Ships to all 50 states + United Kingdom, Canada, Australia & FranceFree shipping · 1-day handling · 2–7 days after dispatchCustomer supportBuild a guided starting point

Batteries

In stock

EcoFlow

EcoFlow DELTA 3 Series Smart Extra Battery (Recommended Accessory)

$350.10
In stockShips from Baton Rouge, LA30-day warrantyFrom delivery, on eligible productsFree shippingProcessing 1 business day after payment; delivery about 2–7 business days after dispatch

Check local voltage, plug, installation, and product-certification requirements before ordering. We confirm compatibility and availability for your destination before payment.

Overview

Owners of a DELTA 3 Plus or DELTA 3 can add 1024Wh of storage with this Smart Extra Battery. It is a simple way to extend runtime for home backup or longer trips.

Planning a system? Read our guide: How to size a battery backup system for your home.

Key benefits

  • Adds capacity without replacing your power station.
  • LFP chemistry is rated for 10 years of daily use before reaching 80% of original capacity.
  • Plug-and-play connection.

Key features

  • Adds 1024Wh to a DELTA 3 Plus or DELTA 3.
  • LFP battery rated for 3000+ charging cycles.
  • Monitor and control through the EcoFlow app.

Ideal use

Best for DELTA 3 and DELTA 3 Plus owners who need more hours of backup or off-grid power.

Key specifications

Model / SKU
EFDELTA3P-EB
Brand
EcoFlow
Category
Batteries

From the manufacturer

*Increase the capacity of DELTA 3 Plus/DELTA 3 with an extra 1024Wh. *Get 10 years of daily use until it hits 80% of its original capacity. Embrace 3000+ charging cycles enabled by the LFP battery chemistry. *Plug-and-play system. Use the EcoFlow app to monitor and control the DELTA 3 Smart Extra Battery. *With one of the most comprehensive 5-year warranties available, we go the extra mile to give you peace of mind.

Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.

Before you order

We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.

Ask our team to confirm this extra battery works with your DELTA 3 series unit. Message our team on WhatsApp.

WhatsApp chat