SKU: 26784564705

EcoFlow DELTA 2 Max Smart Extra Battery

Sale price$314.55 Regular price$349.50
Save 10%

Pay in installments of $87.38 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

EcoFlow DELTA 2 Max Smart Extra BatteryBoost the runtime of your EcoFlow power system with the DELTA 2 Max Smart Extra Battery. Designed to connect seamlessly with DELTA 2, DELTA Max, and DELTA 2 Max power stations, it offers an additional 2048Wh of energy to support home backup, outdoor power, and off grid use. Featuring advanced LFP battery technology for a long service life and consistent performance, this expansion battery is a smart and budget friendly way to scale your energy

Boost the runtime of your EcoFlow power system with the DELTA 2 Max Smart Extra Battery. Designed to connect seamlessly with DELTA 2, DELTA Max, and DELTA 2 Max power stations, it offers an additional 2048Wh of energy to support home backup, outdoor power, and off-grid use. Featuring advanced LFP battery technology for a long service life and consistent performance, this expansion battery is a smart and budget-friendly way to scale your energy storage. Use the EcoFlow app for easy real-time monitoring and management — no complex setup required.

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 gain a capacity of 6144Wh, ideal for home backup, RVing, outdoor adventures, and everyday use. Much more affordable, it costs up to 30% less than a power station of the same capacity.

10-Year Long-lasting LFP Battery

Durable, Safe, Lightweight

With its upgraded LFP battery chemistry, the DELTA 2 Max Smart Extra Battery 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 6x— 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.

Features

  • Expandable Storage Capacity — Adds an extra 2048Wh to DELTA 2, DELTA Max, and DELTA 2 Max models.
  • Up to 30% More Cost-Efficient — Expand power from 2-6kWh by linking up to two DELTA 2 Max Smart Extra Batteries for a total of 6144Wh storage capacity — with savings compared to buying a larger standalone power station.
  • Long-Lasting LFP Battery — Built for 10 years of daily use with over 3000 charging cycles, maintaining up to 80% of original capacity.
  • hassle-free setup — Plug-and-play design plus app control for easy monitoring and power management through the EcoFlow app.

Specifications

General

  • Model: EFD350-EB
  • Weight: 42 lbs
  • Dimensions: 18 in x 9 in x 11 in
  • Capacity: 2,048Wh

Input

  • Extra Battery Port Input: 51.2V = 2000W Max

Output

  • Extra Battery Port Output: 51.2V = 3,200W Max

Battery Details

  • Type: LFP (Lithium Iron Phosphate)
  • Cycle Life: 3,000 cycles to 820% + capacity (kept exactly as given)
  • Protection Systems:
  • Over Voltage Protection
  • Overload Protection
  • Over Temperature Protection
  • Short Circuit Protection
  • Low Temperature Protection
  • Low Voltage Protection
  • Overcurrent Protection

Operating Conditions

  • Optimal Operating Temperature: 68°F to 86°F
  • Discharge Temperature Range: 14°F to 113°F
  • Charging Temperature Range: 32°F to 113°F

Warranty

Energy Systems Central Stores is an authorized retailer of EcoFlow products. Because of this, we pass on EcoFlow's manufacturer 5-Year warranty to you.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 26784564705

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 20 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Sydney Hammond
Lake Worth, US
★★★★★ 5
Love!!
Color: Gold
Absolutely love! Great quality. Love the built in wallet and the straps that come with it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
C
Verified Purchase
Carroll Headspeth
Alexandria, US
★★★★★ 1
Poor quality
Color: Gold
Didn't like the color or material
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
A
Verified Purchase
Amy K. Davis
Whiting, US
★★★★★ 4
What a nice surprise
Color: Black, Color: Black
This purse totally surprised me. It is so nice. It feels rich, soft but structured. Looks way more expensive. I love it. Update. My only complaint after using is the magnet closure isn’t really strong so can open easily
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 13, 2025
K
Verified Purchase
Kk
Louisville, US
★★★★★ 5
Amazing bag
Color: Black
Omg this is seriously the cutest bag. I purchased the black so classy looking and I love that you can carry It 3 different way. It looks like an expensive bag. Can’t wait to use It at some weddings as a clutch and then a cross body or shoulder bag other days. . It has card slots in It which is so good when you don’t want to carry a wallet. I did put a small wallet my phone and lip gloss and keys and still have room.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 28, 2025
A
Verified Purchase
Ana Rodriguez
Boise, US
★★★★★ 3
Nice bag
Not a bad bag just not my favorite. Looks different once it came in the mail and the quality wasn’t as nice but still very spacious. It’s a nice daily bag but not what I had needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 19, 2025

recommand products