EcoFlow DELTA Pro Smart Extra Battery
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Visit CalculatorThe EcoFlow DELTA Pro Smart Extra Battery is the ultimate companion for expanding the capacity of your EcoFlow DELTA Pro Power Station. By connecting this extra battery, you can double or triple the energy storage, allowing for longer power supply during extended blackouts, off-grid living, or outdoor adventures. The Smart Extra Battery seamlessly integrates with the DELTA Pro, providing a unified system with real-time power monitoring and intelligent charging.

Expandable Power Solution
Adds an additional 3600Wh of capacity to your DELTA Pro, bringing the total to 7200Wh or more when multiple units are connected.
Seamless Integration
Connects effortlessly with the DELTA Pro, syncing for simultaneous charging and discharging.
Real-Time Monitoring
View power levels, input, and output through the EcoFlow app for easy management.
Durable and Long-Lasting LFP Battery
Built with lithium iron phosphate (LFP) chemistry, providing 3500 cycles to 80%+ capacity for a reliable and sustainable energy solution.
Extended Home Backup
Doubles or triples the power capacity of your DELTA Pro to keep more appliances and devices running during long-term outages.
Off-Grid Living
Provides additional power for cabins, RVs, and other remote settings, supporting essential electronics and home comfort.
Outdoor and Recreational Use
Enhances the runtime of your power station for camping, tailgating, or other outdoor events.
Professional Use
Supports tools and equipment for worksites, ensuring consistent power for extended tasks.
Emergency Preparedness
Offers a robust backup to maintain power for crucial medical devices and communication equipment.

Everything you need is included with your product.
| Category | Specifications |
| Capacity | 3600Wh |
| Battery Type | LFP (Lithium Iron Phosphate) |
| Cycle Life | 6,500 cycles to 50% capacity, 3,500 cycles to 80% capacity |
| Shelf Life | 1 year (after a full charge) |
| Dimension | 25 x 11.2 x 16.4 in / 63.5 x 28.5 x 41.6 cm |
| Weight | Approx. 84lbs. / 38kg |

How do I connect the Smart Extra Battery to the DELTA Pro?
The Smart Extra Battery connects via the included battery connection cable, syncing seamlessly with your DELTA Pro for simultaneous charging and discharging.
Can I use the DELTA Pro while the Smart Extra Battery is connected?
Yes, the DELTA Pro and the Smart Extra Battery can be used simultaneously, providing an extended power supply.
What is the lifespan of the Smart Extra Battery?
The LFP battery technology offers up to 3500 full cycles, maintaining at least 80% of its capacity for years of reliable use.
Can I monitor the extra battery’s status?
Yes, you can view the battery’s power level, input, and output through the EcoFlow app when connected to the DELTA Pro.
How many extra batteries can I connect to the DELTA Pro?
You can connect up to two Smart Extra Batteries to the DELTA Pro for expanded capacity.
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Plug and play as soon as i received it. House will be partially off the grid with the addition of the PV panels.
Would highly recommend the system it helps for being off greater
Very happy with the extra battery. Thanks to the extra battery, when the power goes out in our neighborhood, I wont have to worry about a thing. I can just swap to my ecoflow setup. With the extra battery and solar panel, everything recharges really fast in the day. Super excited to have the power go out again, as odd as it sounds!! Any excuse to use my Ecoflow!!
Shipped on time, arrived on time, packaged very well, good protection. This is my fifth Ecoflow unit and I have to say that I am very pleased with it in quality and construction. The screen is easy to read and the bluetooth works good. Great emergency power for those storms that we will have someday. I would like to get one more battery for my system to make it complete. Very pleased overall.
I now own a river, river max,Delta 2 with extra battery, Delta 2 max with extra battery, wave 2 with battery and the Delta pro with extra battery and love them all.
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I was a DIY solar power wannabe... that is 'til I connected with Manny... The man's a prince! He not only knows his stuff; he walked me through all things electrical. To make sure I had all I needed... he gave me his cell phone # to text him anytime I got confused... nights and weekends included. The prices were very competitive... definitely go with Manny -- you won't go wrong!
Bruce D.
I am always hesitant to buy things at places I have never shopped... I want to give a shout out to Manny who with great patience and knowledge helped me get my orders... I felt valued as a customer and I will definitely be back in the future. I highly recommend them, they make you feel like family.
Jennene A.
I'm about to go off grid. I called Manny, he walked me through everything so I could truly understand what I needed and never tried to upsell me. He was honest and made a customer for life.
Ray B.
I would personally like to thank Manny... I purchased the inverter and decided I needed to return it... Manny was very understanding and went out of his way to help me return the product and not even have to pay for shipping return. He gives this company reputation, honor and quality customer service!
Roger V.
I have been talking with Manny the owner... He has not only helped me design a system but he's been assisting with the install and components. I am super pleased so far with the assistance.
Jeff S.
We added 2 more batteries to our current set up. Pleased with the customer service from Off-Grid Source! Will be back!
Jason
Very fast response times. Very professional. I highly recommend!
Ray W.
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