EcoFlow
EcoFlow DELTA Pro 3 Portable Power Station (4096Wh, Expandable to 12kWh)
Why the EcoFlow DELTA Pro 3 Portable Power Station Stands Out
The most powerful and versatile portable power station for whole-home backup, off-grid living, and emergency preparedness.
Key Features
- 4096Wh Capacity – Expandable up to 12kWh with Smart Extra Batteries (up to 48kWh with multiple units)
- 4000W AC Output – Dual 120V/240V output; powers a 3-ton central AC, water pumps, and all essential home appliances simultaneously
- X-Boost Technology – Exceeds rated output up to 6000W for high-wattage heating appliances
- X-Stream Fast Charging – Charges from 0 to 80% in just 50 minutes; up to 7000W combined charging input
- LFP Battery – EV-grade LiFePO4 battery with 4000 life cycles to 80% capacity (11+ year lifespan)
- 10ms UPS – Instant switchover protects NAS systems, servers, and sensitive electronics
- 7 Unique Charging Methods – AC wall outlet, solar (2600W max), EV charger, generator, car/cigarette lighter, alternator charger, and more
- Whisper-Quiet X-Quiet Technology – As low as 30 dB, suitable for bedroom use
- Plug-and-Play Design – No installation required; place anywhere in your home
- EcoFlow App Control – Monitor and manage remotely via Wi-Fi and Bluetooth
- UL9540 Certified – Safety certified for home energy storage
AC Output Ports (US Version)
- 4 × NEMA 5-20R (120V/20A)
- 1 × TT-30 (120V/30A)
- 1 × L14-30 (120V/240V/16.7A)
- 1 × NEMA 6-20R (240V/16.7A)
Technical Specifications
| Specification | Value |
|---|---|
| Model | EFDELTAPRO3-US / EFD521 |
| Battery Capacity | 4096Wh (LiFePO4) |
| AC Output | 4000W continuous (Surge 8000W), Pure Sine Wave |
| AC Output Voltage | 120V/240V~ 60Hz, 16.7A |
| X-Boost Output | Up to 6000W |
| Battery Life Cycles | 4000 cycles to 80% capacity |
| AC Charging Input | 100-240V~15A, 50/60Hz (Charge Only); Bypass Mode: 100-120V~15A |
| Solar Input | 2600W total (High-PV: 30V-150V, 15A, 1600W max; Low-PV: 11V-60V, 20A, 1000W max) |
| USB-A Output | 2× USB-A, 5V/2.4A, 9V/2A, 12V/1.5A, 18W max |
| USB-C Output | Available |
| 12V DC Output | DC5521 + Anderson ports, 378W total |
| Connectivity | Wi-Fi 2.4GHz / Bluetooth / CAN (RJ45) |
| UPS Transfer Time | 10ms |
| Net Weight | Approx. 51.5 kg (113.5 lbs) |
| Dimensions | 695.5 × 341 × 410 mm (27.3 × 13.4 × 16.1 in) |
| Expandable Capacity | Up to 12kWh (2 extra batteries); up to 48kWh with multiple units |
| Parallel Capability | Up to 3 units (12kW output, 36kWh capacity) |
| Noise Level | As low as 30 dB (X-Quiet technology) |
| Certifications | UL9540, FCC, IC, CE, RoHS |
Charging Methods
- AC Wall Outlet (up to 1800W)
- Solar Panels – Dual PV input (up to 2600W)
- EV Charging Pile (Level 1 & Level 2)
- EcoFlow Smart Generator 4000
- Car Cigarette Lighter Socket
- EcoFlow Alternator Charger (via Extra Battery port)
- Combined multi-source charging (up to 7000W)
What's in the Box
- EcoFlow DELTA Pro 3 × 1
- AC Charging Cable × 1
- Grip Protectors × 2
- Product Document Bundle × 1
Warranty
5-Year Warranty – Includes a 3-year standard warranty plus a 2-year extended warranty upon registration in the EcoFlow App. Covers defects in materials and workmanship under normal use. Warranty service available within the contiguous United States.
Register your product at: EcoFlow Warranty Registration
Datasheet & Documentation
Massive Power for Home, Travel, and Emergency Use
The EcoFlow DELTA Pro 3 portable power station is built for users who need serious backup power in a flexible and easy-to-use design. With a large 4096Wh capacity, it can support a wide range of devices, from everyday essentials to high-demand appliances. Whether you are preparing for power outages, camping off-grid, or powering tools at a remote job site, this unit delivers dependable energy when you need it most. Its expandable design makes it even more useful over time, giving you room to grow as your power needs increase.
Expandable Capacity Up to 12kWh for Greater Flexibility
One of the biggest advantages of this portable power station is its expandable energy storage. Starting at 4096Wh, it can scale up to 12kWh, allowing you to build a stronger backup system for longer runtime and more demanding applications. This makes it a smart choice for families, RV owners, and anyone looking for more than a basic power solution. Instead of replacing your power station later, you can expand it as needed. That flexibility helps you stay ready for emergencies, extended trips, and daily power support with confidence and control.
Reliable Performance for Modern Power Needs
EcoFlow designed the DELTA Pro 3 to handle modern power demands with confidence and stability. It is well suited for charging phones, laptops, kitchen appliances, lights, and other essential electronics. Its large battery capacity helps reduce the stress of short outages and gives you more time to keep your home or workspace running. For outdoor users, it offers a dependable source of electricity without the noise and fuel concerns of a traditional generator. If you want a clean, powerful, and practical portable power station, this model offers a balanced mix of convenience, strength, and long-term value.
A Smart Backup Power Solution for Everyday Preparedness
The EcoFlow DELTA Pro 3 portable power station is more than just a battery backup. It is a complete power solution designed for people who want security, mobility, and performance in one product. Its strong capacity, expandable design, and versatile use cases make it ideal for both planned adventures and unexpected outages. The unit fits into a modern lifestyle where reliable power matters at home, on the road, and outdoors. For users searching for a dependable portable power station with impressive storage and room to expand, the DELTA Pro 3 is a practical and future-ready choice.