EF ECOFLOW DELTA 3 Series Smart Extra Battery, 1024Wh

EF ECOFLOW DELTA 3 Series Smart Extra Battery adds 1024Wh to compatible EcoFlow power stations. It is an expansion battery, not a standalone power station, so confirm your station model before buying.

At a glance

Adds 1024Wh to compatible Delta power stations, according to the listing.
Listed for Delta 2, Delta 3, Delta 3 Plus and Delta 3 1500. Delta 3 Classic is excluded.
The listing describes plug-and-play setup and app monitoring and control.
LFP chemistry is associated in the listing with a claim of 3000+ charging cycles.

Price

$389.00Save 16%

Reference price: ~~$462.00~~

Price checked: Nov 12, 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

EF ECOFLOW DELTA 3 MAX Plus with Extra Battery, 4096Wh, 3000W Max Output | Expandable Capacity Up to 10kWh, Fast 0–80% Rechar

$1,949.00

EF ECOFLOW Solar Generator Delta 3 with 220W Bifacial Panel, 1024Wh 1800W | Portable Power Station, LFP Battery 1800W AC/100W

$849.00

Pros and cons

Pros

A direct capacity expansion option for the listed compatible EcoFlow stations.
App monitoring and control are described for the connected battery.
The listing gives a specific compatible-model list, which can help buyers verify fit before purchase.

Cons

This is an expansion battery rather than a complete power station, so it requires a compatible host unit.

Technical specifications

11 specifications

Identity
Brand	EF ECOFLOW
Model	EF-DL-E10

Power and battery
Capacity	1024Wh
Battery type	Lithium Ion
Battery chemistry	LFP

Compatibility and operation
Compatible power stations	Delta 2/Delta 3/Delta 3 Plus/Delta 3 1500
App operation	Use the EcoFlow app to monitor and control the DELTA 3 Smart Extra Battery.
Claimed cycle life	3000+ charging cycles
Claimed capacity retention	10 years of daily use until it hits 80% of its original capacity.

Dimensions and installation
Dimensions listed	16 x 8 x 8 inches
Weight listed	12.5 kg

What to know before buying

Compatibility details are specific: listed for Delta 2, Delta 3, Delta 3 Plus and Delta 3 1500, but not Delta 3 Classic. Confirm the exact host model, especially if your station name is similar. The stated 10-year daily-use and 3000+ cycle figures are manufacturer claims, not verified performance guarantees.

What’s in the box

Included

Delta 3 Series Smart Extra Battery

Who is it for?

A good fit for

Owners of a listed compatible EcoFlow power station seeking additional stored capacity.
Buyers who want to monitor and control an extra battery through the EcoFlow app.

Less suited to

Anyone needing a standalone power station or an expansion battery for the Delta 3 Classic.
Buyers whose power station model is not on the stated compatibility list.

EF ECOFLOW DELTA 3 Series Smart Extra Battery, 1024Wh · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 313 ratings

5 stars82%82%
4 stars7%7%
3 stars1%1%
2 stars4%4%
1 star6%6%

Customer feedback describes the battery as easy to set up and appreciates its power and capacity as an addition to power stations. One reported example says it powered a refrigerator for over 12 hours during an outage, though that runtime depends on the appliance and setup. Compatibility feedback is mixed, and value and accuracy also draw mixed reactions. This makes checking the exact host model especially important. The generally favorable aggregate rating does not resolve those compatibility or value concerns.