EcoFlow Delta Pro Ultra Portable Power Station

The EcoFlow Delta Pro Ultra Portable Power Station is engineered to meet the highest energy demands with unparalleled performance and reliability. With an impressive output range of 7.2kW to 21.6kW, scalable up to three inverters, it offers robust and adaptable power solutions for large homes, critical business operations, or off-grid adventures.

This powerhouse boasts up to 90kWh capacity when combined with three inverters and 15 batteries, ensuring continuous power supply during prolonged outages or high consumption periods. The Delta Pro Ultra also supports solar input from 5.6kW to 16.8kW, promoting sustainable energy use and efficient charging.

Designed with an Online UPS featuring a 0-millisecond transfer time, it guarantees uninterrupted power for sensitive electronics and critical systems. Its Lithium Iron Phosphate (LFP) battery ensures long-lasting, stable, and safe performance, making it a reliable choice for extended use.

Choose the EcoFlow Delta Pro Ultra for unmatched power, capacity, and reliability, ensuring you are always prepared for any power need.

FEATURES

 

EcoFlow DELTA Pro Ultra Inverter Specifications

 

Model

EFYJ751-PCS-US

Net Weight

31.7 kg (70 lb)

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

AC Output

Discharging: Pure sine, 7,200W total, 120V/240V~ 60Hz; Bypass: 100-120V~30A total, 50Hz/60Hz

USB Ports

USB-A (× 2): 5V⎓2.4A, 12W max per port, total 24W; USB-C (× 2): 5/9/12/15/20V⎓5A, 100W max per port, total 200W

DC Output

12.6V⎓30A, 378W max

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

100-120~30A; 200-240V~30A, 50/60Hz

High-PV

80-450V⎓15A max, 4,000W max

Low-PV

30-150V⎓15A max, 1,600W max

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°C to 86°F))

Altitude

≤3,000 m (9,842 ft.)

IP Rating

IP54

Noise Level

<30 dB

UPS	Backup UPS <20 ms; online UPS 0 ms

Communication

Bluetooth & Wi-Fi & 4G

 

EcoFlow DELTA Pro Ultra Battery Specifications

 

Model	EFYJ751-BP
Name	Rechargeable Li-ion battery pack
Net Weight	52.7 kg (116.4 lb)
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
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°C to 86°F))
Altitude	≤3,000 m (9,842 ft.)
IP Rating	IP54

EcoFlow DELTA Pro Ultra

The most powerful whole-home backup solution.

Month-long power security.

6-90kWh Capacity

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 strong (time may vary). Stackable and space-saving, it packs comfortably into a garage or utility closet.

One unit covers every appliance.

7.2kW-21.6kW, 120V & 240V Output

With a 7.2kW output, EcoFlow DELTA Pro Ultra effortlessly runs even energy-hungry household items, like a 3-ton central air conditioner*. For more power, pair 3 inverters with the EcoFlow Smart Home Panel 2 to unlock a 21.6kW AC output. Plus, with X-Fusion you'll get a constant 7200W output no matter what.*

Flexible Solar Systems

With its flexible plug-and-play design and unrivaled solar input, EcoFlow DELTA Pro Ultra empowers you to tailor your solution to fit your energy needs. EcoFlow DELTA Pro Ultra includes a PV locking feature, assuring safety and a solid energy connection.

Rooftop Solar Systems

EcoFlow DELTA Pro Ultra works seamlessly with existing rooftop solar panels, replacing sensitive solar inverters prone to failure. Working in tandem with EcoFlow Smart Home Panel 2, maximize the value of your solar power and cut a chunk of change off your energy bill.

Always in charge

With a Generator or EV pile

You're spoilt for choice with EcoFlow DELTA Pro Ultra's charging options. As well as all our usual methods, like solar and the grid, you can now power up using a gas generator or even your EV charging pile. With the industry's fastest charging speeds of 8800W, top up two batteries in only 2 hours.

You won't even notice the grid was down.

0-ms Downtime, 0 dB Silent Backup

Imagine a world where power outages go unnoticed. With EcoFlow DELTA Pro Ultra's online UPS, you'll get just that. With uninterrupted power flow, EcoFlow DELTA Pro Ultra safeguards your vulnerable electronic equipment round-the-clock. For extended outages, you don't want to hear your backup in the background, so for low draws under 2000W*, it's completely silent. With a whisper-quiet 0 dB, your nights remain undisturbed as it powers your devices.*For a maximum of 30 minutes.

Peace of mind with an advanced design.

EcoFlow X-Cooling

With its flexible plug-and-play design and unrivaled solar input, EcoFlow DELTA Pro Ultra empowers you to tailor your solution to fit your energy needs. EcoFlow DELTA Pro Ultra includes a PV locking feature, assuring safety and a solid energy connection.

Boost Performance with BMS

With its flexible plug-and-play design and unrivaled solar input, EcoFlow DELTA Pro Ultra empowers you to tailor your solution to fit your energy needs. EcoFlow DELTA Pro Ultra includes a PV locking feature, assuring safety and a solid energy connection.

Powers through the most challenging situations.

EcoFlow DELTA Pro Ultra tackles even the most grueling conditions. Whether it's extreme weather or freezing winters, this giant safeguards your power security, just like usual.

What’s in the box

 

ADDITIONAL DOCUMENTATION

EcoFlow Delta Pro Ultra Manual

Order Confirmation:

Upon completing your order, you will promptly receive an email confirming the order placement, indicating that we have received your order and pre-authorized your credit card for the purchase. Our next step is to contact our suppliers to confirm the item's availability and readiness for shipment. Should the item be on backorder or unavailable, we will notify you of the estimated lead time. If the provided lead time is unsatisfactory, we will cancel the pre-authorization and contact you via email or phone. If the item can be shipped within 5 business days, we will proceed with processing the charges and shipping your order.

Incorrect Shipping Information:

In the event of incorrect shipping information provided at checkout, we will make every effort to track down the item using our shipping partners. Please be aware that refunds and returns are not available in such cases. However, we will do our utmost to locate the item. If successful, re-shipping fees of up to 20% of the item's value may apply.

Order Shipment:

If your order is in stock and we have successfully processed your credit card charges, the items will be shipped within five business days from the order date. You will receive tracking information via email within 24 hours of your order leaving the distribution center. Should tracking information not be received within six days of your order, please contact us at +1 (307) 317-7213.

Lead time is usually 5-10 business days to receive an order after purchase.

We offer free shipping on all orders and applicable items and brands within the mainland of US. Typically, orders are processed immediately upon receipt, taking approximately 1-3 business days after order confirmation, payment, and pick-up time to fulfill.

The delivery time via freight carrier may vary between 4-7 business days, depending on your location.

Shipping Concerns:

To prevent delays, frustration, and additional costs, kindly inform us of any concerns regarding the delivery to your location. It's important to note that the following situations may incur additional costs:

• Charges imposed by the freight company if an 18-wheeler truck cannot access the delivery location
• Restrictions on truck height or bridge laws during transportation
• Deliveries to islands
• Road or access restrictions
• Delivery requiring the use of a ferry, train, plane, or additional courier transport

Contact Information:

You can reach us using the contact methods provided below:

• Phone: +1 (307) 317-7213
• Business Address: 1309 Coffeen Avenue, STE 1200, Sheridan, WY 82801
• Hours Of Operation: Mon-Sat: 9:00 AM - 8:00 PM EST
• Company Name: D&D ECO POWER GOODS LLC

Our return policy allows a 30-day window from the date of receiving your item to request a return.
For a return to be eligible, the item must be in its original packaging, unused, unworn, and include all tags. Additionally, you will need to provide the receipt or proof of purchase. Items not meeting these conditions will not be accepted for return.

To initiate a return, please contact us at +1 (307) 317-7213. If your return is approved, we will provide you with a return shipping label and detailed instructions on where and how to send the package. Returns without prior authorization will not be accepted.
Returns not related to damaged items will be subject to a restocking fee of 25%.

In case of a return, customers will be responsible for a return shipping.

Please note that items outside the 30-day return period will not be accepted.
If you have any questions about returns, feel free to contact us at +1 (307) 317-7213.

If you decide to cancel your order before shipment, a 3% deduction will be applied to cover platform fee expenses from the total paid amount.

Damages and Issues:

Upon receiving your order, promptly inspect it. If you discover any defects, damages, or receive the wrong item, contact us immediately to assess the issue and take appropriate action to rectify it.
For damaged items, inform us within 24 hours of receiving the package.

Exchanges:

To expedite the exchange process, return the item you have and make a separate purchase for the desired item. This ensures a speedy process and guarantees you get what you want without delay.

Refunds:

Once we receive and inspect your returned item, we will notify you regarding the approval or rejection of your refund. If approved, the refund will be processed automatically through your original payment method. Keep in mind that it may take some time for your bank or credit card company to process and post the refund.
For any further questions, don't hesitate to reach out to us at +1 (307) 317-7213.

If you decide to cancel your order before shipment, a 3% deduction will be applied to cover platform fee expenses from the total paid amount.

Additional info:

Contact information

• Phone: +1 (307) 317-7213
• Business Address: 1309 Coffeen Avenue STE 1200, Sheridan, WY 82801
• Hours of Operation: Mon-Sat: 9:00 AM - 8:00 PM EST
• Company Name: D&D Eco Power Goods LLC