EcoFlow Delta Pro Ultra Inverter + Battery Set
Orders processed and shipped out in 5-7 business days
Covered by the EcoFlow product warranty
100-day free returns
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EcoFlow Delta Pro Ultra Inverter + Battery Set - 1 Battery is backordered and will ship as soon as it is back in stock.
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Description
Description
Whole-Home Backup Power System with Scalable Battery Storage for Australian Homes
When the grid goes down, this system keeps the house running. The EcoFlow Delta Pro Ultra Inverter + Battery Set provides reliable backup for lights, fridges, heating, cooling, and other essentials without fuel, fumes or generator noise. Everyday routines can carry on with minimal disruption.
This system also makes better use of solar and off-peak energy. Excess solar can be stored and used later, while grid power can be drawn when rates are lower and used when prices rise. It’s a practical way to reduce reliance on the grid without changing daily habits.
Built to adapt as household energy needs change, the system starts with solid capacity and expands by adding batteries over time. It offers dependable backup now while allowing for more storage later, giving households long-term reliability without locking them into a fixed setup.

Features and Benefits
- Inverter included with every set for whole-home backup
- Scalable battery capacity from 6 to 30kWh
- 6900W AC output to power high-demand appliances
- Up to 5.6kW solar input for rooftop and portable systems
- Fast charging up to 8800W via solar, grid, generator or EV charger
- Less than 20 ms switchover for seamless backup power
- Silent operation at low loads
- Movable, stackable design for indoor or outdoor use
- Covered by EcoFlow warranty
Scalable Battery Capacity up to 30kWh
Starting at 6kWh and expanding up to 30kWh, the battery system is designed to cover short outages through to extended blackouts. This matters because households can size their setup to current needs and increase storage later without replacing the system.
High-Power 6900W Whole-Home Output
With a 6900W AC output at 230V, the system can run energy-hungry appliances like air conditioning, cooking equipment and power tools. This allows more of the home to stay operational instead of choosing only a few critical circuits.
Advanced Solar Input up to 5.6kW
The inverter supports up to 5.6kW of solar input using high and low PV technology. This enables efficient charging from rooftop or portable solar, reducing reliance on the grid and improving energy independence.
Flexible Charging Options
Charging is supported via solar, mains power, gas generators, and EV charging piles. With charging speeds up to 8800W, batteries can be quickly topped up, helping households recover power capacity within a short time window.
Seamless Backup with Online UPS
With a switchover time of less than 20 milliseconds, backup power engages fast enough to protect sensitive electronics. For low power draws under 2000W, the system operates silently, keeping backup power unobtrusive during outages.
Built for Tough Conditions
Rated for operation from -20°C to 45°C and protected with an IP54 dust and splash resistance rating, the system is built to handle harsh environments. This improves reliability during extreme weather and long-term home installation.
Automatic Transfer Switch Compatibility
When paired with an EcoFlow Automatic Transfer Switch, loads can shift automatically between grid and backup power. This ensures connected circuits continue to receive power without manual intervention during outages.
What's in the Box
- EcoFlow Delta Pro Ultra Inverter
- EcoFlow Portable Stand
- EcoFlow Disassembly and Assembly Tool
- EcoFlow Solar to Low-PV Port Charging Cable
- EcoFlow AC Charging Cable-C20
- Quick Start Guide
- Warranty Card
Specifications
Specifications
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Capacity
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Technical Specifications
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Weight
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Dimensions
Delivery
Delivery
All orders are shipped from Australia with fast shipping from trusted couriers & order tracking notifications sent via SMS and email.
Complementary shipping insurance included at no extra cost.
Orders processed and shipped out in 5-7 business days
Delivered via courier 3-10 days
Pickup unavailable for this product
Note: Shipping charges apply per shipment and may vary depending on the warehouse location or supplier.
View our shipping policy for full delivery details.
Our customer support team is here to help with any delivery concerns.
Finance Options
Finance Options
Your Details Are Safe
We ensure secure processing of your payment information and do not retain or have any access to your credit card details.
Lifetime Support
Eco Off Grid customers get free lifetime product support from our experts.
Need help? Call us anytime 1300 676 523
EcoFlow Delta Pro Ultra Inverter + Battery Set Reviews
Frequently Asked Questions
Can the EcoFlow Delta Pro Ultra power an entire home?
Can the EcoFlow Delta Pro Ultra power an entire home?
The system is designed for whole-home backup and can run most essential household appliances at the same time, including fridges, lighting, heating and air conditioning. The number of circuits and how long everything runs depends on the battery capacity chosen and the home’s power usage.
How long can the Delta Pro Ultra supply backup power during an outage?
How long can the Delta Pro Ultra supply backup power during an outage?
Backup duration depends on the number of batteries in the system and the power being used. With scalable capacity from 6kWh up to 30kWh, the system can cover short outages through to extended blackouts when loads are managed sensibly.
Can it be charged using solar panels?
Can it be charged using solar panels?
Yes, the Delta Pro Ultra supports both rooftop and portable solar setups with up to 5.6kW of solar input. This allows households to store solar energy during the day and use it at night or during power outages.
What is your returns policy?
What is your returns policy?
We know how crucial it is to find the perfect products for your access needs. To ensure you shop confidently, we proudly offer 100-day Free Returns on eligible products.
If you need to return your product, we'll organise and cover the return shipping costs across Australia without any restocking fees or hidden costs.
You'll have the option for a store credit, a full refund, or an exchange when the returned products meet the return criteria:
- The products cannot be used, damaged or modified and must be returned in the original packaging materials.
- Some products, such as almost new, made-to-order, installed, and custom-made products, aren't eligible for return.
- The 100-Day period begins from the day that your order is delivered or picked up.
- Only valid for the original purchaser.
- Only valid for online sales via ecooffgrid.com.au.
- Refunds, store credits or item swaps apply only to the cost of the products. Installation fees and original shipping costs will not be refunded.
Find our more by visiting our Refund Policy page.
How long will it take to receive my order?
How long will it take to receive my order?
We understand your eagerness to start your eco-friendly journey. That's why we endeavor to dispatch your order within 24 hours, business efficiency at its best. A confirmation email, complete with tracking details, will follow, allowing you to monitor your package's progress towards its new sustainable home.
What is the warranty on EcoFlow items?
What is the warranty on EcoFlow items?
Eco Off Grid only works with well-known, industry-leading manufacturers such as EcoFlow. All products come with a minimum 12-month warranty.
Minor scratches and blemishes may be visible upon receipt of your item. However, if the item is delivered damaged please contact us immediately.
How can I learn more?
How can I learn more?
Here are some hand selected articles we think you'll find useful:
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Or if you have further questions, check out our FAQ Page.























