EcoFlow DELTA Pro 3 Smart Extra Battery
EcoFlow DELTA Pro 3 Smart Extra Battery
SKU: EFDELTAPRO3EB
- Regular price
- Price: $2,099.00
- Regular price
- List Price: $2,599.00
- Sale price
- Price: $2,099.00
- Unit price
- / per
Notify me when this product is available:
In stock

Couldn't load pickup availability
- Free Shipping - Quick and Easy
- Easy 30 Day Returns
Manufacture's Warranty
Manufacture's Warranty
Manufactures Warranty - PowerGen Store is an Authorized Dealer for all of our Suppliers, so every product you purchase includes the Full Manufactures Warranty provided directly by the Manufacturer. See Manufacture's Website for More Details
Price Guarantee
Price Guarantee
At PowerGen Store, we are committed to offering you the best prices online. If you find a lower price at another online store within two months of your purchase, just let us know.
Click Here to review full Price Guarantee Policy
Shipping Policy
Shipping Policy
At PowerGen Store, we are dedicated to ensuring our customers enjoy a smooth and efficient shipping experience. As a special benefit for our valued customers, we are pleased to offer FREE SHIPPING in the Contiguous 48 United States (See below for Alaska & Hawaii). To guarantee timely delivery of your orders, we have built a comprehensive network of couriers. Please see the detailed information below regarding our shipping Policy.
Click Here to read out full Shipping Policy
Return Policy
Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
Click Here to review our full Returns Policy

Description
EcoFlow DELTA Pro 3 Smart Extra Battery: Double Your Power Capacity
Unlock extended energy independence with the EcoFlow DELTA Pro 3 Smart Extra Battery. This powerful addition doubles your DELTA Pro 3's capacity to a robust 7.2kWh, ensuring you have enough power to keep essential devices running during power outages or off-grid adventures. Whether you’re camping, preparing for emergencies, or simply seeking reliable backup power, this smart battery solution delivers the power you need when you need it.
Features & Benefits:
Double Your Capacity: Adds 3.6kWh to your DELTA Pro 3, bringing the total capacity to 7.2kWh for longer-lasting power.
Ideal for Off-Grid & Emergency Power: Perfect for powering appliances, electronics, and even medical devices during outages or in off-grid environments.
Seamless Integration: Easily connects to your DELTA Pro 3 for a smooth, intuitive experience, expanding your power options effortlessly.
Energy Independence: Enjoy uninterrupted power and peace of mind, knowing you have the backup you need for critical devices.
Compact and Portable: Designed for convenience, the Smart Extra Battery is easy to transport and store, ensuring you're ready for any situation.
The EcoFlow DELTA Pro 3 Smart Extra Battery is the perfect companion for your DELTA Pro 3, ensuring that you can power everything you need for longer periods and with greater peace of mind.
Specifications
Color | Black & Galactic Silver |
---|---|
Weight | 72.7 lbs |
Dimensions | 694 × 295 × 215mm | 27.3 x 11.61 x 8.4 |
Capacity | 4096 Wh |
Output | 40V-58.4V=100A Maximum |
Input | 40V-58.4V=80A Maximum |
Display | LED Array |
Discharge Temperature | -10°C ~ 45°C | 14 ~ 113°F |
Charge Temperature | 0°C ~ 45°C | 32 ~ 113°F |
Storage Temperature | -10°C ~ 45°C | 14 ~ 113°F |
Wheels Support | No |
Tie Rod Support | No |
Stack | Horizontal or Vertical |
Connection | 1 x Extra Battery Port |
What’s in the Box – EcoFlow DELTA Pro 3 Smart Extra Battery
Item | Quantity |
---|---|
EcoFlow DELTA Pro 3 Smart Extra Battery (4096Wh LiFePO4) | 1 |
Battery Connection Cable | 1 |
User Manual & 5-Year Warranty Card | 1 |
FAQs – EcoFlow DELTA Pro 3 Smart Extra Battery
Q: What is the EcoFlow DELTA Pro 3 Smart Extra Battery used for?
A: This high-capacity 4096Wh LiFePO4 battery is designed to connect with the EcoFlow DELTA Pro 3 Portable Power Station, expanding total storage capacity for longer runtimes during home backup, off-grid living, or RV adventures.
Q: How much capacity can it add?
A: Each Smart Extra Battery adds an additional 4096Wh to your DELTA Pro 3. With two connected, a single DELTA Pro 3 can reach up to 12kWh of storage.
Q: Can I use more than one extra battery?
A: Yes. In a whole-home system with multiple DELTA Pro 3 units, you can connect up to six extra batteries for a massive 36kWh capacity—or even up to 48kWh with EcoFlow’s Smart Generators and Smart Home Panel 2.
Q: What type of battery does it use?
A: It uses advanced LiFePO4 (LFP) battery chemistry, offering over 4000 charge cycles to 80% capacity, excellent safety, and a long lifespan—ideal for off-grid or emergency backup.
Q: Does it have its own charging port?
A: No. The Smart Extra Battery charges and discharges through the connected DELTA Pro 3 Portable Power Station.
Q: Can it be charged with solar panels?
A: Indirectly, yes. When paired with a DELTA Pro 3 connected to solar panels, the extra battery will charge along with the main unit.
Q: Is it safe for indoor use?
A: Yes. The Smart Extra Battery produces no fumes and operates silently, making it safe for use inside homes, RVs, or cabins.
Q: How do I connect it to my DELTA Pro 3?
A: Use the included Battery Connection Cable to securely link it to your DELTA Pro 3—setup is quick and tool-free.
Q: What’s the warranty?
A: The EcoFlow DELTA Pro 3 Smart Extra Battery includes a 5-year manufacturer’s warranty for long-term reliability.


