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EcoFlow DELTA Pro Ultra X(1 inverter+2 batteries)

EcoFlow DELTA Pro Ultra X(1 inverter+2 batteries)

EcoFlow DELTA Pro Ultra X(1 inverter+2 batteries)

Description

Whole-Home Power. Unbound.

12–36kW Output

High Power. High IQ.

DELTA Pro Ultra X scales from 12 to 36kW. With a new Adaptive Start algorithm, it intelligently identifies connected appliances and tailors startup for each, seamlessly handling surges up to 45kW and high-demand appliances like a 5-ton AC.

Get Through Any Outage

12–180kWh Capacity—Power That Lasts

12–180kWh Capacity—Power That Lasts

Plug your generator into DELTA Pro Ultra X for seamless backup²

10kW Solar Surge³

Start with 12kWh. Scale instantly to 180kWh
with up to 30 plug-in expansion batteries—no tools, no hassle. Power grows with your needs.

Installed in 7 Days

The wide-body inverter and battery are a stand-alone, off-grid unit—no wall mounting required.Its flexible design allows for faster, simpler approval than grid-tied systems.The exclusive quick-connect makes plug-and-play with the Smart Home Panel 3 or Smart Gateway effortless.

The Fastest Installation:
7 Days, 3 Steps

DAY 1-2: Installer Match

Energy That Can Move With You

DIY Solar + Plug-and-Play Batteries

Smart & Reliable When It Matters Most

Auto-Recharging · 20ms Auto Switchover · 32 Circuits · Intelligent Control

Before the Storm: Get Alerts

Your 24/7 Money Saver

Here's a Typical Day of Savings

Day and night, the system intelligently shifts between solar, storage, and off-peak rates—maximizing every watt to get you the best deal. Here's what that might look like on a typical day of use.

Compatible with Existing Rooftop Solar

No Wasted Watts

With the EcoFlow Current Sense Transformer, every extra watt is redirected to your DELTA Pro Ultra X Smart Extra battery—never wasted or sold back to the grid for pennies.

The Highest Safety
Standards

The first EV-grade full-tab cells deliver higher capacity with lower resistance, less heat, and longer-lasting performance. 25% More Efficient power flow (thanks to lower resistance: 1.5 mΩ vs. 2 mΩ) 25% Less Self-Heating

EV-grade full-tab cells

What's in the box?

Product Specifications

EcoFlow DELTA Pro Ultra X(1 inverter+2 batteries)

Product Specifications


Product Manual

Product Warranty

EcoFlow Warranty Policy

Manufactures, suppliers, or publishers other than [email protected], may provide their own warranties to you. Please contact them for further information. 

Please note that the warranty period may vary according to local laws and regulations. Some countries, states, and provinces do not allow limitations on how long an implied warranty may last, so the limitation described above may not apply to you. You may have other rights from state to state, province, or country.

DO NOT USE YOUR PRODUCTS UNTIL YOU HAVE READ THE TERMS OF THE WARRANTY.

All EcoFlow products purchased on ecoflow.com come with a limited warranty, as shown below. BY USING ECOFLOW PRODUCTS, YOU AGREE TO BE BOUND BY THE TERMS OF THE ECOFLOW LIMITED WARRANTY.

We provide a limited warranty for purchases on ecoflow.com. The warranty period started when the original purchaser received the products.

Warranty Timeline

Item Warranty Period (refer to months, unless specified)
DELTA Max (1600/2000)
DELTA Max Smart Extra Battery
24+12 (Registration for warranty extension)
DELTA Pro
DELTA Pro Smart Extra Battery
24+36 (Registration for warranty extension)
RIVER mini
RIVER
RIVER Max
RIVER Max Plus
RIVER Pro
RIVER Extra Battery
RIVER Pro Extra Battery
DELTA mini
DELTA
Smart Generator (Dual Fuel)
24
400W Portable Solar Panel
220W Portable Solar Panel
160W Portable Solar Panel
110W Portable Solar Panel
85W Portable Solar Panel
60W Portable Solar Panel
45W Portable Solar Panel(Discontinued)
12
400W Rigid Solar Panel 10 years
100W Rigid Solar Panel
60
100W Flexible Solar Panel 36
Wave Portable Air Conditioner
Wave Add-On Battery
12
Accessories 12
Smart Generator 12
Power Hub
Power Kits Console
2kWh/5kWh LFP Battery
RIVER 2
RIVER 2 Max
RIVER 2 Pro
DELTA 2
DELTA 2 Max
DELTA 2 Extra Battery

5 years
R600/R600 Max/R600 Pro/EF-1500* 36
BLADE 36+12 (Registration for warranty extension)
GLACIER 12+12 (Registration for warranty extension)
WAVE 2 12+12 (Registration for warranty extension)
WAVE 2 Add-on Battery 24
DELTA Pro Ultra Battery 5 Years
DELTA Pro Ultra Inverter 5 Years
Smart Home Panel 2
10 Years
800W Alternator Charger 2 Years
DELTA Pro 3
5 Years
DELTA Pro 3 Extra Battery   5 Years
Smart Generator 4000 (Dual Fuel)  3 Years
Power Hat 1 Year
DELTA 3 Plus
DELTA 3 Extra Battery
5 Years
RIVER 3 2 Years
DELTA 3 1500
5 Years
RAPID 5000 2 Years
125W Bifacial Modular Solar Panel 5 Years
Smart Generator 3000 (Dual Fuel) 2 Years
RIVER 3 Plus 5 Years

For Kickstarter backers, please refer to the special warranty policy of the campaign or contact [email protected].

Warranty extension 

You can extend the warranty for products purchased between January 1, 2022, and August 31, 2022, by registering on the official website on or before October 15, 2022. 

Warranty cannot be extended for products purchased before January 1, 2022.

Customers who have purchased products on or after September 1, 2022 will enjoy the warranty period (with warranty extension) listed in the table above. Customers are advised to complete registration as early as possible.

Exclusions and Limitations

This warranty does not apply:

· Non-quality related issues;

· Items purchased from unauthorized resellers;

· Purchases without valid proof of purchase;

· Items that have been refunded;

· Items that have expired their warranty period;

· Any defects or damages caused by misuse of products, unauthorized modification, dis-assembly or operation not in accordance with the official instructions or manuals;

· Any defects or damages caused by exposure to excessive heat, liquids or other external causes;

· Any defects or damages caused by reliability or compatibility issues when using unauthorized third-party parts;

· Lost or stolen products;

· Free products.

Cross-Regional After-Sales Service

The products available for purchase on this website are manufactured in accordance with U.S. regulations and are intended solely for use within the United States and are designed to operate on a 120V power supply standard. Our after-sales service is only available in the contiguous U.S. and excludes Alaska, Hawaii, Puerto Rico, and Guam. We do not recommend, nor do we support, the purchase and shipment of these products to regions outside the United States. If the product is transported and used outside the U.S., any quality issues or malfunctions arising from such use will not be covered under this warranty. Furthermore, it is the user’s responsibility to verify that the product’s specifications, such as electric requirements, are compatible with the standards of the region in which it will be used. We shall not be held liable for any damages, losses, or other consequences resulting from such purchase or use. 

EcoFlow does not provide a global product warranty, and the warranty service can only be obtained at a designated EcoFlow repair center.

To repair the product in an EcoFlow repair center when the product was purchased in another region, depending on part availability, customers can obtain a cross-regional repair service at an additional charge. (Some products do not support cross-regional repair even if the customer is willing to pay for the service. For more details, please contact EcoFlow Support.)

A cross-regional replacement service is not available for different versions of the same product.

The customer will need to bear customs duties, taxes, customs clearance, and other costs incurred for a cross-regional repair, regardless of whether it is the warranty or paid repair service. 

Valid Proof of Purchase

  • A purchase order number made through ecoflow.com;
  • Sales invoice or order confirmation email that clearly shows the description of the product, its price, and sales channel.

Warranty Registration

  • Register your warranty at https://www.ecoflow.com/us/support/warranty 

Product FAQs

EcoFlow DELTA Pro Ultra X(1 inverter+2 batteries) Product FAQs

What are the specifications of the AC output ports of the DELTA Pro Ultra X?

The AC output ports and specifications of the DELTA Pro Ultra X are as follows:Front: NEMA 5 - 20 interface (120V 20A), L14 - 30 interface (120V/240V 30A), 14 - 50 interface (120V/240V 50A).Right side: 5 + 8 input/output interface (120V/240V 50A)

What are the specifications of the DC input ports of the DELTA Pro Ultra X? Are there any DC output ports?

The DC input ports and specifications of DELTA Pro Ultra X are as follows:High-PV input port: 80-500V//15A per interface, with a total maximum input of 10000W.There is no DC output port.

How many battery packs can the DELTA Pro Ultra X connect to at most?

The DELTA Pro Ultra X supports the parallel connection of up to 10 battery packs (with a single battery pack capacity of 6144kWh), which can significantly increase the backup power capacity.

What is the UPS switching time of the DELTA Pro Ultra X?

The UPS switching time of the DELTA Pro Ultra X is divided into two scenarios:When the DELTA Pro Ultra X operates independently: Power outage time < 10ms;When the DELTA Pro Ultra X operates in combination with the EcoFlow Smart Home Panel 3 (32 Circuits) or the Smart Gateway, the power outage switching time < 20ms.

What should be noted when connecting old batteries (DELTA Pro Ultra series) to the DELTA Pro Ultra X?

When connecting old batteries (with SN starting with Y712) to the DELTA Pro Ultra X, the following points must be followed:Only connect the old batteries to the rightmost Battery Port (the one farthest from the Power In/Out Port) for upgrading. Do not connect any batteries to the middle Battery Port to avoid abnormalities.Do not unplug the parallel connection cable during the upgrade process until the upgrade indicator on the screen disappears and the device restarts.

What are the core upgrades of the DELTA Pro Ultra X compared to the previous generation of DELTA Pro Ultra?

The total output power is increased from 7200W to 12000W;The maximum number of connectable battery packs is increased from 5 to 10;The maximum total PV input power is increased from 5600W to 10000W.

How about the solar charging capacity of the DELTA Pro Ultra X?

Supports two-way high-voltage PV inputs, with a voltage range of 80 - 500V for each way, a maximum working current of 15A per way, and a total power of up to 10,000W;The photovoltaic interface needs to be connected to the EcoFlow PV Switch Box (standard configuration).

Does the DELTA Pro Ultra X require a specific way to connect the battery packs to achieve an output power of 12KW?

Batteries need to be connected to both power-on pack ports on the Inverter. Additionally, it is recommended that the number of battery packs connected to the two ports be the same; if the number of battery packs connected to the two ports is inconsistent, the output power may not reach 12KW.

Can the DELTA Pro Ultra X output power in bypass mode when powered through the standard AC charging cable?

Yes, it's possible. The specification of the standard charging cable (EcoFlow AC Charging Cable (NEMA 5 - 15P to 5P8 Port)) is 15A, 120V. When charging with this cable, you can simultaneously output and carry a load from the front panel.

Can the DELTA Pro Ultra X change the power frequency to switch between 50Hz and 60Hz?

The frequency cannot be adjusted, and the default frequency is 60HZ. In bypass mode, the output frequency of the device is determined by the frequency of the input mains power (for example, if the mains power input is 60Hz, the output will be 60Hz; if the input is 50Hz, the output will be 50Hz).

Does the DELTA Pro Ultra X support charging by third-party generators?

Supported. There are two connection methods. You can directly connect to the Power in/out port via the accessory EcoFlow Generator Charging Adapter, or connect to the PV port through the EcoFlow FlowMaster Generator Rectifier [optional].

How to reset the Bluetooth connection of the DELTA Pro Ultra X?

When the device is turned off, press and hold the power button until the screen lights up, and then continue to hold it for about 5 seconds. When you hear the device beep twice in succession or see the device screen go off and then light up again, it indicates that the reset is successful.

Does the DELTA Pro Ultra X support grid connection?

It is not supported. The DELTA Pro Ultra X only draws power from the grid and will not actively transmit power back to the grid.

Which ecological products is the DELTA Pro Ultra X compatible with?

DELTA Pro Ultra X is compatible with the following products (some require additional accessories):Third-party devices: 3 - 7.2kW/12kW generators, charging piles, EV charging guns;EcoFlow products: EcoFlow Smart Home Panel 3 (32 Circuits) or Smart Gateway intelligent distribution box.

$7,999.00
EcoFlow DELTA Pro Ultra X(1 inverter+2 batteries)
$7,999.00

Product Information

Shipping & Returns

Description

EcoFlow DELTA Pro Ultra X(1 inverter+2 batteries)

Description

Whole-Home Power. Unbound.

12–36kW Output

High Power. High IQ.

DELTA Pro Ultra X scales from 12 to 36kW. With a new Adaptive Start algorithm, it intelligently identifies connected appliances and tailors startup for each, seamlessly handling surges up to 45kW and high-demand appliances like a 5-ton AC.

Get Through Any Outage

12–180kWh Capacity—Power That Lasts

12–180kWh Capacity—Power That Lasts

Plug your generator into DELTA Pro Ultra X for seamless backup²

10kW Solar Surge³

Start with 12kWh. Scale instantly to 180kWh
with up to 30 plug-in expansion batteries—no tools, no hassle. Power grows with your needs.

Installed in 7 Days

The wide-body inverter and battery are a stand-alone, off-grid unit—no wall mounting required.Its flexible design allows for faster, simpler approval than grid-tied systems.The exclusive quick-connect makes plug-and-play with the Smart Home Panel 3 or Smart Gateway effortless.

The Fastest Installation:
7 Days, 3 Steps

DAY 1-2: Installer Match

Energy That Can Move With You

DIY Solar + Plug-and-Play Batteries

Smart & Reliable When It Matters Most

Auto-Recharging · 20ms Auto Switchover · 32 Circuits · Intelligent Control

Before the Storm: Get Alerts

Your 24/7 Money Saver

Here's a Typical Day of Savings

Day and night, the system intelligently shifts between solar, storage, and off-peak rates—maximizing every watt to get you the best deal. Here's what that might look like on a typical day of use.

Compatible with Existing Rooftop Solar

No Wasted Watts

With the EcoFlow Current Sense Transformer, every extra watt is redirected to your DELTA Pro Ultra X Smart Extra battery—never wasted or sold back to the grid for pennies.

The Highest Safety
Standards

The first EV-grade full-tab cells deliver higher capacity with lower resistance, less heat, and longer-lasting performance. 25% More Efficient power flow (thanks to lower resistance: 1.5 mΩ vs. 2 mΩ) 25% Less Self-Heating

EV-grade full-tab cells

What's in the box?

Product Specifications

EcoFlow DELTA Pro Ultra X(1 inverter+2 batteries)

Product Specifications


Product Manual

Product Warranty

EcoFlow Warranty Policy

Manufactures, suppliers, or publishers other than [email protected], may provide their own warranties to you. Please contact them for further information. 

Please note that the warranty period may vary according to local laws and regulations. Some countries, states, and provinces do not allow limitations on how long an implied warranty may last, so the limitation described above may not apply to you. You may have other rights from state to state, province, or country.

DO NOT USE YOUR PRODUCTS UNTIL YOU HAVE READ THE TERMS OF THE WARRANTY.

All EcoFlow products purchased on ecoflow.com come with a limited warranty, as shown below. BY USING ECOFLOW PRODUCTS, YOU AGREE TO BE BOUND BY THE TERMS OF THE ECOFLOW LIMITED WARRANTY.

We provide a limited warranty for purchases on ecoflow.com. The warranty period started when the original purchaser received the products.

Warranty Timeline

Item Warranty Period (refer to months, unless specified)
DELTA Max (1600/2000)
DELTA Max Smart Extra Battery
24+12 (Registration for warranty extension)
DELTA Pro
DELTA Pro Smart Extra Battery
24+36 (Registration for warranty extension)
RIVER mini
RIVER
RIVER Max
RIVER Max Plus
RIVER Pro
RIVER Extra Battery
RIVER Pro Extra Battery
DELTA mini
DELTA
Smart Generator (Dual Fuel)
24
400W Portable Solar Panel
220W Portable Solar Panel
160W Portable Solar Panel
110W Portable Solar Panel
85W Portable Solar Panel
60W Portable Solar Panel
45W Portable Solar Panel(Discontinued)
12
400W Rigid Solar Panel 10 years
100W Rigid Solar Panel
60
100W Flexible Solar Panel 36
Wave Portable Air Conditioner
Wave Add-On Battery
12
Accessories 12
Smart Generator 12
Power Hub
Power Kits Console
2kWh/5kWh LFP Battery
RIVER 2
RIVER 2 Max
RIVER 2 Pro
DELTA 2
DELTA 2 Max
DELTA 2 Extra Battery

5 years
R600/R600 Max/R600 Pro/EF-1500* 36
BLADE 36+12 (Registration for warranty extension)
GLACIER 12+12 (Registration for warranty extension)
WAVE 2 12+12 (Registration for warranty extension)
WAVE 2 Add-on Battery 24
DELTA Pro Ultra Battery 5 Years
DELTA Pro Ultra Inverter 5 Years
Smart Home Panel 2
10 Years
800W Alternator Charger 2 Years
DELTA Pro 3
5 Years
DELTA Pro 3 Extra Battery   5 Years
Smart Generator 4000 (Dual Fuel)  3 Years
Power Hat 1 Year
DELTA 3 Plus
DELTA 3 Extra Battery
5 Years
RIVER 3 2 Years
DELTA 3 1500
5 Years
RAPID 5000 2 Years
125W Bifacial Modular Solar Panel 5 Years
Smart Generator 3000 (Dual Fuel) 2 Years
RIVER 3 Plus 5 Years

For Kickstarter backers, please refer to the special warranty policy of the campaign or contact [email protected].

Warranty extension 

You can extend the warranty for products purchased between January 1, 2022, and August 31, 2022, by registering on the official website on or before October 15, 2022. 

Warranty cannot be extended for products purchased before January 1, 2022.

Customers who have purchased products on or after September 1, 2022 will enjoy the warranty period (with warranty extension) listed in the table above. Customers are advised to complete registration as early as possible.

Exclusions and Limitations

This warranty does not apply:

· Non-quality related issues;

· Items purchased from unauthorized resellers;

· Purchases without valid proof of purchase;

· Items that have been refunded;

· Items that have expired their warranty period;

· Any defects or damages caused by misuse of products, unauthorized modification, dis-assembly or operation not in accordance with the official instructions or manuals;

· Any defects or damages caused by exposure to excessive heat, liquids or other external causes;

· Any defects or damages caused by reliability or compatibility issues when using unauthorized third-party parts;

· Lost or stolen products;

· Free products.

Cross-Regional After-Sales Service

The products available for purchase on this website are manufactured in accordance with U.S. regulations and are intended solely for use within the United States and are designed to operate on a 120V power supply standard. Our after-sales service is only available in the contiguous U.S. and excludes Alaska, Hawaii, Puerto Rico, and Guam. We do not recommend, nor do we support, the purchase and shipment of these products to regions outside the United States. If the product is transported and used outside the U.S., any quality issues or malfunctions arising from such use will not be covered under this warranty. Furthermore, it is the user’s responsibility to verify that the product’s specifications, such as electric requirements, are compatible with the standards of the region in which it will be used. We shall not be held liable for any damages, losses, or other consequences resulting from such purchase or use. 

EcoFlow does not provide a global product warranty, and the warranty service can only be obtained at a designated EcoFlow repair center.

To repair the product in an EcoFlow repair center when the product was purchased in another region, depending on part availability, customers can obtain a cross-regional repair service at an additional charge. (Some products do not support cross-regional repair even if the customer is willing to pay for the service. For more details, please contact EcoFlow Support.)

A cross-regional replacement service is not available for different versions of the same product.

The customer will need to bear customs duties, taxes, customs clearance, and other costs incurred for a cross-regional repair, regardless of whether it is the warranty or paid repair service. 

Valid Proof of Purchase

  • A purchase order number made through ecoflow.com;
  • Sales invoice or order confirmation email that clearly shows the description of the product, its price, and sales channel.

Warranty Registration

  • Register your warranty at https://www.ecoflow.com/us/support/warranty 

Product FAQs

EcoFlow DELTA Pro Ultra X(1 inverter+2 batteries) Product FAQs

What are the specifications of the AC output ports of the DELTA Pro Ultra X?

The AC output ports and specifications of the DELTA Pro Ultra X are as follows:Front: NEMA 5 - 20 interface (120V 20A), L14 - 30 interface (120V/240V 30A), 14 - 50 interface (120V/240V 50A).Right side: 5 + 8 input/output interface (120V/240V 50A)

What are the specifications of the DC input ports of the DELTA Pro Ultra X? Are there any DC output ports?

The DC input ports and specifications of DELTA Pro Ultra X are as follows:High-PV input port: 80-500V//15A per interface, with a total maximum input of 10000W.There is no DC output port.

How many battery packs can the DELTA Pro Ultra X connect to at most?

The DELTA Pro Ultra X supports the parallel connection of up to 10 battery packs (with a single battery pack capacity of 6144kWh), which can significantly increase the backup power capacity.

What is the UPS switching time of the DELTA Pro Ultra X?

The UPS switching time of the DELTA Pro Ultra X is divided into two scenarios:When the DELTA Pro Ultra X operates independently: Power outage time < 10ms;When the DELTA Pro Ultra X operates in combination with the EcoFlow Smart Home Panel 3 (32 Circuits) or the Smart Gateway, the power outage switching time < 20ms.

What should be noted when connecting old batteries (DELTA Pro Ultra series) to the DELTA Pro Ultra X?

When connecting old batteries (with SN starting with Y712) to the DELTA Pro Ultra X, the following points must be followed:Only connect the old batteries to the rightmost Battery Port (the one farthest from the Power In/Out Port) for upgrading. Do not connect any batteries to the middle Battery Port to avoid abnormalities.Do not unplug the parallel connection cable during the upgrade process until the upgrade indicator on the screen disappears and the device restarts.

What are the core upgrades of the DELTA Pro Ultra X compared to the previous generation of DELTA Pro Ultra?

The total output power is increased from 7200W to 12000W;The maximum number of connectable battery packs is increased from 5 to 10;The maximum total PV input power is increased from 5600W to 10000W.

How about the solar charging capacity of the DELTA Pro Ultra X?

Supports two-way high-voltage PV inputs, with a voltage range of 80 - 500V for each way, a maximum working current of 15A per way, and a total power of up to 10,000W;The photovoltaic interface needs to be connected to the EcoFlow PV Switch Box (standard configuration).

Does the DELTA Pro Ultra X require a specific way to connect the battery packs to achieve an output power of 12KW?

Batteries need to be connected to both power-on pack ports on the Inverter. Additionally, it is recommended that the number of battery packs connected to the two ports be the same; if the number of battery packs connected to the two ports is inconsistent, the output power may not reach 12KW.

Can the DELTA Pro Ultra X output power in bypass mode when powered through the standard AC charging cable?

Yes, it's possible. The specification of the standard charging cable (EcoFlow AC Charging Cable (NEMA 5 - 15P to 5P8 Port)) is 15A, 120V. When charging with this cable, you can simultaneously output and carry a load from the front panel.

Can the DELTA Pro Ultra X change the power frequency to switch between 50Hz and 60Hz?

The frequency cannot be adjusted, and the default frequency is 60HZ. In bypass mode, the output frequency of the device is determined by the frequency of the input mains power (for example, if the mains power input is 60Hz, the output will be 60Hz; if the input is 50Hz, the output will be 50Hz).

Does the DELTA Pro Ultra X support charging by third-party generators?

Supported. There are two connection methods. You can directly connect to the Power in/out port via the accessory EcoFlow Generator Charging Adapter, or connect to the PV port through the EcoFlow FlowMaster Generator Rectifier [optional].

How to reset the Bluetooth connection of the DELTA Pro Ultra X?

When the device is turned off, press and hold the power button until the screen lights up, and then continue to hold it for about 5 seconds. When you hear the device beep twice in succession or see the device screen go off and then light up again, it indicates that the reset is successful.

Does the DELTA Pro Ultra X support grid connection?

It is not supported. The DELTA Pro Ultra X only draws power from the grid and will not actively transmit power back to the grid.

Which ecological products is the DELTA Pro Ultra X compatible with?

DELTA Pro Ultra X is compatible with the following products (some require additional accessories):Third-party devices: 3 - 7.2kW/12kW generators, charging piles, EV charging guns;EcoFlow products: EcoFlow Smart Home Panel 3 (32 Circuits) or Smart Gateway intelligent distribution box.

EcoFlow DELTA Pro Ultra X(1 inverter+2 batteries) | OffGrid Living