Aceup Energy 4000W Peak Portable Inverter Gas Generator, 3200W Running, Quiet 55dB, RV Ready, Parallel Ready, Eco Mode, Home Backup, Camping, EPA Compliant
Aceup Energy 4000W Peak Portable Inverter Gas Generator, 3200W Running, Quiet 55dB, RV Ready, Parallel Ready, Eco Mode, Home Backup, Camping, EPA Compliant
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Aceup Energy

Aceup Energy 4000W Peak Portable Inverter Gas Generator, 3200W Running, Quiet 55dB, RV Ready, Parallel Ready, Eco Mode, Home Backup, Camping, EPA Compliant

101 ratings

Key item features

  • Potent Performance: The 149cc 4-stroke OHV engine delivers 4000 peak watts and 3200 running watts for reliable power.
  • Extended Operation: Operates up to 5 hours at half-load on a 1.32-gallon tank, with an economic mode for fuel savings.
  • Diverse Connectivity: Features 120V AC outlets, an RV receptacle, a 12V DC car charger outlet, and USB for various devices.
  • Quiet Performance: A fully-enclosed design limits noise to 55dB, making it suitable for quiet environments.
  • Intelligent Monitoring: An intelligent gauge tracks voltage, run-time, and hertz, complemented by a low oil LED.
  • Clean Output: Generates clean power, safe for sensitive electronics such as phones and televisions.
  • Scalable Power: Parallel ready, enabling two units to connect for double the power output (kit sold separately).
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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-1 portable inverter generator delivers powerful and reliable performance with its 149cc 4-stroke OHV engine that produces 4000 peak watts and 3200 rated watts. Weighing only 50.7 pounds, this generator features a fully-enclosed design that reduces noise to a quiet 55dB, making it ideal for use in RV parks, camping, or emergency backup power. With a runtime of up to 5 hours at half-load, the AI4000S-1 includes a variety of outlets, including 120V AC, 12V DC, and USB, to power a range of devices and appliances. Backed by a 1-year limited warranty and EPA compliance, this generator is a versatile and dependable choice for your power needs.
  • 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:
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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

3.9 out of 5 stars
stars
101 ratings33 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars62% (63)
  2. 4 stars9% (9)
  3. 3 stars3% (3)
  4. 2 stars3% (3)
  5. 1 star23% (23)

Reviews summary

Pros

  • : Generator supplies a clean 120v sine wave.
  • : The generator emits minimal sound during operation.
  • : The unit includes a 1.3-gallon fuel reservoir.
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Showing 1-3 of 33 reviews

Oct 27, 2026
Reviewer name: ryan
Item details
Surge wattage: 4000 W
Sold byAceup EnergyDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Quiet, Efficient, and Handles a 15A Load Easily

No complaints thus far. I've tested the generator with a 120VAC/15A resistive load, roughly 1,800 watts, and it handles it with ease. Fuel economy seems to be good, and I've been pleasantly surprised by the noise level. At idle, the generator is very quiet. When a load with some inrush is applied, the engine ramps up briefly as expected and then settles back down once the load stabilizes. Overall, it's a fairly quiet little generator with plenty of usable power for its size. So far, I'm very pleased with the performance and would definitely recommend it.

Helpful?1B56C6A8X3SZ14326264934
Oct 24, 2026
Reviewer name: shannon
Item details
Surge wattage: 4000 W
Sold byAceup EnergyDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Good little generator

This thing is great. Super quiet. Runs well. I use it for a fan and charging tools and stuff on my jobs.

Helpful?1B56C6A8X3SZ14326264934
Oct 6, 2026
Reviewer name: anonymous
Item details
Surge wattage: 4000 W
Sold byAceup EnergyDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

perfect for my trailer

Helpful?1B56C6A8X3SZ14326264934
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