EcoFlow DELTA Pro Ultra Portable Power Station and Whole-Home Backup | 6144Wh | 7200W | 5.6kW Solar Input

EcoFlow DELTA Pro Ultra Is The Ultimate Solution For Home And Off-Grid Power Security

”Like a Tesla Powerwall on Wheels.” - CNET

Introducing EcoFlow DELTA Pro Ultra, the world's first expandable ecosystem for whole-home backup power and off-grid living. This revolutionary product goes beyond just being a portable power station; it's a complete energy management system that can power your entire home during outages and provide clean, renewable energy for everyday use.

What Can DELTA Pro Ultra Do For You?

(Literally) Run Your Entire Home

One 7200W DELTA Pro Ultra unit can run your entire home, including a central air conditioner (Locked Rotated Amps [LRA] up to 120A).

Power Your Home Up To A Month

The DELTA Pro Ultra unit has a scalable capacity up to 30kWh with one inverter stack and a massive 90kWh with three inverter stacks - which has the potential to power your home for up to a month.

Provide a Full Day of Power With One Hour of Solar Charge (1 Hour of Solar = 1 Day of Use)

DELTA Pro Ultra supports a plug-and-play home solar system of 5.6kWh - 16.8kWh (per inverter with 5.6kWh input) of solar input.

Power All of Your Appliances, Including Your Washing Machine + A/C Unit

With its continuous 7200W output, the DELTA Pro Ultra is powerful enough to run even demanding household appliances, like a 3-ton central air conditioner or a washing machine.

Provide Reliable Backup Power For 10-20 Years (really!)

DELTA Pro Ultra can charge and discharge up to 3,500 times and still retain 80% of its battery capacity. That means you can run it every day for nearly 10 years an still retain most of its battery power.

Experience Never-Ending 7.2kWh Output with EcoFlow's X-Stream Technology - Even While Charging in Bypass Mode!

EcoFlow's proprietary X-Fusion advanced technology ensures all AC output sockets provide optimal output when the product is in bypass mode (when you recharge and discharge the device simultaneously, the device enables bypass mode automatically), in terms of wattage and amp. In the fast charging mode, the output will always be 7.2kW no matter how much the input is. This means you receive optimal power output regardless of the device's operating mode.

You Can Charge DELTA Pro Ultra 8 Different Ways

1. Smart Home Panel 2
2. AC Charging (wall outlet)
3. EV Charging Pile
4. EcoFlow Dual Fuel Smart Generator
5. Gasoline Generator
6. High-PV Solar 
7. Low-PV Solar
8. Multiple Simultaneous Charging Methods

EcoFlow DELTA Pro Ultra + Smart Home Panel 2: The World's First Smart Hybrid Whole Home Backup

With DELTA Pro Ultra and the EcoFlow Smart Home Panel 2, when the grid goes down, your power stays on. Your system can control every appliance to give you the best Power Independence plan during outages. And with its stackable design, you can easily expand DELTA Pro Ultra storage in minutes, making it a perfect fit for garages or closets.

How It Works

The Smart Home Panel 2 is the center of the whole-home backup system. It is complete with internal auto-switchover for instant backup. The panel is divided into the distribution panel and the battery connection box. Internal switches inside the distribution panel, technically known as "relays," allow you to remotely control your backup system.

1. Connect Smart Home Panel 2 to Your Home Power Panel

The Smart Home Panel 2 is used as a sub panel to connect with the main panel to access grid power. It can also be connected to a generator, with an inlet box that allows you to easily connect your generator to the panel and to DELTA Pro Ultra for energy storage. At the same time, you can connect solar panels to the power station. The Smart Home Panel 2 can intelligently manage all these power sources, grid, batteries, solar panels, and gas.

2. Connect Up to 3 Delta Pro Ultra Inverters to Smart Home Panel 2

The EcoFlow Smart Home Panel 2 connects up to 3 sets of DELTA Pro Ultra inverters (and each inverter supports up to 5 battery packs). The panel serves as an auxiliary distribution point for electricity from your home's main panel and provides extra breakers for your backup loads.

3. Connect With The EcoFlow App To Easily Monitor & Control Your Power Usage

The DELTA Pro Ultra can be used to create a whole home backup system that stores power for your appliances. You can monitor daily, monthly, and annual data as well as manage your settings using the EcoFlow app. You will enjoy an outage-free life after installing this whole home backup system, which is specifically suitable for emergency backup during power outages, peak power demand, and more.

Enjoy Month-Long Power Security & Automatic Switch-Over During Power Outages

Enjoy an uninterrupted power backup experience with automatic switch-over, energy consumption monitoring, and lower electricity bills. Take home power dependability to another level with up to 90kWh battery capacity. For a standard household, that's over 30 days of essential backup power to keep appliances like lights and refrigerators running.

EcoFlow strongly recommends the EcoFlow Smart Home Panel 2 is installed by a professional EcoFlow-certified electrician.

EcoFlow DELTA Pro Ultra Warranty

The EcoFlow DELTA Pro Ultra has a 5-year warranty, with its LFP batteries lasting for as long as 10 years with up to 3,500 cycles.

What's Included

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 to 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 (optional)

• 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.

Frequently-Asked Questions

Is the EcoFlow Dual Fuel Smart Generator 4000 compatible with DELTA Pro Ultra?

No, as of December 2024, it is not compatible with the Dual Fuel Smart Generator 4000. There is rumor that EcoFlow may provide an adapter to allow this connection to work, but as of now, it does not.

I am building an off-grid solution with DELTA Pro Ultra and Smart Home Panel 2. I need to update the Smart Home Panel 2 firmware but I am receiving an error. How do I correct this?

A grid connection is necessary for the Smart Home Panel 2 to remain operational during the firmware upgrade process due to the temporary disconnection of the battery.

You can try simulating a grid power scenario using the DELTA Pro Ultra. Here’s how can to do it:

1. Prepare a DIY cable for the AC output socket (120V/240V, 30A) as it comes with 2 live wires. Strip the insulation from the cable and connect the two live wires from the cable to the main breaker in Smart Home Panel 2 (the other side needs plugged into this socket).
2. Unplug the DELTA Pro Ultra from Smart Home Panel 2, then turn on the Delta Pro Ultra and activate its AC output.
3. The Smart Home Panel 2 will recognize the AC output as grid power.
4. Start the firmware upgrade for Smart Home Panel 2.
5. After the firmware update is complete, turn off the AC output on the DELTA Pro Ultra and reconnect it to Smart Home Panel 2.

For safety reasons, please ensure that a qualified professional carries out this process.

Can I charge DELTA Pro Ultra with a portable generator while it also charges my home?

This is possible only if the generator has a total harmonic distortion (THD) of 8% or less and it has a pure sine inverter. Otherwise, it might be possible, but damage may occur to the DELTA Pro Ultra batteries.

Can an electrical appliance plug directly into EcoFlow DELTA Pro Ultra?

Yes. EcoFlow DELTA Pro Ultra (Inverter + Battery) works as a standalone unit powering electrical appliances of up to 7200W. There are 11 outlets on the inverter, including NEMA 5-20, TT30, L14-30 supporting 30A, USB-C, and USB-A.

How many ways can EcoFlow DELTA Pro Ultra connect to a home?

There are 3 ways EcoFlow DELTA Pro Ultra can connect to a home:

1. Inlet box
2. Transfer switch
3. EcoFlow Smart Home Panel 2

Can EcoFlow DELTA Pro Ultra be charged using an EcoFlow Smart Generator?

The EcoFlow Dual Fuel Smart Generator can charge the EcoFlow DELTA Pro Ultra using an EcoFlow AC Charging Cable (NEMA 5-15P to C19).

EcoFlow DELTA Pro Ultra can not be charged using DC through an XT150 cable.

Third-party generators can charge EcoFlow DELTA Pro Ultra using the EcoFlow AC Generator Charging Adapter.

The EcoFlow Smart Generator can be switched on or off through the EcoFlow app.

Can the EcoFlow DELTA Pro Ultra charge using existing rooftop solar?

Yes, it’s compatible with existing solar systems, including rooftop solar.* For each EcoFlow DELTA Pro Ultra Inverter, solar input can reach a maximum of 5600W (16.8kW with 3 inverters) with the following:

High voltage PV: 80-450V, 15A, 4000W Max
Low voltage PV: 30-150V, 15A, 1600W Max

*If you connect the EcoFlow DELTA Pro Ultra to PV system circuits installed on or in buildings, according to NEC regulations, the system shall include a rapid shutdown function to ensure operation safety and reduce shock hazards for emergency responders. If you wish to connect the EcoFlow DELTA Pro Ultra to PV system circuits, a pre-purchase consultation must be completed by a qualified electrician or installer.

Can EcoFlow DELTA Pro Ultra/EcoFlow Smart Home Panel 2 run without the EcoFlow app?

EcoFlow Smart Home Panel 2 requires the EcoFlow app to run. EcoFlow DELTA Pro Ultra works without the EcoFlow app, but it is recommended for convenience.

Can the EcoFlow DELTA Pro Ultra connect to the original EcoFlow Smart Home Panel?

No. You can purchase an EcoFlow Smart Home Panel 2 and an EcoFlow Double Voltage Hub - Power Input/Output (DELTA Pro) (connects 2 × EcoFlow DELTA Pro to EcoFlow Smart Home Panel 2) to replace the original EcoFlow Smart Home Panel and connect 2 × EcoFlow DELTA Pro Ultra and 2 × EcoFlow DELTA Pro at the same time to achieve a 21.6kW output.

Will the Smart Home Panel 2 work with a DELTA Pro?

If you connect one DELTA Pro, it will only get charged through the Smart Home Panel 2 - it will not discharge.

However, if you connect 2 DELTA Pro power stations with the Double Voltage Hub, they can charge and discharge with a maximum output of 7200W.

How many EcoFlow DELTA Pro/EcoFlow DELTA Pro Ultra units are supported by EcoFlow Smart Home Panel 2?

EcoFlow Smart Home Panel 2 can connect to EcoFlow DELTA Pro and EcoFlow DELTA Pro Ultra. Up to 3 EcoFlow DELTA Pro Ultra Inverters can connect to EcoFlow Smart Home Panel 2, with each inverter allowing for 5 batteries. A total of 2 EcoFlow DELTA Pro units can connect to the EcoFlow Smart Home Panel 2 using the EcoFlow Double Voltage Hub - Power Input/Output (DELTA Pro).

Does EcoFlow DELTA Pro Ultra work with an existing grid-tied system that does not have a backup feature?

Unfortunately, EcoFlow DELTA Pro Ultra cannot connect and feed back to the grid.

Does a single EcoFlow DELTA Pro Ultra have a 240V output?

Yes, it does. Even if EcoFlow DELTA Pro Ultra is connected to 120V, it can output 240V.

Can an EcoFlow DELTA Pro Ultra Battery charge without the EcoFlow DELTA Pro Ultra Inverter?

No. The EcoFlow DELTA Pro Ultra Battery needs to be connected to an EcoFlow DELTA Pro Ultra Inverter to charge. EcoFlow DELTA Pro Ultra is not compatible with third-party inverters.

How long is the EcoFlow DELTA Pro Ultra warranty?

EcoFlow Smart Home Panel 2 has a 10-year of quality assurance warranty. EcoFlow DELTA Pro Ultra has a 5-year warranty, with its LFP batteries lasting for as long as 10 years with up to 3500 cycles.

How long does it take to install EcoFlow Smart Home Panel 2?

EcoFlow Smart Home Panel 2's installation time may vary depending on the scope of work required and the current configuration of the circuits in your home. For most homes, EcoFlow Smart Home Panel 2 installs in 3-8 hours, which is similar to replacing a standard distribution box.

Can I install the EcoFlow Smart Home Panel 2 by myself?

EcoFlow Smart Home Panel 2 must be installed by certified installers and electricians who have completed EcoFlow Smart Home Panel 2 product training.

Will installing EcoFlow Smart Home Panel 2 and EcoFlow DELTA Pro Ultra affect NEM 2.0?

No. Since EcoFlow DELTA Pro Ultra it won't affect NEM 2.0. It cannot be connected to NEM 2.0 rooftop photovoltaic systems, so a new system would need to be installed.

What type of cables do I need to connect my solar panels to DELTA Pro Ultra?

DELTA Pro Ultra has two solar input ports: a Low-PV input port and a High-PV input port.

The Low-PV input port requires an MC4 to XT90 cable which is included with your DELTA Pro Ultra purchase. The High-PV input port requires an MC4 to MC4 cable which is not included.

Which port on the DELTA Pro Ultra does a generator plug into?

A generator can be plugged into the Power Input/Output port.

Can DELTA Pro Ulta be charged with multiple power sources? Can it be charged by solar and AC at the same time?

Yes, DELTA Pro Ultra has a feature called Multi-Charging that allows for power input to the inverter of 1.6kW of solar through the Low-PV Input Port and 7.2kW of AC through the AC input and the High-PV Input Port.

Can EcoFlow DELTA Pro Ultra connect to the electrical grid?

No, EcoFlow DELTA Pro Ultra is a solar-powered home backup system that functions independently of the grid. It can’t sell electricity back to the utility company, but it can be charged with solar panels for off-grid use.

Does EcoFlow DELTA Pro Ultra qualify for solar tax credits?

Yes, if you live in the US, you may be eligible for a 30% tax credit on the cost of EcoFlow DELTA Pro Ultra and solar panels.

Is EcoFlow DELTA Pro Ultra a better alternative to a standby generator?

EcoFlow DELTA Pro Ultra is a clean and quiet alternative to a gasoline or propane generator. It produces no emissions and can be used indoors or outdoors. It can be recharged with solar panels or the electrical grid.

How many appliances can I run with EcoFlow DELTA Pro Ultra?

The number of appliances you can power depends on the wattage of the appliances and the capacity of your EcoFlow DELTA Pro Ultra system. You can expand the system with additional batteries and inverters to run more appliances or high-wattage devices like air conditioners.

How long will EcoFlow DELTA Pro Ultra power my house?

The runtime depends on your home's energy consumption and the capacity of your EcoFlow DELTA Pro Ultra system. You can extend the runtime by adding more batteries or using solar panels to generate electricity for continuous charging.

DELTA Pro Ultra & Smart Home Panel 2 Instructional Videos

EcoFlow DELTA Pro Ultra Specifications

DELTA Pro Ultra Inverter General 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
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⎓5A, 100W 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
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
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

EcoFlow DELTA Pro Ultra Manual & Downloads

EcoFlow DELTA Pro Ultra Manual

EcoFlow DELTA Pro Ultra Brochure

EcoFlow DELTA Pro Ultra Quick-Start Guide

How Many EcoFlow Solar Panels Can I Connect To DELTA Pro Ultra?

DELTA Pro Ultra LCD Icon List