EcoFlow DELTA 2 Smart Extra Battery
Estimated Delivery Between
and .
Order within to get it by the earliest date.
Free Shipping In The USA | Call Us: 877-556-3347
Free Shipping In The USA | Call Us: 877-556-3347
Share it with us now and we will beat it. Get the best deal online, guaranteed!
and .
Order within to get it by the earliest date.
Build Your Perfect Off-Grid Rig With Our System Calculator
Visit CalculatorThe EcoFlow DELTA 2 Smart Extra Battery is the perfect companion for extending the power capabilities of your EcoFlow DELTA 2 Portable Power Station. With seamless integration and easy setup, this extra battery doubles your capacity to 2048Wh, ensuring longer-lasting power for your home, outdoor adventures, or emergency situations.

Expandable Capacity
Doubles the capacity of the DELTA 2 from 1024Wh to 2048Wh, providing reliable, long-lasting power for more extended use.
Seamless Integration
The extra battery connects effortlessly to the DELTA 2, creating a single, unified system with synchronized performance monitoring.
Compact and Portable Design
Despite its powerful capacity, the extra battery is designed to be portable, easy to transport, and ideal for various situations.
Durable LFP Battery Technology
Built with advanced LFP (LiFePO4) battery technology that offers over 3,000 cycles, ensuring a longer lifespan than conventional batteries.

Extended Home Backup Power
Doubles the energy storage capacity of your DELTA 2, keeping essential appliances and devices powered during prolonged outages.
Outdoor and Recreational Use
Ideal for camping trips and extended outdoor events where power is needed for lights, small appliances, and electronics.
Remote Work and Off-Grid Living
Supports continuous power for remote workstations or off-grid cabins, keeping laptops, Wi-Fi routers, and equipment running longer.
Emergency Preparedness
A critical addition to your emergency kit, providing backup power for medical devices, communication systems, and essential home appliances.

Everything you need is included with your product.
| Category | Specifications |
| Capacity | 1024Wh |
| Size | 15.7 × 8.3 × 11.1 in. / 40 × 21.1 × 28.1 cm |
| Cycle Life | 3000 cycles to 80+% capacity |
| Weight | 21 lb / 9.5 kg |
| Battery Chemistry | LFP |
| Applicable Models | DELTA 2 |
How do I connect the DELTA 2 Smart Extra Battery to the DELTA 2 Power Station?
The extra battery connects easily with the included battery connection cable, creating a seamless integration with your existing DELTA 2.
Does the extra battery need to be charged separately?
No, the DELTA 2 Smart Extra Battery charges simultaneously with the DELTA 2 when connected.
What is the lifespan of the DELTA 2 Smart Extra Battery?
The LFP battery technology offers up to 3,000 full cycles, maintaining at least 80% of its original capacity for years.
Can I use the extra battery on its own?
No, the DELTA 2 Smart Extra Battery must be connected to the DELTA 2 Power Station to function.
Is it safe to use indoors?
Yes, the battery is designed for safe indoor use, with no emissions or fumes.
How long does it take to recharge the combined setup?
When connected, the DELTA 2 and the Smart Extra Battery recharge together, utilizing EcoFlow’s X-Stream fast-charging technology for efficient recharging.
Shipping is FAST & FREE across the US. Read our full Shipping Policy here.
We offer market leading Easy 30 Day Returns. Read more about our Returns Policy here.
We get it. You've got a lot of choices when it comes to online retailers. Here's why we think you should shop with us at Off-Grid Source.
I am always hesitant to buy things at places. I have never shopped, but I thank God that I ran into this store. I want to give a shout out to Manny who with great patience and knowledge helped me get my orders. They are very knowledgeable about their equipment that they sell. They are very compassionate for their customers. 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.
Nice product. A little weird that it can't be charged stand alone, but not that big of a deal. Just need to have both batteries together. Nonetheless, good price during Black Friday. Additionally, they honored another -($50) discount as there was a marketed price decrease during a flash sale. They didn't have to do this, but they did. Much appreciated.
It was easy to connect to my Delta 2 and added extra battery power. No complaints. So far so good.
Very easy to setup, good price in Black Friday deal. Very fast shipping.
I recently purchased a delta2 smart extra battery it would soon pay dividends during a power outage! With twice the power it handled my needs perfectly! I love my EcoFlow devices!
Trusted By 10,000+ Customers. See All Reviews.
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.
Sign up for emails and get exclusive offers, new product drops, and expert advice to help you build the right solar setup with confidence.