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Aceup Energy

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

  • Based on 168 reviews
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, Jun 2
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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
  • Versatile power supply: 120V AC one 20A outlets, one RV receptacle, one 12V DC 8.3A car charger outlet; Parallel ready to connect 2 generators for double 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
  • Quiet Operation: The noise level is only about 60 decibels in Eco mode at 23 feet with 25% load; Inverter technology with THD below 1.5% delivers the clean power to protect your sensitive electronic devices such as phones, TV
  • All generators EPA compliant are functionally tested before leaving the factory to guarantee quality; Backed by 2-year limited warranty under normal use and FREE lifetime technical guidance from experts

Brand: Aceup Energy


Wattage: 3200 watts


Fuel Type: Gasoline


Power Source: Gas-Powered


Recommended Uses For Product: Camping, Commercial, Emergency , 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: Manual, Oil funnel * 2, Spark plug wrench


Wattage: 3200 watts


Fuel Type: Gasoline


Power Source: Gas-Powered


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


Voltage: 120 Volts (AC)


Output Wattage: 4000


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


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


Frequency: 60 Hz


Is Electric: No


Runtime: 10 hours


Brand Name: Aceup Energy


Included Components: Manual, Oil funnel * 2, Spark plug wrench


Model Name: AI4000s


Model Number: AI4000s


Manufacturer: Aceup Energy


Manufacturer Part Number: AI4000s


Unit Count: 1.0 Count


Item Type Name: gas generator


Warranty Description: 1 year limited warranty


Item Weight: 48 Pounds


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


Color: Yellow and Black


Material Type: iron


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jun 2

This item is non-returnable:

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

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great Buy
Style: 4000w Inverter Generator
Arrived as scheduled with everything but gas. I put oil in and added some gas and it started right up. I ran it about 3 or 4 hours so far with a medium load and it handled it just fine. Trying to wait for the 25 hour break-in to put it a bit further to the test. So far everything is good and is relatively quiet compared to another one I had about the same size. Just have to talk a bit louder than normal when you're next to it. Very pleased so far, I hope it will last for a long time. ... show more
Reviewed in the United States on April 4, 2026 by Rodney
    • 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.
    • Reliable small engine so far
Style: 4000w Inverter Generator
Able to start quickly after adding oil and gas, I used it for a few hours with no issues. I've been cautious during the break-in period but am satisfied with its quiet operation compared to a similar model I used before. It just requires speaking a little louder nearby. Happy with how it performs and hoping it will stay durable over time. ... show more
Reviewed in the United States on April 30, 2026 by Kerry Elledge
    • Powerful and Quiet Generator for Home and RV Use
Style: 4000w Inverter Generator
This generator is a game-changer! 😍 It's super powerful, yet surprisingly quiet, making it perfect for both home and RV use. The Aceup Energy 4000 Watt Inverter Generator is EPA compliant, so you can enjoy its benefits guilt-free. It's portable, so you can easily take it wherever you go without any hassle. The 149cc gas-powered engine ensures reliable performance whenever you need it. 🔌💡One minor thing to consider is that the price might be a bit high for some budgets. 💸 However, considering the quality and convenience it offers, it's definitely worth the investment. If you want a reliable, quiet, and efficient generator for your home or RV, this one is a solid choice! 🏡🚐 ... show more
Reviewed in the United States on October 21, 2025 by Naomi R. Wood
    • Reliable start and decent performance so far
Style: 4000w Inverter Generator
I received the product on time, though it didn’t come with gas. I added oil and some fuel, and it started easily. I’ve used it for around four hours with moderate load, and it managed well. I plan to wait until the 25-hour break-in to test it more thoroughly. It’s pretty quiet compared to a similar model I had before, but you do need to speak a little louder nearby. I’m happy with how it’s performing and hope it lasts a long time. ... show more
Reviewed in the United States on April 30, 2026 by Kathleen A Desmarais
    • Powerful Aceup 4000 Generator with Impressive Value
Style: 4000w Inverter Generator
Upgrade from a 2000 watt generator to the Aceup 4000 was a game-changer! This generator offers double the power at an unbeatable price point. Running our RV effortlessly with a 15000 BTU A/C unit and all lights on, it impresses with its quiet operation and user-friendly display. The easy-start feature is a winner, and at just around 50lbs, it's a breeze to transport. The build quality rivals models triple the cost, making it a steal for those seeking reliable power on the go. ... show more
Reviewed in the United States on October 22, 2025 by John Hatfield
    • 20 hours of continuous m use and still going
Style: 4000w Inverter Generator
This generator is great, after adding oil and gas it started right up, I am currently under a blizzard with no power and I am running my heat furnace, charging devices and my fridge with no problems and on ECO mode it lasts 5-7 hours on a full tank. I’m on about 20 hours of use and before refueling I let it cool off for about 30 min and then start it again. No issues so far. ... show more
Reviewed in the United States on February 24, 2026 by Samuel A.
    • Worst experience ever! Worst experience ever!
Style: 4000w Inverter Generator
Review Image by Kevin Hudson
Review Image by Kevin Hudson
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 Reviewed in the United States on December 23, 2024 by Kevin Hudson

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