ecoflow delta 3 max plus 2048wh smart extra battery centered front-facing view of a compact, rectangular LFP auxiliary battery with a matte silver housing, recessed dark-gray center panel, visible handle recess and narrow status strip above the printed "SMART EXTRA BATTERY" label; plug-and-play module to expand DELTA 3 Max Plus and DELTA 3 Ultra Plus capacity, about 25% reduced volume for easier stacking and storage, monitor charge level and temperature via the EcoFlow app; suitable for extending home backup or portable power.
EcoFlow Delta 3 Max Plus 2048wh Smart Extra Battery
Hero image 0 of EcoFlow Delta 3 Max Plus 2048wh Smart Extra Battery, 0 of 8
EF EcoFlow

EcoFlow Delta 3 Max Plus 2048wh Smart Extra Battery

|2 ratings

Smart summary

Generated by AI
  • Adds Extra Power

    Adds Extra Power

    Adds 2048Wh of extra capacity to your Delta 3 power station.
  • Easy To Store

    Easy To Store

    The 25% smaller volume makes it easier to carry, store, and stack.
  • Longer Battery Lifespan

    Longer Battery Lifespan

    Built with an LFP battery to give you a longer overall lifespan.
  • No Setup Required

    No Setup Required

    Simply plug it in to start using the extra power right away.
  • Track Power Via App

    Track Power Via App

    Easily monitor the charge level and temperature using the EcoFlow app.

Specifications

  • Increase the capacity of DELTA 3 Max Plus and DELTA 3 Ultra Plus with an extra 2048Wh.
  • The extra battery's overall volume is reduced by approximately 25% compared to the DELTA 2 Max Smart Extra Battery, making it easier to store, carry and stack.
  • Plug-and-play without setup. Monitor the charge level and temperature via the EcoFlow App.
  • Get peace of mind with a 3-year standard warranty and 2 additional years when you register through the EcoFlow App.
Current price is $849.98
Prices may vary in club and online
How do you want your item?

Shipping

Free for Plus on eligible orders over $50
Columbus, 43215
Arrives by Thu, Nov 5
Return or replace anytime.
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Limited time! Get a $60 statement credit when you open an account between 10/28-12/2 and use it to make $30 in eligible Sam’s Club purchases within 30 days¹

About this item

Product details

Increase the capacity of DELTA 3 Max Plus and DELTA 3 Ultra Plus with an extra 2048Wh.
The extra battery's overall volume is reduced by approximately 25% compared to the DELTA 2 Max Smart Extra Battery, making it easier to store, carry and stack.
Plug-and-play without setup. Monitor the charge level and temperature via the EcoFlow App.
Get peace of mind with a 3-year standard warranty and 2 additional years when you register through the EcoFlow App.
info:
If the item details above aren't accurate or complete, we want to know about it. 

Key specifications

Specifications

  • Increase the capacity of DELTA 3 Max Plus and DELTA 3 Ultra Plus with an extra 2048Wh.
  • The extra battery's overall volume is reduced by approximately 25% compared to the DELTA 2 Max Smart Extra Battery, making it easier to store, carry and stack.
  • Plug-and-play without setup. Monitor the charge level and temperature via the EcoFlow App.
  • Get peace of mind with a 3-year standard warranty and 2 additional years when you register through the EcoFlow App.

Warnings and disclaimers

Ingestion Hazard

This product contains a battery. Death or serious injury can occur if ingested. A swallowed battery can cause Internal Chemical Burn in as little as 2 hours. Keep new and used batteries OUT OF REACH OF CHILDREN. Seek Immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.

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Showing 1-2 of 2 reviews

Nov 16, 2025
Reviewer name: Willk
5 out of 5 stars
5 out of 5 stars review

Quite clean

Easy to use easy set up. App its a plus. I love it

Review from ecoflow
Helpful?5UKF5XPJSJK219498619759
Mar 15, 2026
Reviewer name: Adolphe
3 out of 5 stars
3 out of 5 stars review

1024Wh?

First, this battery is not 1024Wh as put in the title. Second, it offers nothing special but a $50 higher price and no extra warranty compared to the current sales all over internet. Last but not the least, you need to buy the newest battery adapter that cost several hundreds of dollars just to connect 2 of these batteries to a power station. It makes no sense to spend almost $900/extra battery and spend around $300 for the adapter because the battery outlets have been reduced from 2 on Delta 2 series to 1 on Delta 3 series to sell an additional extra adapter. Bad business!

Helpful?5UKF5XPJSJK219498619759
reply from Ecoflow Team

We're sorry for the inconvenience you've experienced. Please reach out to us at support@ecoflow.com or call us at +1 (800) 368-8604, Monday to Friday, 9 a.m. to 7 p.m. (EST). We're here to help and will do our best to resolve your issue quickly.

Current price is $849.98
Prices may vary in club and online
How do you want your item?

Shipping

Free for Plus on eligible orders over $50
Columbus, 43215
Arrives by Thu, Nov 5
Return or replace anytime.

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