Add to cart
Generac Guardian 7043 22kW Home Standby Generator w/ 200A Amp Automatic Transfer Switch Generac Guardian 7043 22kW Home Standby Generator w/ 200A Amp Automatic Transfer Switch $6,001.95
GENMAX GM17000iETC 17000 Watt Tri-Fuel Inverter Generator GENMAX GM17000iETC 17000 Watt Tri-Fuel Inverter Generator $4,299.95
ecoflow|SKU:90708049309

EcoFlow Smart Generator 4000: Dual Fuel, 3200W DC Fast Charging

Dual-Fuel Generator Built for Off-Grid Reliability

Dual fuel flexibility — Runs on gasoline or LPG propane
3200W DC fast charge — Industry-leading recharge speed
40% fuel savings — Less fuel per kWh delivered
Smart app monitoring — CO alerts and maintenance prompts
  • FREE System Design Consultation -- Engineers size your setup for actual consumption
  • FREE Shipping -- LTL freight included, no surprise charges
  • Compatibility Guarantee -- Pre-vetted to work with your system

$1,104.95

0 in stock

Add to Cart
EcoFlow Smart Generator 4000 (Dual Fuel)
EcoFlow Smart Generator 4000 (Dual Fuel)
$1,104.95

30-day money back · No restocking fee

🔒 100% Secure Checkout

Visa Mastercard American Express Apple Pay Google Pay Klarna Link by Stripe
Free Returns 30-day hassle-free returns.
Free Delivery Every order, every time.
Ships in 3–5 Days Heavy-duty crating included.
4.9/5 Stars 2,400+ verified reviews.

In the box

  • EcoFlow Smart Generator 4000 (Dual Fuel)
EcoFlow Smart Generator 4000 (Dual Fuel)
EcoFlow Smart Generator 4000: Dual Fuel, 3200W DC Fast Charging
$1,104.95

Dual-Fuel Generator Built for Off-Grid Reliability

The EcoFlow Smart Generator 4000 delivers 3200W rated power on gasoline and 2900W on LPG, with a 4000W peak via X-Boost technology. Its field-tested 3200W DC fast charging system slashes recharge times when paired with compatible power stations. A single 1.58-gallon tank produces up to 8 kWh of output. With four intelligent self-starting modes—including night-care and PV-priority—this grid-independent generator handles backup power without midnight intervention. Runs on unleaded gasoline or propane, so fuel access is never a concern.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
Dual Fuel Ready
3200W DC Fast Charge
4000W X-Boost Peak
Smart Auto-Start Modes
3200W / 2900W
Rated Power (Gas / LPG)
8 kWh
Output Per Gas Tank
40%
Fuel Savings vs Traditional
Fuel Security When the Grid Goes Down for Days

Fuel Security When the Grid Goes Down for Days

Gas generators fail when fuel runs short and you cannot get to a station. The EcoFlow Smart Generator 4000 runs on unleaded gasoline or LPG propane, so you choose whichever fuel is available when supply chains break down. At Off Grid Vault, every product we carry is vetted for real-world performance before it earns a listing. This generator produces 8kWh per gasoline tank and saves 40% fuel when charging the EcoFlow DELTA Pro 3 via its 3200W DC fast charging system. Four intelligent self-starting modes—including night-care mode that automatically starts when your battery drops—mean you stop getting up at 2 AM to flip a switch. This is grid-independent power that works while you sleep.

3200W DC Fast Charging Cuts Downtime to Hours

3200W DC Fast Charging Cuts Downtime to Hours

At 3200W, this DC fast charging system leads its class—recharging the DELTA Pro 3 significantly faster than conventional generator AC output. The 196cc four-stroke engine delivers 3200W rated power on gasoline and 2900W on LPG, with 4000W peak output through X-Boost technology for motor-startup surge loads. That means your well pump, refrigerator, and shop tools start without hesitation. The 6L fuel tank holds enough gasoline to generate 8kWh of usable energy. The EcoFlow app provides real-time monitoring of CO concentration, temperature warnings, and fault codes so you maintain the unit on your schedule, not after a failure.

Smart Automation Replaces Manual Generator Babysitting

Smart Automation Replaces Manual Generator Babysitting

Four self-starting backup modes eliminate the worst part of generator ownership: babysitting. When paired with the DELTA Pro 3, this generator supports customizable start/stop thresholds, night-care mode that activates when battery state of charge hits your set level, PV-priority mode that lets solar handle daytime loads while the generator stays in reserve, and smart reverse charging. At 83 lbs with a compact 24.9 x 15 x 20.8 in footprint, it fits in a truck bed or corner of your garage. Dual-fuel input means you run gasoline for maximum wattage or switch to LPG propane for cleaner, longer-duration backup with fewer emissions. Off-grid proven for extended outages.

Compatibility Check

Confirm this generator fits your setup before you buy.

  • 120V AC output works with standard North American appliances and transfer switches
  • DC output 40–60V at 56A max charges compatible portable power stations
  • Dual-fuel operation accepts unleaded gasoline and standard LPG propane tanks

Built for Real-World Scenarios

Where this generator earns its place in your system.

Home Backup Power
Off-Grid Cabin Supply
Remote Job Site
RV & Mobile Basecamp

Full specifications

At a glance

Dimensions
24.9x15x20.8 in/633x381x529 mm
Power
120V
Warranty
See product page
Full specifications15 data points across 4 categories

Dimensions

Net Weight83 lbs/38kg
Dimensions24.9x15x20.8 in/633x381x529 mm

Power & Performance

TypeInverter Generator
Frequency60Hz
Rated Voltage120V
Rated Power3200W with Gasoline, 2900W with LPG (4000W Peak Output with X-Boost Tech)
DC Output Voltage40～60V
DC Current56A max.
Engine Size196cc
Engine TypeFour-stroke
Fuel TypeUnleaded gasoline/LPG
Fuel Tank Capacity6L / 1.58gal
Engine Oil Capacity0.55L / 0.145gal

Materials

ConstructionSee product page

Compliance & Warranty

WarrantySee product page

The Off Grid Vault Promise

Every product we carry is vetted for real-world performance. If it doesn't meet our standards, it doesn't make the cut.

Free ShippingShips free to your door — no minimums, no freight surprises, including heavy items like generators.
30-Day Performance GuaranteeIf it doesn't perform as specified, we make it right. Uninstalled returns accepted within 30 days in original packaging.
Authorized Dealer SupportWe are an authorized dealer. Warranty claims go through us — not a faceless ticket queue. Real people, real accountability.
★★★★★
“Bought this to pair with my DELTA Pro 3 after the February ice storm knocked us out for five days. Night-care mode is the real deal—I woke up to a fully charged battery, not a dead fridge. Dual fuel saved me when the gas stations ran dry and I still had propane tanks. Off Grid Vault had it shipped fast and answered my wiring questions before I ordered.”
F
First L.Boone, NC

 

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.

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

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
Night-care mode
PV-priority mode
Smart reverse charging

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.

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.

Dual Fuel for Double Peace of Mind
Gasoline Power
Propane Power

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

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.

5 Quick Start Methods

① Manual pulling cord start
‚ë° Electric button start
③ Reverse charging by portable power stations
④ App start (Bluetooth/Wi-Fi)
⑤ Scheduled automatic start.

6 Shutdown Methods

① Knob switch off
‚ë° One-click shutdown (electric button)
③ automatic shutdown
④ Scheduled-time shutdown
⑤ Low output shutdown*
‚ë• App-controlled shutdown.
*When matched with a third-party portable power station, it automatically shuts down after the portable the power station is fully charged and a decrease in output power is detected.

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.

What’s in the box

Generator Specs

Net Weight

83 lbs/38kg

Dimensions

24.9x15x20.8 in/633x381x529 mm

Type

Inverter Generator

Frequency

60Hz

Rated Voltage

120V

Rated Power

3200W with Gasoline, 2900W with LPG (4000W Peak Output with X-Boost Tech)

DC Output Voltage

40ÔΩû60V

DC Current

56A max.

Engine Specs

Engine size

196cc

Type

Four-stroke

Fuel Type

Unleaded gasoline/LPG

Fuel Tank Capacity

6L / 1.58gal

Engine Oil Capacity

0.55L / 0.145gal

Noise Level (at 7m distance)

70 dB (full load)

Continuous Working Time (Gas)

2.8hr (full load), 8hr(1/4 load)

Reviews

There are no reviews yet.

Be the first to review “EcoFlow Smart Generator 4000: Dual Fuel, 3200W DC Fast Charging”

Your email address will not be published. Required fields are marked *

Frequently Asked Questions

During a four-day grid outage, the average household loses $400–$800 in spoiled food alone. This generator produces 8kWh per gasoline tank—enough to run a refrigerator, lights, and communications for a full day on roughly 1.58 gallons. At 40% fuel savings when DC-charging a DELTA Pro 3 versus conventional generator AC output, your fuel cost per kWh drops significantly. Over multiple outage events across a few years, the unit pays for itself in prevented losses and reduced fuel consumption. This is not a disposable purchase—it is field-tested equipment that holds value.
Big-box stores stock generators as seasonal inventory with no off-grid expertise on the floor. At Off Grid Vault, every product is vetted for build quality and real-world performance before we list it. We provide free system design consultation so you understand exactly how this generator integrates into your power setup—whether standalone or paired with a DELTA Pro 3 and solar array. We ship free on all orders, stand behind a 30-day performance guarantee, and handle warranty claims directly as an authorized dealer. You are not buying a box—you are buying accountability from people who actually use this equipment.
Yes. The EcoFlow Smart Generator 4000 operates as a standalone 120V inverter generator producing 3200W rated power on gasoline and 2900W on LPG, with 4000W peak output via X-Boost. You can plug appliances and tools directly into its AC outlets. The DELTA Pro 3 unlocks the advanced features—3200W DC fast charging, four intelligent self-starting modes including night-care and PV-priority, and smart reverse charging. If you already own a DELTA Pro 3, this generator amplifies your system. If you do not, it still delivers reliable 120V backup power on its own.
Warranty coverage is handled directly through Off Grid Vault as an authorized EcoFlow dealer. We process claims on your behalf—no ticket queue with a faceless marketplace seller. Specific warranty terms follow EcoFlow's manufacturer warranty for the Smart Generator 4000. The 196cc four-stroke engine, inverter electronics, and fuel system are all covered. We recommend registering your unit through the EcoFlow app, which also provides CO concentration alerts, temperature warnings, and maintenance prompts to extend engine life. Our 30-day performance guarantee applies to uninstalled units in original packaging.
With 3200W continuous rated power on gasoline and 4000W peak output through X-Boost technology, this generator handles the combined running load of a typical refrigerator (150–250W) and a well pump (800–1200W running) simultaneously. The critical moment is startup: well pumps draw 2–3 times their running wattage for a few seconds. The 4000W X-Boost peak covers that surge. For larger loads—like adding a furnace blower or sump pump—monitor total draw through the EcoFlow app. If your combined continuous load exceeds 3200W, contact us for a free system design consultation to size your setup correctly.
This generator ships free via LTL freight to your delivery address. Lead times vary based on current inventory—contact us if you need a specific delivery window before ordering. We do not use fake countdown timers or inflated stock claims. What we tell you is what happens. For homestead and cabin builds on a timeline, reach out to our team and we will confirm actual availability before you commit.
SKU: 90708049309 Category: Brand:

The Off Grid Vault Promise

Every product we carry is vetted for real-world performance. If it doesn't meet our standards, it doesn't make the cut.

Free Shipping Ships free to your door — no minimums, no freight surprises, including heavy items like generators.
30-Day Performance Guarantee If it doesn't perform as specified, we make it right. Uninstalled returns accepted within 30 days in original packaging.
Authorized Dealer Support We are an authorized dealer. Warranty claims go through us — not a faceless ticket queue. Real people, real accountability.

Related products

About ecoflow Generators

ecoflow is a trusted manufacturer of premium generators. OffGridVault is an authorized dealer offering the full ecoflow lineup with free delivery, price match guarantee, and expert support.

View all ecoflow products →

Related Categories

AC/DC Enclosure 2 products Air Handlers 8 products Air Heaters 2 products Amp Hub 2 products Awnings 15 products Batteries 3 products
Join the Grill Island Community

Expert Picks, Straight to Your Inbox

No spam. Just the gear worth knowing about.

No spam. Unsubscribe anytime.