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Aceup Energy 4000 Watt Inverter Generator Portable 149cc, Gas Powered Generator Quiet for Home, RV-Ready, EPA Compliant

  • Based on 360 reviews
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Availability: Only 10 left in stock, order soon!
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Arrives Monday, Oct 20
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Style: 4000w Inverter Generator


Features

  • 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, 60Hz
  • Intelligent gauge keeps track of voltage, run-time, gasoline meter, hertz and 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 (parallel kit sold separately)
  • 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, which avoids the risk
  • Inverter technology with THD below 1.5% delivers the clean power to protect your sensitive electronic devices such as phones, TV; Fully-enclosed design reduces noice level
  • All generators are functionally tested in the factory to guarantee quality with EPA compliant; Backed by a 2 year limited and lifetime technical guidance from experts

Brand: Aceup Energy


Wattage: 3200 watts


Fuel Type: Gas


Power Source: Gas-Powered


Recommended Uses For Product: Camping, Commercial, Outage, Residential


Item Weight: 48 Pounds


Voltage: 120 Volts (AC)


Output Wattage: 4000


Special Feature: Automatic Shut Down, Digital Display, Extra-Long Run Time, Fuel Gauge, Super Quiet


Included Components: A bottle of oil, Manual, Oil funnel * 2, Spark plug wrench


Brand: Aceup Energy


Wattage: 3200 watts


Fuel Type: Gas


Power Source: Gas-Powered


Recommended Uses For Product: Camping, Commercial, Outage, Residential


Item Weight: 48 Pounds


Voltage: 120 Volts (AC)


Output Wattage: 4000


Special Feature: Automatic Shut Down, Digital Display, Extra-Long Run Time, Fuel Gauge, Super Quiet


Included Components: A bottle of oil, Manual, Oil funnel * 2, Spark plug wrench


Color: Yellow and Black


Product Dimensions: 19.68"L x 11.8"W x 17.7"H


Material: iron


Model Name: AI4000s


Engine Type: 4 Stroke


Ignition System Type: recoil start


Tank Volume: 1.32 Gallons


Engine Displacement: 149 Cubic Centimeters


Total Power Outlets: 4


Engine Power Maximum: 7 Horsepower


Starting Wattage: 4000 Watts


Running Wattage: 3200 Watts


Manufacturer: Aceup Energy


Item Weight: 48 pounds


Item model number: AI4000s


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 20

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Well constructed quiet 2500 watt generator !
Style: 2500w Inverter Generator+ Oil
Nice 2500 watt generator ! well constructed , everything fits as it should ! Came with oil and funnel kit . Very well packaged ! Starts right up after first fill of fuel . Very quiet for a generator , not silent but none are . Nice display gauge , unusual at this price point ! weighs about 50 pounds with gas and oil . about 17 1/2 inches tall including handle . I needed something less than 19 tall to fit under my workbench so it was perfect for my needs . I just need something for possible power outage for fridges and sump pump so this is plenty for me . display shows fuel level ,voltage output,amps ,etc.. nice instruction manual that is correct english ! Would recommend this generator from Aceup to anyone. Appears they are a stand alone company according to their website , not just selling someone elses rebranded product . They also sell a larger model that I was going to order but was not sure of height . That one should be good for someone needing more power . Very happy with my purchase and was impressed with how nice the construction and features were! Of course time will tell but it does what it is supposed to and seems VERY comparable to other generators in this class for substantial savings ! Eco mode is nice as it reduces RPM and noise level. I think anyone looking for an inverter generator in this class would be happy with it .Do not buy something too small for your needs though . Add up your appliances and base your generator output on that ! Remember generator surge watts are NOT running watts ! You will burn up your generator no matter who makes it ! ... show more
Reviewed in the United States on September 23, 2025 by john

  • ABSOLUTELY AWESOME!
Style: 4000w Inverter Generator
Purchased this generator to replace the 2000 watt generator that stopped working. The Aceup 4000 has twice the power at an amazing deal!! This generator is quiet and runs our RV with a 15000 btu a/c with all the lights on with no problem! I love the display. It shows everything. It starts first pull. If you’re wanting a powerful generator at an incredible deal this is the one to purchase. It weighs around 50lb and is easy to move around. The build quality compares to generators that would cost you 3 times the amount of money! ... show more
Reviewed in the United States on September 6, 2025 by pamela w.

  • Good portable generator, you will not go wrong with this.
Style: 2500w Inverter Generator+ Oil
Good generator if you are needing something easy to set up and use, light, and very quiet, and small in size. Have found out after use that it has a very sensitive low oil sensor on it and if it stops running check the oil. Also seems to use a little oil as I have had to add oil to it a few times since break in. Does run very well and is very well worth the money. ... show more
Reviewed in the United States on August 26, 2025 by Denver F Mays

  • Reliable and Quiet Power Source for Home and Travel
Style: 2300w Inverter Generator
I was pleasantly surprised by the Aceup Energy 4000 Watt Portable Inverter Generator's exceptional performance. This gas-powered generator operates quietly, making it ideal for both household use and outdoor adventures in an RV. Its EPA compliance gives me peace of mind knowing I'm using an environmentally friendly product. The power output is impressive, effortlessly running all my essential appliances. The generator's portability is a major advantage, allowing me to transport it with ease wherever I need power. Overall, this is a fantastic purchase that has met and exceeded my expectations, providing reliable and efficient power whenever I need it. ... show more
Reviewed in the United States on July 5, 2025 by Todd Carpenter

  • Very powerful, quiet, and easy to use
Style: 4000w Inverter Generator
This generator exceeded my expectations. It’s quiet, starts quickly, and has enough power to keep essential appliances running during blackouts. I sent it to Cuba and it’s been a huge help for dealing with the frequent power outages. The design is compact and easy to handle. Very satisfied with this purchase. Highly recommended! ... show more
Reviewed in the United States on August 3, 2025 by Racson

  • Worst experience ever!
Style: 4000w Inverter Generator
I purchased this generator simply for the low price, huge mistake. I added oil and gas and tried cranking but not happening. I pulled the spark plug and it was wet from the gas so I tested the spark. No spark. I pulled a few more times and the spark mysteriously returned and the generator started. Still haven't figured that one out. When the generator started it ran for three seconds at wide open throttle and died. Tried several more times with the same results. I then noticed that the stepper motor on top of the carburetor had fallen apart. I brought the generator in the house and set it on the kitchen table so I could fish the broken parts from the generator. To my surprise gas began pouring from the generator. Now my wife is pissed. I contacted Amazon to try to get a resolution only to be told it was a nonreturnable item and I would have to contact the manufacturer. Good luck with that! They don't answer the phone number provided and the only response i got through email so far is suggestions on what the issues might be. 🤔 Amazon needs to step in and make this right. Refund my money or send me a working nondefected generator. Update: Amazon did provide a refund! Thanks ... show more
Reviewed in the United States on December 23, 2024 by Kevin Hudson Kevin Hudson

  • Same weight and not much larger than much lower capacity inverter generators
Style: 4000w Inverter Generator
So far so good. Three pools and it started right up on recreation 90 no ethanol fuel. Plugged it into the boat and it’s running the air conditioning unit without any problem.. not whisper, quiet. It’s easy to handle to move around and the fact that it has the 30 amp receptacle and higher output at steady 3500 continuous makes it much more versatile than my 2200 harbor freight predator. The predator has been an outstanding unit, but this one was less expensive. Currently the predator cost about $600 and this one was about $500. ... show more
Reviewed in the United States on May 20, 2025 by Leslie

  • This is what I have seen
Style: 2500w Inverter Generator+ Oil
When I got the generator out of the box and got it ready to to it would not run on eco or anything with the chock off then it would not run at all . I took the side cover off and it had a loss wire no the control panel. Put it on and it runs fine.
Reviewed in the United States on August 6, 2025 by Kelly Lavender

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