EcoFlow DELTA 2 Max Smart Extra Battery
SKU: 26784564705

EcoFlow DELTA 2 Max Smart Extra Battery

Sale price$314.55 Regular price$349.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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

4.5 ★★★★★
Based on 397 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Srinivas
Boise, US
★★★★★ 5
Best biltong tasted to date
Biltong depot produces the best biltong I have tasted to date . I was ordering the 8oz slabs till now but I am going to order these instead . Same taste but the convenience is that it’s already been thinly sliced . The only thing I could say is a negative is it has too much sodium which could be reduced.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
E
Verified Purchase
Erin
Belleville, US
★★★★★ 5
Actual biltong that is not dried to the point of being jerky
If you are like me, you have ordered biltong as slabs and pre-sliced slabs from a bunch of companies promising the real deal. Too many of those companies trim the fat or dry things out so much that it might as well be American beef jerky with coriander added to the spice blend. This just arrived and we opened the bag not expecting anything different honestly. I am sitting here eating it and logging on to write a review because this is finally the real deal. I wouldn't say that it is wet, but it isn't American jerky level dry either and there is good fat on the pieces. It's pricey, and there was a dry piece or two and a bit of fat that hadn't been properly flavored, but it is the next best thing to a freshly sliced wet and fat slab. If you can afford this treat, don't waste your money on the less expensive stuff -this is what you are missing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2022
A
Verified Purchase
ana
Fort Morgan, US
★★★★★ 1
MADE MY FAMILY SICK
Awful. Came in package gummed up. Made my family sick. Never order this. Ive had better product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
S
Verified Purchase
Sheila
Grantham, US
★★★★★ 5
Delicious Biltong
This biltong is so delicious! And there’s fat! I’m now going to have a monthly biltong/droewors budget-.these products are really authentically South African
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 19, 2026
M
Verified Purchase
Mahogany Lash and Body
Fort Morgan, US
★★★★★ 5
Privacy is what I was looking for and that’s what I got !!!
Color: Black, Size: Wheel-132''
Right now, I am in a shared room and it is perfect because I can block out and have some privacy for my clients. I purchased the six panel and realized it was too much so I was able to only set up three panels and it was just enough room for my clients to walk through to my side, but also have a sense of privacy. It’s not heavy at all very lightweight but durable at the same time. Because of the wheels, I’m able to easily glide it across the floor. This is a really good product. I didn’t need my husband to help me set it up though LOL
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 29, 2026

recommand products