EcoFlow Dual Fuel 3200W/3500W Smart Generator 4000

The EcoFlow Dual Fuel 3200W/3500W Smart Generator 4000 Runs on Gasoline or LPG and Charges EcoFlow Power Stations Directly by DC

The EcoFlow Smart Generator 4000 (Dual Fuel) is an inverter generator with a 196 cc engine that runs on unleaded gasoline or LPG. On gasoline it is rated at 3200W with a 3500W maximum. On LPG it is rated at 2900W with a 3200W maximum, all at 120V and 60Hz. Along with its AC outlets, it has an XT150 DC output that charges compatible EcoFlow power stations and extra batteries.

It suits homeowners with an EcoFlow DELTA 2 Max, DELTA Pro or Power Kits system who want a fuel generator that starts on its own when the batteries run low. It also suits anyone who wants two fuels, app control and a carbon monoxide shutdown.

EcoFlow Dual Fuel 3200W/3500W Smart Generator 4000 Features

Dual Fuel With Gasoline or LPG

Turn the Engine Switch to GAS ON or LPG ON. The tank holds 1.59 gal (6 L) of unleaded gasoline, and EcoFlow rates continuous operation at 2.8 hours at nominal load on gasoline. For LPG, the included hose connects to a standard 20, 30 or 40 lb LP cylinder fitted with an overfill prevention device (OPD). Two fuels give you a fallback.

Direct DC Charging for EcoFlow Power Stations

The XT150 Extra Battery Port puts out 40V to 60V DC at a rated 56A. Connect a DELTA 2 Max or DELTA 2 Max Extra Battery with the included Extra Battery Connection Cable, or a DELTA Pro, DELTA Pro Extra Battery or Power Kits with the included DELTA Pro to Smart Generator Adapter. The AC outlets stay available while it charges. Combined AC and DC output is 3200W on gasoline or 2900W on LPG, and AC output takes priority.

Four Ways to Start, Including Self-Start

Start it with the Electric Start Button, the recoil Starter Grip, the EcoFlow app or self-start. With self-start, a connected EcoFlow system asks the generator to start when its battery falls to the lower limit you set and to stop at the upper limit. EcoFlow recommends an 80% upper limit for better fuel efficiency. The generator also shuts down after 10 minutes if both the AC and DC outputs are idle.

Carbon Monoxide Shutdown and Built-In Alerts

A carbon monoxide sensor stops the generator when the CO concentration is about to exceed the standard, and the CO alert light flashes for 5 minutes. Wait 5 minutes before you restart it. The display also shows over temperature, low temperature, engine oil, output overload and maintenance alerts. A thermal protector cuts AC output on overtemperature or overload until it cools and you press it to reset.

ECO Mode and High Performance Mode

ECO Mode, on by default, matches engine RPM to the power output to reduce fuel use and noise. When your load reaches 50% of the rated level or more, you can switch to high performance mode in the EcoFlow app. EcoFlow rates the noise level at 71 dB from 7 meters at nominal load.

App Control and a Detailed Display

Connect by Wi-Fi or Bluetooth to start or stop the generator, turn AC output on or off, turn on LPG Level Monitoring and get maintenance reminders and firmware updates. The screen shows output power, fuel level, remaining running time, internal battery level and error codes.

Real-World Applications

Home backup with an EcoFlow system. Connect it to a DELTA Pro, DELTA 2 Max or Power Kits system so the generator starts when the battery reaches its lower limit and stops at the upper limit.

Long outages. Switch between gasoline and LPG from standard 20, 30 or 40 lb cylinders to keep your batteries charged when one fuel runs short.

Outdoor projects. Run tools and lights from the 120V AC outlets while the screen shows remaining running time.

How It Compares to Common Alternatives

Versus a gasoline-only generator. A gasoline-only generator depends on one fuel. The Smart Generator 4000 also runs on LPG, rated at 2900W with a 3200W maximum.

Versus a generator with only AC outlets. An AC-only generator charges a power station through the station's AC input. The Smart Generator 4000 adds an XT150 DC output for compatible EcoFlow units and starts and stops based on their battery level.

Versus a power station on its own. A power station stores a fixed amount of energy. The generator adds fuel-based charging, but it must run outdoors.

Is This Generator the Right Fit

• California. This generator is not CARB-approved, so it can't be sold or shipped to California.
• Outdoors only. Exhaust contains carbon monoxide. Never use it indoors or in a closed space, keep it away from doors, windows and vents, and keep combustibles at least 3 ft (1 m) away.
• Size and weight. It weighs 38 kg and measures 633 x 381 x 529 mm. Don't place it on its side, because engine oil may leak.
• Home connection. Don't connect it to a building's electrical system unless a licensed electrician has installed an isolation switch.
• Before first use. It ships with no engine oil. Add oil before starting, connect the internal battery for electric start, and ground the generator.

This may be a good fit if

• You own a DELTA 2 Max, DELTA Pro or Power Kits system
• You want gasoline and LPG in one generator
• You want automatic starts when your batteries run low
• You want app control and fuel monitoring

Common Questions

Which EcoFlow Products Can It Charge by DC?

The manual covers the DELTA 2 Max and DELTA 2 Max Extra Battery with the Extra Battery Connection Cable, and the DELTA Pro, DELTA Pro Extra Battery and Power Kits with the DELTA Pro to Smart Generator Adapter. Both connectors are in the box.

How Much Can It Run?

For resistive loads with a power factor of 1, keep the total at or below 3200W on gasoline or 2900W on LPG. For a power factor of 0.8 to 0.95, the limit is 2560W or 2320W. For a power factor of 0.4 to 0.75, it is 1280W or 1160W.

What Engine Oil Does It Use?

It ships without oil. Use SAE 10W-40, API SJ or higher. Capacity is 550 ml (0.581 quarts), and an oil funnel is included.

Can I Use It in Cold Weather?

The ambient range is 5°F to 104°F (-15°C to 40°C) on gasoline and 23°F to 104°F (-5°C to 40°C) on LPG. Below 0°C, let the engine warm up for 3 minutes with no load.

What's Included

• 1 x EcoFlow Smart Generator 4000 (Dual Fuel)
• 1 x Extra Battery Connection Cable
• 1 x DELTA Pro to Smart Generator Adapter
• 1 x LPG Hose
• 1 x Oil Funnel
• 1 x Screwdriver
• 1 x Spark Plug Socket
• 1 x Breaker Bar
• 1 x Double-Ended Spanner
• 1 x User Manual and Warranty Card

Dual Fuel Backup That Works With Your EcoFlow System

The EcoFlow Dual Fuel 3200W/3500W Smart Generator 4000 pairs gasoline and LPG operation with a direct DC charging port, self-start and app control. If you have questions about connecting it to your EcoFlow power station or planning your backup setup, the Outbound Power team is happy to help.

EcoFlow Smart Generator 4000 Dual Fuel Manual