SKU: 74910705211

EcoFlow Smart Generator 4000 (Dual Fuel)

$566.55 $629.50
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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Description

EcoFlow Smart Generator 4000 (Dual Fuel)The EcoFlow Smart Generator 4000 offers reliable, high performance backup power designed for home emergencies, off grid use, and outdoor applications. Featuring dual fuel compatibility, it operates using either unleaded gasoline or LPG, giving you greater flexibility and longer runtime options. Delivering up to 3200W of rated power with gasoline and supported by X Boost technology for peak performance, it ensures your essential devices and battery

The EcoFlow Smart Generator 4000 offers reliable, high-performance backup power designed for home emergencies, off-grid use, and outdoor applications. Featuring dual-fuel compatibility, it operates using either unleaded gasoline or LPG, giving you greater flexibility and longer runtime options. Delivering up to 3200W of rated power with gasoline and supported by X-Boost technology for peak performance, it ensures your essential devices and battery systems stay powered when you need them most.

Industry's Fastest 3200W DC Fast Charging System

Higher efficiency, more reliable when connected with EcoFlow DELTA Pro 3

Unlock unmatched power and reliability with the EcoFlow Smart Generator 4000 (Dual Fuel) and EcoFlow DELTA Pro 3 hybrid setup. Featuring industry-leading 3200W DC fast charging and up to 40% improved efficiency, they excel in various scenarios, from backup power to on-the-go charging.

More Energy-Saving & Efficient

EcoFlow Smart Generator (Dual Fuel) 4000 not only offers significant fuel savings but also generates fewer emissions. Compared to traditional fuel generators, it can save 40% of fuel when fully charging EcoFlow DELTA Pro 3. This means that with the same 1 gallon of fuel, this smart generator provides 1kWh more power.

Power Backup Made Smart and Simple

With four intelligent self-starting backup modes (when paired with EcoFlow DELTA Pro 3), power backup has never been easier.

Customizable start/stop

At night, once the power consumption reaches a certain level, the smart generator will automatically start to replenish power, eliminating the need to get up in the middle of the night to reset it.

Night-care mode

Monitor the remaining power of the EcoFlow DELTA Pro 3 energy storage in real-time, predict future power consumption and measure the power generation from PV, and auto-recharge it in time to ensure a peaceful night's sleep and rest for your family and neighbors, avoiding noise during charging at night or during peak power consumption periods.

PV-priority mode

Recharge the EcoFlow DELTA Pro 3 with PV panels, automatically prioritizing PV charging for savings and environmental benefits while minimizing noise from continuous generator operation. Need more power quickly as an outage approaches? One tap in the EcoFlow app switches back to PV and Smart Generator charging combo for swift reinforcement.

Smart reverse charging

It provides a reverse power supply to the generator battery through EcoFlow DELTA Pro 3 to wake up the generator and start charging it at the same time. Also, to prevent the Smart Generator battery failure caused by long-term storage or extremely low temperatures, it protects household electricity during severe weather scenarios.

Dual Fuel for Double Peace of Mind

Rest easy knowing that LPG and gasoline are readily accessible, ensuring you can quickly obtain fuel for backup power and alleviating concerns about fuel shortages during emergencies.

Gasoline Power

The smart engine produces 8kWh in single gasoline tank, you could power your home appliances for 8-hours at 25% load.

Propane Power

Simply plug in a 20lb propone tank and allow you access to a 24kWh power, secured and keep your family a whole day of cozy life in a outage.

Control from Anywhere with Just One Tap

Use the EcoFlow app to monitor and control energy consumption and equipment operation. Get real-time key alerts like CO concentration, high & low temperature warnings, etc., to ensure safety. View faults and maintenance prompts for easy upkeep.

Multiple Start/Stop Methods for Easy Operation

EcoFlow Smart Generator 4000 (Dual Fuel) offers intelligent and elegant start/stop methods for various scenarios, providing greater convenience.

Stay on Guard With Real-time Alerts

Receive 5 safety notifications directly through the EcoFlow app, ensuring remote or indoor users stay informed in real-time. All features(except fuel alerts) trigger automatic shutdowns to prioritize safety for you.

User-Friendly Design, Enhanced Portability

The ergonomic design with a built-in pull-rod allows easy transport from the garage or basement, making it simple to activate backup power. Its compact size ensures it doesn't take up too much space for storage and stays well-organized.

Features

  • Not CARB-certified - shipping to California is unavailable
  • Supports both LPG and gasoline for versatile fueling
  • 3200W DC power delivery for high-output performance
  • Enhanced efficiency—up to 40% higher energy utilization
  • Four automatic self-start modes for backup readiness
  • Remote monitoring and control via EcoFlow mobile app
  • Integrated safety alerts for secure operation
  • Portable ergonomic design for easier handling

Specifications

General

  • SKU: EFSG4000-US-EPA
  • Net Weight: 83 lbs
  • Dimensions: 24.9 in x— 15 in x— 20.8 in
  • Generator Type: Inverter
  • Frequency: 60Hz
  • Rated Voltage: 120V
  • Rated Output: 3200W on gasoline / 2900W on LPG
  • Peak Output: 4000W with X-Boost Technology
  • DC Output Voltage: 40-60V
  • Maximum DC Current: 56A

Engine

  • Engine Size: 196cc
  • Engine Type: Four-stroke
  • Fuel: Unleaded gasoline or LPG
  • Fuel Tank Capacity: 6L / 1.58 gal
  • Engine Oil Capacity: 0.55L / 0.145 gal
  • Noise Level: 70 dB at 7m (full load)
  • Runtime on Gas: 2.8 hours at full load / 8 hours at 1/4 load

Warranty

Energy Systems Central Stores is an authorized retailer of EcoFlow products. Because of this, we pass on EcoFlow's manufacturer 3-Year warranty to you.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 74910705211

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4.4 ★★★★★
Based on 25 reviews
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Product Reviews
T
Verified Purchase
Time4T2
Lexington, US
★★★★★ 5
Great little frother
Color: Black
This is a great little frother. It is powerful and really frothes up what ever you are trying to stir, sometimes too much for what I want it to do. Do not get water or liquid into the motor area or the item will stop working. Recommend this item.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 6, 2023
S
Verified Purchase
Suzette Young
Natrona Heights, US
★★★★★ 5
Tiny, but mighty
Color: Black
I ordered this in July, 2023, and it works very well, great speed. I use it every single morning, to mix my mushroom coffee, cinnamon, and collagen protein. If you're looking for a really good frother, this probably isn't going to meet that demand. It does give some froth, but nothing crazy. I have read reviews that mention "no longer worked after replacing batteries", but mine is still great even after replacing them, which I didn't have to do until after 3 months of usage. I don't know if the color matters in relation to that, but I bought the red one. I would definitely recommend this product.
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Reviewed in the United States on November 14, 2023
R
Verified Purchase
Ronald A. Debellis
Carnegie, US
★★★★★ 3
Works well but….
Color: Sliver
Only had it a few days and although it seems to work well the foam circle around the power button fell off into my drink.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
B
Verified Purchase
Bunnybee
Lake Worth, US
★★★★★ 5
The BEST Frother!!! (with a ONE YEAR UPDATE as of February 2026!)
Color: Black, Size: normal
I absolutely LOVE this little gem of a product. LOVE IT!! I use this thing every single day to mix up powdered collagen into a latte. It is so much fun to use. Every time I use it I sing out loud, "Oh little frother....where have you been all my life??" Ha ha! My brother had one at his house that we used to make whipped cream from heavy cream and I was honestly amazed at how quickly 2-3 ounces of heavy cream turned into delicious whipped cream for our coffees (like less than 10 seconds!) My brother has the kind that rests on a little stand, but honestly I did not want that type because the stand seemed unstable and honestly, a PITA to have standing on the counter. I like that this one does not have a stand. At first I thought the battery was going to die instantly, because it slowed down at first when I tried the first few times. But, I figured out how to use it and the trick of it is to not submerge it too far down into the drink where the little motor will struggle to keep up. Instead, I move it around a bit, giving it little periods of rest towards the top of the drink where the motor can more easily whip the liquid around. I have had this several months and the original battery just keeps on chuggin' even with daily use. The speed is crazy fast and makes the milk froth up so nicely. My collagen gets mixed up within seconds. I am talking 3-5 seconds at most. This little guy is an absolute MUST for anyone wanting to mix up protein powder, collagen, powdered vitamins/quercetin (which is famous for being extremely difficult to mix into orange juice.) It works that great. I seriously just love using it so much and should have bought one years ago. It is rare to buy a product that is super reasonable in cost and turns out to work really well and be worth every penny. It is also very easy to clean--a quick rinse under the faucet or a little sudsy scrub and you are good to go for the next time. I sought out this particular brand after reading another customer's review of a different brand frother. She pointed out that this brand was head and shoulders above the other types she has tried and I believe she is probably right. The "ON" button is at the top so it does not get in the way or splashed with liquid or anything. I use this with other drinks too, like to mix lemon juice with stevia sweetener into water, MSM powder into pomegranite juice, and just regular coffee with half and half to give the coffee a more luxurious mouthfeel when I do not feel like taking the time to make a latte or cappuccino. This frother is seriously the best. I wish there was a different color to select other than black but it was not a deal breaker, obviously. I would 100% purchase this again if needed. UPDATE, 02/21/26: I have now had this little frother for ONE FULL YEAR! And I am here to say that, in my humble opinion, it has won my personal award for "Best Product Purchased For Me" for the year 2025! I use this little guy EVERY day to make a latte, and sometimes multiple times a day to mix up other drinks, and he is just chuggin' along on the same battery as the day he arrived in the mail back in February 2025. Now my husband is hooked on it too. Here are the drinks we have used it for in the past year: - whirling up MCT oil into coffee; - mixing baking soda, water, and flavored stevia drops (it's an emergency stomach ulcer elixir that I drink sometimes) - frothing up raw, organic cocoa powder with milk and sugar - my daily lattes with collagen powder - mixing up any number of liquid vitamin tinctures that I take with water - whipping up a teaspoon of wheatgrass powder into 2 or 3 ounces of water for a quick shot - as stated earlier, mixing thoroughly quercetin and vitamin C powders into orange juice I am sure I have used it for a few other drinks but these are the ones we use it for the most. I stand by my original review and opinion. This is, hands down, THE BEST MINI FROTHER!! Congratulations little frother, on winning the award for being the best purchase for me in the year 2025! I will come back here in February 2027 with a brief update on how my little frother is working 24 months from purchase. ANOTHER UPDATE, 05/26/26: The two double AA batteries FINALLY took their last breath on May 26, 2026. The original batteries lasted a full one year and four months (and someone has used it AT LEAST once per day, every day, without fail.) Two brand new batteries went in, and I guess it must be because the batteries are 100% fresh, but I swear that now this frother is working even better than the day I got it!
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Reviewed in the United States on July 16, 2025
H
Verified Purchase
Hobbynut
Charlottesville, US
★★★★★ 5
Great Mixer At A Great Price.
Color: Black, Size: normal
I purchased this mixer over 6 months ago. I use it at least 2 to 3 times a day to mix fiber into a flavored drink. It also gets used for mixing gravy and Chinese sauces. So from light to medium duty and no problems at all. One battery lasted over 4 months. I did try an alternate wand mixer($15 to $20) with variable speed to try and slow the mixing down a bit. It's low speed(fast) was the same as this mixer so I sent it back and kept this one. In addition to being more economical the simplicity of the single speed should give it good reliability. Lastly, if it gets damaged you're only out ~$7.00
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026

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