EcoFlow DELTA Pro Ultra Battery | 6-90kWh Capacity | 7.2-21.6kW Output (EFDeltaProUltra-BP-US)

1. Features (About This Item)

• Expandable Energy Storage: Effortlessly boost your DELTA Pro Ultra’s capacity with an additional 6kWh LiFePO4 battery, scalable up to 90kWh for whole-home backup power solutions.

• Reliable Long-Term Backup: One unit provides up to two days of off-grid power, with multiple batteries enabling one-month energy independence.

• Compact, Stackable Design: Save space with a modular, stackable battery system perfect for home or business use.

• Quick Plug-and-Play Setup: Set up in under a minute with seamless integration—requires EcoFlow DELTA Pro Ultra Inverter.

• Secure Installation Support: For 3+ battery packs, request the EcoFlow Fixing Metal Tab to ensure safe, stable stacking.

2. Specifications (Technical Details)

General

• Model: EFYJ751-BP
• Name: Rechargeable Li-ion battery pack
• Net Weight: 50.7 kg (111.8 lb)
• Dimensions: 660 × 455 × 204 mm (26 × 18 × 8 in.)
• Capacity: 102.4V⎓60A, 6,144Wh

Battery

• 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

Other

• 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

3. What’s Included in the Box

4. Product Description (Product Details)

The EcoFlow DELTA Pro Ultra Battery is a high-capacity, expandable home energy solution designed for ultimate backup power. With a scalable capacity from 6kWh to 90kWh, it can deliver up to 30 days of essential home backup, perfect for extended outages.

Its modular, space-saving design fits neatly in garages or closets. Featuring 120V & 240V output with up to 21.6kW power when paired with multiple inverters, it easily powers high-demand appliances like central air conditioners. Built to perform in harsh environments, it ensures reliable off-grid power in extreme weather conditions.

5. Product Images & Videos (From the Brand)

✅ Includes:

6. Manufacturer Warranty Information

• 5-Year Warranty

Need Assistance? Contact Our Support Team:
📞 Phone: (800) 830-0173
📧 Email: support@igeobotics.com
🕐 Mon–Fri, 9:00 AM–6:00 PM (PST)

7. Additional Information

• Compliance and Certification: TRUSTe, NISTIR 8259, NISTIR 8425, PSTI, ISO 9001, FCC SDoC, SRRC, ISO 13849

• Unique Selling Points:

  • Price Match Guarantee

  • Free Shipping Nationwide

  • Expandable Storage Options

  • Grid-tied support with net metering (where applicable)

8. Use Documents

• EcoFlow DELTA Pro Ultra User Manual
• DELTA Pro Ultra-Quick Start Guide V1.0 

9. Frequently Asked Questions

Q: How long does it take to fully charge the EcoFlow DELTA Pro Ultra Battery?
A: With a maximum input of 6200W, a single battery can be fully charged in approximately 92 minutes. When charging two or more stacked batteries, the system supports up to 8800W, allowing a full charge in about 1 hour and 56 minutes.

Q: Can the EcoFlow DELTA Pro Ultra Battery be charged without the EcoFlow DELTA Pro Ultra Inverter?
A: No. The EcoFlow DELTA Pro Ultra Battery must be connected to the EcoFlow DELTA Pro Ultra Inverter to charge. It is not compatible with third-party inverters.

Q: Is the EcoFlow DELTA Pro Ultra compatible with third-party inverters?
A: No. For optimal performance and safety, the DELTA Pro Ultra system is only compatible with EcoFlow components.

Q: Can I schedule charging for the EcoFlow DELTA Pro Ultra during off-peak hours?
A: Yes, the system allows you to set custom charging times, making it ideal for avoiding peak utility rates.

Q: What Bluetooth versions does the EcoFlow DELTA Pro Ultra support?
A: The battery supports Bluetooth 4.2 and 5.0 for reliable and flexible connectivity.

Q: Can the EcoFlow DELTA Pro Ultra or Smart Home Panel 2 operate without the EcoFlow app?
A: The Smart Home Panel 2 requires the EcoFlow app to function. The DELTA Pro Ultra can operate independently, but app integration is highly recommended for full control and convenience.

10. Feedback

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Procoessing Times:

At iGeoBotics, we strive to process your order quickly and efficiently. Orders are typically processed within 0 to 1 business days. Please note that orders placed after 6:00 PM CST will be processed on the next business day.

Shipping Timeline and Costs:

• Delivery is expected within 3 to 6 business days on average.
• Free shipping is available for orders over $200.
• For orders under $200, a flat shipping fee of $15 applies.
• We currently ship exclusively within the United States and do not offer international shipping at this time.

Shipping Costs & Coverage:

Shipping Within the Continental U.S.
We provide shipping on all items to the 48 contiguous U.S. states. Whether you're located in Florida or California, we ensure prompt and efficient delivery on all orders

Where We Ship (and Where We Don’t):
At this time, we only deliver to addresses within the 48 contiguous United States.

This means we do not ship to: Alaska, Hawaii, U.S. territories or protectorates, International addresses (outside the U.S.)

Additionally, we are unable to ship to P.O. Boxes or military addresses, including APO, FPO, and DPO.

Third-Party Freight Carrier Deliveries:

Select orders may be delivered via trusted third-party freight carriers. Should your shipment require freight service, you'll be contacted to arrange a curbside delivery. To avoid delays, please ensure your phone number is accurate at checkout.

Order Accuracy & Pricing Corrections:

We do our best to keep all product and bundle pricing on our website accurate. However, in the event of a pricing mistake - whether due to technical issues or human error—we reserve the right to cancel the order and provide a full refund. This includes instances where an item or bundle is mistakenly listed at a much lower price than intended. If your order is impacted, our team will contact you as soon as possible.

Order Confirmation:

Once your order is placed, you will receive an email confirming that your order has been successfully received, along with payment approval. Your credit card will not be charged until your item is shipped, unless the item is back-ordered and requires reserving for you.

As soon as your order is confirmed, we immediately begin processing it to ensure timely delivery!

At iGeoBotics, we are committed to offering you the most competitive prices online. If you discover another store selling the same product at a lower price, let us know, and we’ll beat their price, no questions asked. Our goal is to ensure you feel confident that you’re getting the best possible deal on your order.

Our 100% Price Match Guarantee Includes the Following Conditions:

• Offers involving promotions such as rebates or "buy one, get one free" are not eligible.
• The competitor’s website must not be a discount or auction platform (e.g., eBay).
• The competitor must be an Authorized Retailer of the product in question.
• The price match will factor in the item cost, sales tax, and shipping charges.
• Price matching does not apply to exchanges or replacements.

Please Note: Certain exclusions may apply.

If you find a qualifying price, reach out to us at support@igeobotics.com, and we’ll take care of the rest!

Contact Information

Phone: 800-830-0173
Trade Name: iGeoBotics
Registered Business Name: North Point Sourcing LLC
Entity Number: 7695752
Email: support@igeobotics.com
Business Hours: Monday to Friday: 9:00 AM to 6:00 PM CST
Address: 19266 Coastal HWY Unit 4-521, Rehoboth Beach, Delaware 19971