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Description
xEcoFlow DELTA Pro 3 Smart Extra Battery
4096Wh Capacity | LiFePO₄ Battery | Plug-and-Play Expansion | Up to 12kWh Total Capacity | 4000 Cycles to 80% Capacity | 5-Year Warranty
The EcoFlow DELTA Pro 3 Smart Extra Battery provides 4096Wh of additional energy storage for the EcoFlow DELTA Pro 3 Portable Power Station, giving you substantially longer runtime for home backup, emergencies, RV travel, camping, outdoor activities, and off-grid applications. Built with LiFePO₄ (LFP) battery technology, it is designed for long-term durability and reliable energy storage. Its plug-and-play design makes expansion simple, while the DELTA Pro 3 supports up to two Smart Extra Batteries, allowing total capacity to reach 12kWh.
Add 4096Wh of Extra Energy Storage
The Smart Extra Battery adds a full 4096Wh of capacity to your compatible DELTA Pro 3 system. By increasing the amount of stored energy available, it helps extend the operating time of connected appliances and electronics before the system needs to be recharged.
This additional capacity is especially useful during extended power outages, RV trips, camping adventures, remote work, and off-grid applications where access to conventional electricity may be limited.
Expand Your DELTA Pro 3 Up to 12kWh
The DELTA Pro 3 supports connection of up to two Smart Extra Batteries. Starting with the DELTA Pro 3's 4096Wh internal battery, adding two 4096Wh expansion batteries can provide approximately 12kWh of total energy storage.
This scalable design allows you to increase your backup capacity as your energy requirements grow without replacing your main power station.
Plug-and-Play Expansion
Adding the Smart Extra Battery is straightforward. Connect the battery to the Extra Battery port on the DELTA Pro 3 using the included EcoFlow Extra Battery Cable. Once connected correctly, the DELTA Pro 3 automatically recognizes the additional battery.
The plug-and-play design eliminates complicated installation and makes it easy to expand your energy-storage system.
Long-Lasting LiFePO₄ Battery
The Smart Extra Battery uses LiFePO₄ (LFP) battery chemistry, providing excellent thermal stability and durability for repeated charging and discharging.
EcoFlow rates the battery to maintain 80% or more of its State of Health after 4000 cycles under specified testing conditions, making it suitable for long-term energy-storage applications.
Automotive-Grade LFP Cell Technology
EcoFlow describes the battery as being built with automotive-grade LFP cells, providing a robust battery platform for demanding home backup and portable-energy applications. The technology is designed to deliver dependable performance while supporting long-term battery life.
More Runtime During Power Outages
Additional battery capacity means more time between charging sessions. When connected to the DELTA Pro 3, the extra 4096Wh can help keep essential equipment operating for longer during a grid outage.
Use the expanded system to support compatible refrigerators, freezers, lighting, Wi-Fi equipment, computers, televisions, kitchen appliances, and other essential electronics.
Ideal for RV and Off-Grid Adventures
The Smart Extra Battery is also an excellent addition for RVs, campers, outdoor workspaces, remote locations, and extended camping trips.
By adding more stored energy, you can spend more time away from traditional power outlets while reducing the frequency with which you need to recharge the system.
Charge Through the DELTA Pro 3
The Smart Extra Battery can be charged through the connected DELTA Pro 3 Portable Power Station. Connect the battery using the supplied cable, then connect the DELTA Pro 3 to an appropriate power source. The connected system manages charging and energy distribution between the batteries.
Smart Generator Charging Support
The Smart Extra Battery can also be connected to a compatible EcoFlow Smart Generator using the appropriate adapter, allowing the battery to be charged even when it is not connected to a DELTA Pro 3 power station.
This provides an additional charging option for emergency and off-grid scenarios.
Stackable Design for Home Backup
The Smart Extra Battery features a stackable design intended for convenient indoor and home backup installations. This helps create a more organized energy-storage setup when multiple batteries are used.
Important: EcoFlow's manual advises against stacking batteries directly on the DELTA Pro 3. Follow EcoFlow's installation and placement instructions when configuring multiple units.
Advanced Battery Protection
The battery incorporates multiple protection systems designed to help safeguard the cells during charging, discharging, and everyday operation.
Protection features include:
- Over-voltage protection
- Overload protection
- Over-temperature protection
- Short-circuit protection
- Low-temperature protection
- Low-voltage protection
- Overcurrent protection
LED Battery Status Display
An integrated LED array provides a convenient visual indication of the battery's status and remaining charge level. The LEDs illuminate according to the current battery level, while flashing indicators can signal charging or an error condition.
Designed for Long-Term Energy Storage
The combination of 4096Wh capacity, LFP chemistry, intelligent battery management, and multiple protection systems makes the DELTA Pro 3 Smart Extra Battery a practical long-term expansion solution.
Rather than purchasing another complete power station, you can add additional battery capacity to your existing DELTA Pro 3 system and extend its runtime.
Power That Grows With Your Needs
The DELTA Pro 3 platform is designed to scale with changing energy requirements. Start with the standard 4096Wh DELTA Pro 3 and add one or two Smart Extra Batteries when you need more stored energy.
With two compatible expansion batteries, the system can reach approximately 12kWh of total capacity, providing significantly more runtime for extended backup applications.
A Smart Upgrade for Your DELTA Pro 3
If your DELTA Pro 3 already provides the output power you need but you want longer runtime, the EcoFlow DELTA Pro 3 Smart Extra Battery is a straightforward upgrade.
Its 4096Wh capacity, LiFePO₄ chemistry, plug-and-play installation, 4000-cycle rating, and expandable architecture make it an ideal addition for home backup, RVing, camping, emergency preparedness, and off-grid energy systems.
What's Included
- 1 × EcoFlow DELTA Pro 3 Smart Extra Battery
- 1 × EcoFlow Extra Battery Cable
- 1 × Quick Start Guide
- 1 × Safety Guide
- 1 × Warranty Card
EcoFlow's product documentation confirms the Smart Extra Battery, Extra Battery Cable, and product documentation as the package contents.
Technical Specifications
- Capacity: 4096Wh
- Nominal Voltage: 51.2V
- Rated Capacity: 80Ah
- Battery Chemistry: LiFePO₄ (LFP)
- Cycle Life: 4000 cycles to 80%+ State of Health
- Input: 40–58.4V, 80A maximum
- Output: 40–58.4V, 100A maximum
- Compatible Power Station: EcoFlow DELTA Pro 3
- Maximum Extra Batteries: 2
- Potential Total System Capacity: Up to 12kWh
- Weight: Approx. 33kg / 72.75 lbs
- Dimensions: Approx. 694 × 295 × 215mm
- Charge Temperature: 0°C–45°C
- Discharge Temperature: -10°C–45°C
- Storage Temperature: -10°C–45°C
- Display: LED Array
- Internal Battery Pack Rating: IP65
- Overall Product Rating: IP20
5-Year Warranty
The EcoFlow DELTA Pro 3 Smart Extra Battery is backed by a 5-year warranty, providing added peace of mind for a long-term energy-storage investment. Combined with its 4096Wh capacity, automotive-grade LFP cells, 4000-cycle longevity, intelligent protection, and scalable design, it is built to provide dependable additional energy for years to come.
Shipping & Return
xFast & Free U.S. Shipping - We offer fast, free shipping across the United States. View our full Shipping Policy for details.
Easy 30-Day Returns - Enjoy market-leading 30-day returns for added peace of mind. Learn more in our Returns Policy.
Why Buy From Us
xWhy Buy From Turbo Genny
At Turbo Genny, we specialize in premium portable power and energy solutions designed for real-world needs—from home backup and emergencies to RV travel, off-grid living, and outdoor adventures. Our mission is simple: make reliable, clean power easy to buy, easy to understand, and easy to trust.
When you shop with Turbo Genny, you’re not just purchasing a product—you’re choosing a knowledgeable partner committed to long-term support and customer satisfaction.
We Put Expertise First
Power stations and solar generators are not one-size-fits-all. Our team understands the technical details behind capacity, output, expansion, and compatibility, and we’re here to help you choose the right solution for your specific needs. Whether you’re powering a home during outages, running appliances in an RV, or building an off-grid setup, we provide expert guidance before and after your purchase.
You’ll always have access to real people who know the products—not scripted responses.
Authorized Retailer You Can Trust
Turbo Genny is an authorized retailer for every brand we sell, including leading names in portable power and energy storage. That means:
- Genuine products only
- Full manufacturer warranties
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You can shop with confidence knowing your investment is protected.
Competitive Pricing & Price Match Support
We work directly with manufacturers and trusted distributors to offer highly competitive pricing. If you find the same product at a lower price from an authorized retailer, let us know—we’ll do our best to match or beat it.
Our goal is simple: deliver the best value without compromising trust or service.
Fast, Free U.S. Shipping
Most orders ship fast and free from U.S.-based warehouses, with delivery estimates shown at checkout. We process orders quickly so you get your power solution when you need it—especially important during emergencies or planned trips.
Easy 30-Day Returns
We offer easy 30-day returns on eligible products for added peace of mind. If something isn’t right, our support team will guide you through the return process quickly and clearly.
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Your information is protected with secure checkout and encrypted payment processing. And our support doesn’t end after delivery—Turbo Genny provides lifetime expert support, helping you with setup questions, usage guidance, and warranty assistance down the road.
Shop with Confidence at Turbo Genny
From expert advice and authorized products to fast shipping and dependable support, Turbo Genny is built to be a trusted destination for portable power and energy solutions. We’re here to help you power confidently—today and for years to come.
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