EcoFlow DELTA Pro Ultra Battery Pack Expandable 6kWh to 90kWh Backup Power
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*Orders placed before 1 PM EST Mon - Thur will ship the same day. Orders placed beyond these hours will be shipped the next business day. Exclusions apply. See shipping policy
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Free Local Pickup
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The EcoFlow DELTA Pro Ultra is the most powerful whole-home backup solution designed to keep your essential appliances running smoothly during outages. Powered by the DELTA Pro Ultra Battery Pack, which starts at 6kWh, providing up to two days of backup, the system is fully expandable—stack up to 90kWh for over a month of continuous power. Its compact, stackable design fits neatly into garages or closets, while a quick plug-and-play setup gets you up and running in under a minute.
Delivering up to 7.2kW continuous power at 120V and 240V, the DELTA Pro Ultra can easily handle high-demand appliances like central air conditioners. Pair three inverters with the EcoFlow Smart Home Panel 2 to unlock up to 21.6kW output for complete whole-home coverage. Built to withstand extreme weather and harsh environments, it operates reliably from -4 degrees Fahrenheit to 113 degrees Fahrenheit and features IP54 dust and splash resistance.
Expandable Battery Capacity
The DELTA Pro Ultra Battery Pack starts at 6kWh, providing up to two days of backup power, and can be stacked up to 90kWh for over a month of continuous energy, scaling with your home’s needs.
Powerful Continuous Output
The DELTA Pro Ultra inverter delivers up to 7.2kW of continuous power at both 120V and 240V, capable of running heavy-duty household appliances such as central air conditioners.
Whole-Home Power Solution
By pairing three inverters with the EcoFlow Smart Home Panel 2, the system supports up to 21.6kW output for full-home coverage, handling multiple appliances simultaneously.
Compact and Stackable Design
Battery packs are designed to be space-efficient and stackable, allowing neat, mess-free installation in garages, utility closets, or other small spaces.
Quick Plug-and-Play Setup
The system is designed for simple installation—get your backup power running in under a minute without complicated wiring or setup.
Durable and Weather-Resistant
Built to endure tough conditions, the system operates reliably between minus four degrees Fahrenheit and one hundred thirteen degrees Fahrenheit, with an IP54 rating for dust and splash resistance.
High Voltage Tolerance
The DELTA Pro Ultra supports up to 290V high voltage input, ensuring stable performance even under demanding electrical conditions.
Secure Stacking Accessories
For setups with three or more battery packs, EcoFlow provides a Fixing Metal Tab accessory to securely stack and stabilize your battery system.
EcoFlow DELTA Pro Ultra Battery Pack – Expandable 6kWh to 90kWh Backup Power
Battery Capacity and Chemistry
| Rated Capacity | 6,144 Wh (6.1 kWh) per unit |
| Expandable | Stackable up to 90 kWh |
| Voltage | 102.4 V DC |
| Battery Chemistry | Lithium Iron Phosphate (LiFePO4) |
| Cycle Life | 3,500 plus cycles to 80 percent capacity |
Power Output
| Continuous AC Output | 7,200 W at 120 V and 240 V |
| Peak Output | Up to 21,600 W (with 3 inverters) |
| Solar Input | 5.6 kW to 16.8 kW (3 x 5.6 kW) |
| Transfer Time | 20 milliseconds auto-switching |
Solar and Charging Inputs
| High Voltage Input | 80 to 450 V DC, max 15 A |
| Low/Mid Voltage Input | 30 to 150 V DC, max 15 A |
| Charging Ports | USB-A, USB-C, 30 A AC, DC 12.6 V / 30 A |
Environmental and Durability
| Operating Temperature | minus 4 degrees Fahrenheit to 113 degrees Fahrenheit (minus 20 degrees Celsius to 45 degrees Celsius) |
| IP Rating | IP54 dustproof and splashproof |
| Maximum Operating Altitude | 9,842.5 feet (3,000 meters) |
Physical Dimensions and Weight
| Dimensions | 26 inches x 18 inches x 8 inches |
| Net Weight | 116.4 pounds (52.8 kilograms) |
Shipping & Returns
Frequently Asked Questions
How do I return an item?
How do I return an item?
Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.
Will I receive a full refund when I return an item?
Will I receive a full refund when I return an item?
You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges.
How many days do I have to make a return?
How many days do I have to make a return?
You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days.
My item was damaged in transit. How do I place a return?
My item was damaged in transit. How do I place a return?
If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact support@focuscamera.com with your order number and a description of the damage.
There’s an issue with my order, what should I do?
There’s an issue with my order, what should I do?
Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at support@focuscamera.com, or send us a message here.
Can I exchange an item?
Can I exchange an item?
We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead.
If I ordered a kit, do I have to return all the items?
If I ordered a kit, do I have to return all the items?
If you ordered a kit, you must return all components and accessories to receive a full refund.
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund.
Do you offer repairs?
Do you offer repairs?
We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900.
What is your return policy?
What is your return policy?
Most items can be returned within 30 days for a full refund. Click here to read our full return policy.
