EcoFlow
EcoFlow WAVE 3 Add-on Battery (Recommended Accessory)
The WAVE 3 Add-on Battery gives 1024Wh of capacity using LFP chemistry. It detaches for carrying or storage.
$568.65
EcoFlow DELTA 3 Max Plus (2048Wh) Smart Extra Battery
$679.15
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
Shipping & delivery30-day returnsWarranty
Check local voltage, plug, installation, and product-certification requirements before ordering. We confirm compatibility and availability for your destination before payment.
Overview
Designed for the DELTA 3 Max Plus and DELTA 3 Ultra Plus, this Smart Extra Battery adds 2048Wh of LFP storage to your existing power station. It is about 25% smaller by volume than the DELTA 2 Max Smart Extra Battery, so it is easier to store and stack.
Planning a system? Read our guide: How to size a battery backup system for your home.
Key benefits
- Adds capacity to a DELTA 3 Max Plus or DELTA 3 Ultra Plus without buying a second power station.
- Smaller footprint makes it easier to carry and stack.
- Plug-and-play, with no setup required.
Key features
- 2048Wh of extra capacity.
- Compatible with DELTA 3 Max Plus and DELTA 3 Ultra Plus.
- Roughly 25% less overall volume than the DELTA 2 Max Smart Extra Battery.
- LFP battery chemistry for long lifespan.
- Charge level and temperature visible in the EcoFlow app.
Ideal use
Ideal for DELTA 3 Max Plus or Ultra Plus owners who need longer runtime for home backup or extended off-grid use.
Key specifications
- Model / SKU
- EFD3MP-EB
- Brand
- EcoFlow
- Category
- Batteries
- Energy capacity
- 2,048 Wh
From the manufacturer
Expandable capacity - Increase the capacity of DELTA 3 Max Plus and DELTA 3 Ultra Plus with an extra 2048Wh. Compact size - 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. Long lifespan with an LFP battery. Easy to use - Plug-and-play without setup. Monitor the charge level and temperature via the EcoFlow App. Up to 5-Year Warranty - Get peace of mind with a 3-year standard warranty and 2 additional years when you register through the EcoFlow App.
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 matches your DELTA 3 power station model. Message our team on WhatsApp.
More in batteries
EcoFlow
EcoFlow RIVER Pro + EcoFlow RIVER Pro Extra Battery
This listing pairs the RIVER Pro with the RIVER Pro Extra Battery, which doubles the station's capacity from 720Wh to 1440Wh. The RIVER Pro itself weighs 15.9 lbs and offers three pure sine wave AC outlets.
$849.15
EcoFlow
EcoFlow DELTA 2 Max Smart Extra Battery
Adding a Smart Extra Battery increases the capacity of a DELTA 2, DELTA Max, or DELTA 2 Max. It is plug-and-play and can be monitored through the EcoFlow app.
$509.15
EcoFlow
RIVER 3 Max (RIVER 3 Plus + Extra Battery 300)
RIVER 3 Max combines a RIVER 3 Plus with an Extra Battery 300 for more runtime. The station provides 600W rated output and 1200W X-Boost, and the system expands up to 858Wh with a wire-free connection.
$449.10