load, fuel level, frequency,voltage, hour meter), oil level, overload and operation indicators.
- KS PU1 generator parallel connection box from Könner & Söhnen. Parallelconnection of two inverter generators ensures double output power.
| Colour | Manufacturer | Weight |
| Blue4000ie S | K&S Könner&Söhnen | 38 kg |
£76400
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.
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 | Manufacturer | Weight |
| Yellow and Black | Aceup Energy | 23 kg |
£43599
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.