Energize almost everything with the EF ECOFLOW DELTA Pro 3 Portable Power Station. Supporting 120V/240V voltage with a 4000W output (6000W with X-Boost, scalable up to 12000W), it powers nearly all essential home appliances, such as a 3-ton central AC or a 1 HP water pump . With a 4096Wh LFP battery capacity, expandable to 48kWh with extra batteries or smart generators, you can forget fuel worries and enjoy 2-4 days of whole-home backup power .
Why Choose EF ECOFLOW DELTA Pro 3?
The DELTA Pro 3 is a pricey but versatile, highly expandable smart generator that offers several recharging methods and a wide assortment of power ports . With X-Quiet technology, it operates at a peaceful hum as low as 30 dB, ensuring undisturbed sleep even beside your bed . The ultra-fast 10 ms switch-over capability provides instant backup for your NAS systems, servers, and entertainment devices . Crafted with automotive-grade LFP cells and IP65-rated CTC battery pack technology, it safeguards battery health and extends lifespan, backed by a 5-year warranty .
Key Features
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Energize Almost Everything – Supports 120V/240V voltage with 4000W output (6000W with X-Boost, scalable up to 12000W). Powers nearly all essential home appliances, such as a 3-ton central AC or a 1 HP water pump .
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Forget Refueling – 4096Wh LFP battery capacity, expandable to 48kWh with extra batteries or smart generators. Provides 2-4 days of whole-home backup power. With 7 unique and 18 combo charging methods like AC wall outlets, solar panels, gas generators, EV charging piles, or the EcoFlow smart home panel 2 .
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Plug and Play – Hassle-free power that’s easy to set up, even a kid can manage it. No installation or maintenance required. Portable handle design makes it perfect for clean, renewable energy anywhere. Control and monitor with the EcoFlow app, even remotely .
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Silent as a Whisper – X-Quiet technology operates at a peaceful hum as low as 30 dB. Ensures undisturbed sleep even beside your bed. Perfect for both indoor and outdoor use .
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Uninterrupted Life – Ultra-fast 10 ms switch-over capability. Enjoy instant backup for your NAS systems, servers, and entertainment devices. Safeguards against power disruptions .
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Explore the Secure Feeling – Automotive-grade LFP cells and IP65-rated CTC battery pack technology. 4000 cycles to 80% capacity. 5-year warranty and exceptional customer service .
What’s Included
Complete power station kit including EcoFlow DELTA Pro 3. Assembly required.
Specifications
| Specification | Details |
|---|---|
| Brand | EF ECOFLOW |
| Manufacturer | EcoFlow |
| Model Number | EFD521 |
| Manufacturer Part Number | EFD521 |
| UPC | 842783142993 |
| Color | Black |
| Material | Lithium Iron Phosphate |
| Power Source | Solar Powered |
| Fuel Type | Non-gasoline |
| Wattage | 4096 Watt-Hours |
| Output Wattage | 4000 Watts |
| Running Wattage | 4000 Watts |
| Starting Wattage | 6000 Watts |
| Surge Wattage | 8000 Watts |
| X-Boost Output | 6000 Watts |
| Scalable Output | Up to 12000 Watts |
| Voltage | 120/240 Volts |
| Frequency | 60 Hz |
| Total Power Outlets | 7 |
| AC Outputs | 4 × NEMA 5-20R, 1 × NEMA TT-30R, 1 × NEMA 6-20R, 1 × NEMA L14-30R |
| USB-C Output | 2 × 100W Max |
| USB-A Output | 2 × 18W Max |
| 12V DC Output | 378W Total (Anderson Port 30A, DC5521 5A) |
| Battery Capacity | 4096Wh |
| Battery Type | LiFePO4 (LFP) |
| Battery Cycles | 4000 Cycles to 80% |
| Battery Lifespan | 11 Years Daily Use |
| Battery IP Rating | IP65 |
| Expandable Capacity | Up to 48kWh |
| UPS Transfer Time | <10ms |
| Noise Level | 30 dB (X-Quiet) |
| Charging Time (AC) | 0-80% in 1 Hour (X-Stream) |
| Solar Input | 2600W Max (2 Ports) |
| AC Charging Input | 2900W Max |
| Car Charging Input | 12V 8A / 48V 20A |
| Product Dimensions (L x W x H) | 16.16″ x 13.43″ x 27.38″ |
| Item Weight | 115 pounds (51.5 kg) |
| Warranty | 5-Year Manufacturer |
