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EcoFlow DELTA Pro Ultra - Whole-Home Backup System Solar Generators EcoFlow 1 x Inverter 1 x Battery - 6.144kWh No Smart Home Panel 2

EcoFlow DELTA Pro Ultra - Whole-Home Backup System

BY: EcoFlow | SKU: EFDPUPCS-BP Availability: In Stock
$6,098.00
$4,899.00
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EcoFlow DELTA Pro Ultra - Whole-Home Backup System

The EcoFlow DELTA Pro Ultra is a next-generation whole-home backup power solution, offering unmatched scalability, fast recharge capabilities, and powerful output to meet your home's energy demands. With a 7200W output and up to 21.6kWh capacity per unit (expandable to 90kWh), this modular system supports heavy loads such as HVACs, refrigerators, and home electronics with ease. Whether you're living off-grid, preparing for outages, or investing in energy independence, the DELTA Pro Ultra is a powerhouse built for the future.

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EcoFlow DELTA Pro Ultra – Whole-Home Backup System Features

7200W Output with 120V/240V Split-Phase

Delivers enough power for demanding appliances and whole-home operation, including electric ovens, AC units, and well pumps.

Expandable up to 90kWh Capacity

Start with one unit and scale up with additional batteries for longer runtimes and full-day home coverage.

Fast Charging Options: Solar, AC, EV, and Generator

Recharge via solar panels, wall outlets, EV stations, or gas generators—whichever suits your lifestyle and setup.

Seamless Home Integration

Pairs with EcoFlow Smart Home Panel 2 to automatically detect outages and instantly switch to backup power without interruption.

Quiet and Safe Operation

Runs silently indoors with advanced battery safety and thermal controls—no fumes, noise, or maintenance like gas generators.

App Monitoring and Control

Track real-time energy use, battery status, and charging settings through the EcoFlow app from anywhere.

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EcoFlow DELTA Pro Ultra – Whole-Home Backup System Applications

Whole-home emergency backup - Keeps your lights, fridge, internet, and HVAC running during blackouts.

Off-grid living - Supports long-term energy independence with solar recharging and high-capacity storage.

Solar energy storage - Stores daytime solar for night use, reducing electricity bills and grid reliance.

Mobile power for RVs or cabins - Provides powerful and silent backup for remote setups or traveling.

Smart home energy management - Integrates with EcoFlow Smart Home Panel for smart load prioritization and seamless switching.

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What's Included

Everything you need is included with your product.

DELTA Pro Ultra Inverter Box

  • 1 x DELTA Pro Ultra Inverter (70 lbs)
  • 1 x Portable Stand + 4 x Wheels
  • 1 x Assembly/Disassembly Tool
  • 1 x Solar Low-PV Charging Cable
  • 1 x AC Charging Cable C-20
  • 1 x Quick-Start Guide
  • 1 x Warranty Card

DELTA Pro Ultra Battery Box

  • 1 x DELTA Pro Ultra Battery (116 lbs)
  • 1 x Inverter/Battery Connection Cable
  • 1 x Safety Guide

Smart Home Panel 2

  • 1 x EcoFlow Smart Home Panel 2 (glass door and deadfront cover packaged separately)
  • 1 x Marking-off Template
  • 1 x EcoFlow Power Input/Output Cable*

*Two Power Input/Output Cables are included with two inverter purchases, and three Power Input/Output Cables are included with three inverter purchases.

EcoFlow DELTA Pro Ultra - Whole-Home Backup System Specifications

EcoFlow DELTA Pro Ultra Specifications

Category Specifications
Model EFYJ751-PCS-US
Net Weight 31.7 kg | 69.9 lbs
Dimensions 690 × 481 × 214 mm | 27.2 × 18.9 × 8.4 in
Wi-Fi Frequency range: 2,412-2,462MHz | 2,422-2,452MHz
Maximum output power: 0.3597W
Bluetooth Frequency range: 2,402-2,480MHz
Maximum output power: 0.0109W
4G Modem Port Supported with the EcoFlow 4G Dongle
Screen Supported
Grid-Tied Unsupported
Maximum Operating Altitude 3000m | 9842.5ft
IP Protection Rating IP54
Noise Level <30 dB
Uninterrupted Power Supply (UPS) Backup UPS <20 ms; online UPS 0 ms
Operating Temperature Discharging temperature: −20°C to 45°C (−4°F to 113°F)
Charging temperature: −20°C to 45°C (−4°F to 113°F)
Storage temperature: −20°C to 45°C (−4°F to 113°F)
Optimum temperature: −20°C to 45°C(68°C to 86°F))

DELTA Pro Ultra Inverter Output Specifications

Category Specifications
AC Output Discharging: Pure sine, 7200W Max, 120V/240V~ 60Hz
Bypass: 100-120V~30A total, 50Hz/60Hz, 3600W Max
AC Output Ports (20A) 4 x AC Output Sockets: 120V, 20A Max Per Port
AC Output Ports (30A) 1 x AC Output Socket: 120V, 30A Max
1 x NEMA L14-30 120/240V Split Phase Port
USB Ports 2 x USB-A: 5V⎓2.4A, 12W max per port, total 24W
2 x USB-C: 5/9/12/15/20V⎓5A100W max per port, total 200W
DC Output 1 x DC Port: 12.6V⎓30A, 378W Max
Anderson DC Port 1 x Anderson DC Output Port: 12.6V, 30A, 378W Max
Input/Output Port (Infinity Port) 1 x Power Input/Output Port: 100-120V, 30A;
Serves as both an AC input (for charging) and output (for connecting to the Smart Home Panel 2 or EV Charger)

DELTA Pro Ultra Inverter Input Specifications

Category Specifications
AC Input Charging: 100-120V~15A; 200-240V~12.5A, 50/60Hz
Bypass: 100-120V~15A, 50/60Hz (duration < 3hrs when the current exceeds 12A)
Power Input/Output (Infinity Port) 100-120~30A; 200-240V~30A, 50/60Hz
High Photovoltaic (PV) Input 80-450V⎓15A max, 4,000W max
Low Photovoltaic (PV) Input 30-150V⎓15A max, 1,600W max
Standby Power Consumption <12W

DELTA Pro Ultra Battery Specifications

Category Specifications
Model EFYJ751-BP
Net Weight 52.7 kg | 116.4 lbs
Dimensions 660 × 455 × 204 mm | 26 × 18 × 8 in
Capacity 102.4V⎓60A, 6,144Wh
Cell Material LFP
Cycle Life The battery maintains 80%+ SOH (state of health) after 3,500 cycles at 0.5C/0.5C at 25°C (77°F)
Protection Type Overvoltage protection, overload protection, overtemperature protection, short circuit protection, low temperature protection, low voltage protection, overcurrent protection
Operating Temperature Discharging temp: −20°C to 45°C (−4°F to 113°F) 
Charging temp: −20°C to 45°C (−4°F to 113°F) 
Storage temp: −20°C to 45°C (−4°F to 113°F) (optimum: −20°C to 45°C(68°F to 86°F))
Maximum Operating Altitude 3000m | 9842.5ft
IP Protection Rating IP54

DELTA Pro Ultra & Smart Home Panel 2 Instructional Videos

Frequently-Asked Questions

How much power can the DELTA Pro Ultra provide?

The base system delivers 6kW of output, but it can expand up to 21.6kW by adding more units in parallel.

Can this system run my entire home?

Yes, when configured with multiple inverters and batteries, the DELTA Pro Ultra can power home circuits, HVAC systems, and high-energy appliances.

How long does the battery last?

The LiFePO4 battery is rated for 3,500+ charge cycles, which means over 10 years of daily use.

Can I charge it with solar panels?

Yes! The DELTA Pro Ultra supports up to 16.8kW of solar input, making it perfect for off-grid setups.

Is the installation complicated?

The system is designed for easy integration with home electrical panels. A licensed electrician is recommended for whole-home installations.

Customer Reviews

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H
Harry Celec
The Best

What a great company to deal with. They helped me with ‘ all ‘ of my orders even to the smallest detail.Manny , with the tech part came through with answers before I could even think of them. ‘ The Best ‘ .