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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.

General
Engine
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.
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Free Shipping Across the United States.Read our full Shipping Policy here.
Market-Leading 30-Day Returns Process.Read more about our Returns Policy here.
Choosing the right retailer matters, especially for critical power and off-grid systems. Here’s what sets Energy Systems Central apart.
Yes. We provide free standard shipping on all orders shipped within the United States. Shipping costs are included in the listed price with no hidden fees at checkout.
Most orders are processed within 1 to 2 business days. Delivery times typically range from 3 to 7 business days depending on your location, carrier scheduling, and product size.
We offer a 30 day return window for eligible products that are unused and in original condition. Our support team will guide you through the return or exchange process if needed.
Absolutely. Yes. Our knowledgeable product specialists are available by phone, live chat, or email to help you select the right equipment for your application.
Most products include a manufacturer warranty, typically starting at one year. Warranty terms vary by brand and model and are listed on each product page.
Yes. We are an authorized retailer and only sell brand new, genuine products sourced directly from manufacturers or their approved distributors.
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