Aceup Energy 4000W Peak Portable Inverter Generator, 3200W Running Watts, 149cc, 55 dB, RV Ready, EPA Compliant, for Camping and Home Backup
Aceup Energy 4000W Peak Portable Inverter Generator, 3200W Running Watts, 149cc, 55 dB, RV Ready, EPA Compliant, for Camping and Home Backup
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Aceup Energy

Aceup Energy 4000W Peak Portable Inverter Generator, 3200W Running Watts, 149cc, 55 dB, RV Ready, EPA Compliant, for Camping and Home Backup

167 ratings

Key item features

  • Robust Power: A 149cc 4-stroke OHV engine delivers 4000 peak watts and 3200 running watts, ensuring reliable power output.
  • Extended Runtime: Provides up to 5 hours of operation at half-load on a 1.32-gallon fuel tank, utilizing recoil start.
  • Quiet Operation: Fully-enclosed design ensures a low 55 dB noise level, making it suitable for various quiet environments.
  • Versatile Outlets: Includes one 120V AC 20A outlet, an RV receptacle, and one 12V DC 8.3A car charger outlet for diverse power needs.
  • Smart Monitoring: An intelligent gauge tracks voltage, run-time, hertz, and power output, complemented by a low oil LED and an economic mode.
  • Electronic Safe: Produces clean power required for sensitive electronics like phones. This unit is EPA compliant and parallel ready for increased power.
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Specs

Continuous wattage, 3200 WFuel type, GasolineRun time, 5 hrSurge wattage, 4000 WDecibel rating, 55 dBOutlets, 1

About this item

Product details

The Aceup Energy AI4000S inverter generator offers reliable power with 4000 peak watts and 3200 running watts, driven by a 149cc 4-stroke OHV engine. Its fully-enclosed design ensures a quiet 55dB operation, making it ideal for RVs, camping, or emergency home backup. Weighing only 50.7 pounds, this portable generator provides up to 5 hours of runtime at half-load and delivers clean power suitable for sensitive electronics through its 120V AC, 12V DC, and USB outlets. It also features an eco mode for fuel efficiency and is parallel ready to connect two units for increased power.
  • 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 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, which avoids the risk
  • All generators are functionally tested in the factory to guarantee quality with EPA compliant; Backed by a 1 year limited and lifetime technical guidance from experts
  • NOTICE: The break-in period will last about 25 hours of use. DO NOT exceed 75% of the generator’s rated capacity during this period.
  • NOTICE: To avoid engine problems,the fuel system should be emptied before storage of 30 days or longer.
  • NOTICE:All engine functionally tested in the factory and may contain minimum residual oil or fuel odor, which is a normal phenomenon.
  • Our brand is Aceup Energy, all products made in our own factory with more than 20 years experience
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

Continuous wattage

3200 W

Fuel type

Gasoline

Run time

5 hr

Surge wattage

4000 W

Warranty

Warranty information

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Customer ratings & reviews

4.3 out of 5 stars
stars
167 ratings41 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars66% (110)
  2. 4 stars17% (28)
  3. 3 stars5% (9)
  4. 2 stars2% (3)
  5. 1 star10% (17)

Reviews summary

Pros

  • : The unit sells at a reasonable price for its size.
  • : The unit is compact and easy to lift and maneuver.
  • : The unit powers lamps, fans, and warmers outdoors.
  • : It delivers sufficient power to run rv appliances reliably.

Cons

  • : The unit failed to start after multiple pulls.
  • : The ignition component breaks easily.
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Showing 1-3 of 41 reviews

Jun 19, 2026
Reviewer name: James
Item details
Capacity: 4000W Portable Inverter Generator
Sold byAceup EnergyDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Generator First Start

I put in the oil and filled it with gas. It started before I had fully pulled the rope. Follow the break-in instructions and this unit should last a long time.

Helpful?1TMQTZM2C9BE7929214432
Jan 30, 2026
Reviewer name: DaveP
Item details
Capacity: 4000W Portable Inverter Generator
Sold byAceup EnergyDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great Inverter Generator!

Arrived undamaged. Started on first pull which was very satisfying. I decided to change oil during break-in at 1hr, 3 hr and 5 hr of runtime. It did arrive with a container of oil. Break-in was done with various loads per the instructions. This was a great purchase (during Black Friday week) and I now have a great backup power source for a power outage. I plan on using it to charge my Jackery power stations.

Helpful?1TMQTZM2C9BE7929214432
Jun 25, 2026
Reviewer name: anonymous
Item details
Capacity: 4000W Portable Inverter Generator
Sold byAceup EnergyDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great generator, small and powerful not as quiet as some of the name brands, you can't have a conversation and stand next to it because of the noise level it outputs, but it's definitely a tool you want to have, it doesn't take up a whole lot of space. I haven't had any issues with it.

Helpful?1TMQTZM2C9BE7929214432
Current price is Now $399.99
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was $599.99
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