EcoFlow DELTA 2 Max Smart Extra Battery


Regular price
Price: $1,399.00
Regular price
List Price: $1,399.00
Sale price
Price: $1,399.00
View Cart


Expandable capacity

Increase the capacity of DELTA 2 Max with an extra 2048Wh.

Triple the power

2-6kWh expandable capacity to fit your energy storage needs. Add up to two DELTA 2 Max Smart Extra Batteries to hit a capacity of 6144wh. Ideal for home backup, caravanning, outdoors or even everyday use.

10-Year Long-lasting LFP Battery

Durable, Safe, Lightweight

With its upgraded LFP battery chemistry, DELTA 2 Max has a lifespan of 3000 complete cycles until it reduces to 80% capacity. You'll get pretty much 10 years of power, even if you use it every day. That's 6× longer than other power stations with a similar capacity and output.

Easy to use

There's no setup. Just plug it into your power station for more energy storage. Using the EcoFlow app, you can charge and monitor the DELTA 2 Max Smart Extra Battery with ease.

Stackable, space-saving design

Featuring an ergonomic, compact design, the DELTA 2 Max Smart Extra Batteries can be securely stacked on top of power stations and each other to save space and minimize clutter.

Capacity: 2048 Wh
Output Port: 51.2V, 3200W Max
Input Port: 51.2V, 3200W Max
Battery: LFP chemistry (LiFePO4 battery), 3000 cycles to >80% capacity
Compatible with: DELTA 2 / DELTA Max 2000/ DELTA 2 Max
Dimensions: 18 × 9 × 11 in
Net weight (lbs): 42lbs

1. Which portable power station is compatible with the DELTA 2 Max Smart Extra Battery?

DELTA 2, DELTA Max, and DELTA 2 Max are compatible with the DELTA 2 Max Smart Extra Battery.

2. How many extra batteries can I use with the a portable power station?

DELTA 2 supports only 1 extra battery while the DELTA Max and DELTA 2 Max support up to 2.

3. Can I charge the battery without connecting to a power station?

Yes. You can use a Smart Generator to charge an extra battery even when it's not plugged into a power station. All other charging methods require it to be connected to a power station.

4. What makes the "Smart Extra Battery" smart?

This battery can be monitored and controlled on the EcoFlow app.


60 months


EcoFlow DELTA 2 Max Smart Extra Battery User Manual


Order Confirmation

As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your choice of payment for the purchase.

If your item happens to be on back-order or unavailable, we will void the pre-authorization and reach out to you via e-mail. If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

Order Shipment

Your order will ship within 5 business days. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. You should receive your item(s) between 5-10 business days.

We offer free shipping on all orders within the United States via FED EX, UPS, DHL and USPS.

If you have any questions feel free to give us a call or email us at


    • Image of  topreasons Fast, Free Shipping
    • Image of  topreasons Easy Returns
    • Image of  topreasons Product Guarantees
    • Image of  topreasons Top Customer Service
    • Image of  topreasons Secure Checkout

    Customer Reviews

    Be the first to write a review