Smart Extra Batteries | EcoFlow
 

EcoFlow Smart
Extra Batteries

Double your energy storage for less cost

EcoFlow Smart Extra Batteries

A Smart Extra Battery conveniently connects to an EcoFlow portable power station to double or even triple the original storage capacity. Need extra energy storage but don't want to upgrade your power station? Then an Extra Battery is the perfect option. With LFP battery chemistry and fast-charging capabilities, EcoFlow Extra Batteries offer many of the same benefits as a power station with a more affordable price tag.

Using EcoFlow Smart Extra Batteries

For Home Power Backup

1 Week use:
DELTA Pro + DELTA Pro Extra Battery

Microwave
Refrigerator
Television
Lights
Vacuum Cleaner
Space Heater

For RV Life

3 days use:
DELTA 2 Max + DELTA 2 Max Extra Battery or DELTA Max + DELTA Max Extra Battery

Phone
Mini-fridge
Kettle
Lights
Laptop
Air Conditioner

For Outdoors

1 day use:
DELTA 2 + DELTA 2 Extra Battery

Camera
Mini-fridge
Phone
Lights
Drone
Speaker

Multiple Options

Extra 1024Wh battery for EcoFlow DELTA 2.

Extra 2016Wh battery for EcoFlow DELTA 2, EcoFlow DELTA Max, and EcoFlow DELTA 2 Max.

Extra 2048Wh battery for EcoFlow DELTA 2, EcoFlow DELTA Max, and EcoFlow DELTA 2 Max.

Extra 3600Wh battery for EcoFlow DELTA Pro.

Why Choose EcoFlow Extra Batteries?

Expand energy storage with plug-and-play, long-life batteries that fit your budget and power needs.

Triple Storage Without Breaking the Bank

All of our DELTA Series power stations have a compatible Extra Battery that doubles or even triples capacity. Extra batteries are a more affordable option than upgrading your unit, at up to 30% cheaper.

Easy to Use

There's no setup. Just plug into your power station to store more energy, charge or even monitor the Extra Battery using the EcoFlow app.

Long-life

With the same LFP battery chemistry as our power stations, Extra Batteries offer 3000+ cycles*, giving you around 10 years of everyday use.

*After which, capacity reduces to 80%.

Stackable Design

Compact and with an ergonomic design, Extra Batteries safely stack on top of power stations and each other to save space and reduce clutter.

EcoFlow Extra Battery Comparison

See which Smart Extra Batteries are compatible with our power stations and how far you can expand your energy storage.

EcoFlow DELTA 2
Extra Battery

$799

EcoFlow DELTA Max
Extra Battery

$1,199

$1,599

EcoFlow DELTA 2 Max
Extra Battery

$1,399

EcoFlow DELTA Pro
Extra Battery

$1,999

$2,799

Capacity

1024Wh

2016Wh

2048Wh

3600Wh

Weight

21lbs / 9.5kg

40lbs /18 kg

42lbs / 19kg

84lbs / 38kg

Size

15.7×8.3×11.1in /
40×21.1×28.1cm

18.3×9.3×11.1 in /
46.4×23.5×28.3cm

18×9×11 in /
46.4×23.5×28.3 cm

25×11.2×16.4 in /
63.5×28.5×41.6 cm

Battery Chemistry

LFP

NCM

LFP

LFP

Cycle life

3000 cycles to 80+% capacity

800 cycles to 80% capacity

3000 cycles to 80+% capacity

3,500 cycles to 80% capacity, 6,500 cycles to 50% capacity

Applicable models

DELTA 2

DELTA 2, DELTA Max,
DELTA 2 Max

DELTA 2, DELTA Max,
DELTA 2 Max

DELTA Pro

EcoFlow DELTA 2
Extra Battery

799 $

EcoFlow DELTA Max
Extra Battery

1,199 $

1,599 $

Capacity

1024Wh

2016Wh

Weight

21lbs / 9.5kg

40lbs /18 kg

Size

15.7×8.3×11.1in /
40×21.1×28.1cm

18.3×9.3×11.1 in /
46.4×23.5×28.3cm

Battery Chemistry

LFP

NCM

Cycle life

3000 cycles to 80+% capacity

800 cycles to 80% capacity

Applicable models

DELTA 2

DELTA 2, DELTA Max,
DELTA 2 Max

EcoFlow DELTA 2 Max
Extra Battery

1,399 $

EcoFlow DELTA Pro
Extra Battery

1,999 $

2,799 $

Capacity

2048Wh

3600Wh

Weight

42lbs / 19kg

84lbs / 38kg

Size

18×9×11 in /
46.4×23.5×28.3 cm

25×11.2×16.4 in /
63.5×28.5×41.6 cm

Battery Chemistry

LFP

LFP

Cycle life

3000 cycles to 80+% capacity

3,500 cycles to 80% capacity, 6,500 cycles to 50% capacity

Applicable models

DELTA 2, DELTA Max,
DELTA 2 Max

DELTA Pro

Recommended Kits

EcoFlow DELTA 2 + EcoFlow DELTA 2 Extra Battery
2048Wh
$1,499
$1,798
Learn More
EcoFlow DELTA 2 Max + EcoFlow DELTA 2 Max Extra Battery
4096Wh
$2,999
$3,298
Learn More
EcoFlow DELTA Max (2000) + EcoFlow DELTA Max Extra Battery
4032Wh
$2,699
$3,698
Learn More
EcoFlow DELTA Pro + EcoFlow DELTA Pro Extra Battery
7200Wh
$4,899
$6,498
Learn More

Learn More About Extra Batteries

How to Upgrade Your EcoFlow Battery Capacity
How Long Does a Home Backup Battery Last?
How Much Does a Solar Battery Cost?
Nickel Cadmium (NiCd) vs. LiFePO4 (LFP) — Which Battery Is Better?
EcoFlow Home Battery Backup System Comparison
How to Charge a Lithium Ion (Li-Ion) Battery
The Complete Guide to Battery Management Systems for Portable Power Stations and Solar Generators
EcoFlow DELTA Series Comparison: Which Portable Power Station Should You Get?

EcoFlow Extra Battery FAQ

Q: How many extra batteries can I use with a portable power station?

Our portable power stations can use up to 2 extra batteries, see below for more information.

EcoFlow DELTA 2: 1 × Extra Battery
EcoFlow DELTA Max: 2 × Extra Battery
EcoFlow DELTA 2 Max: 2 × Extra Battery
EcoFlow DELTA Pro: 2 × Extra Battery

Q: Are different Extra Battery models compatible with other portable power stations?

Not all extra batteries are compatible with other portable power station models. See the compatibility table below for more information.

DELTA 2
(1024Wh)

DELTA Max 1600
(1612Wh)

DELTA Max 2000
(2016Wh)

DELTA 2 Max
(2048Wh)

DELTA Pro
(3600Wh)

DELTA 2 Extra Battery
(1024Wh)

DELTA Max Extra Battery
(2016Wh)

DELTA 2 Max Extra Battery
(2048Wh)

DELTA Pro Extra Battery
(3600Wh)

Q: Can I charge the Extra Battery independently of a portable power station?

You can use a Smart Generator to charge an Extra Battery without a portable power station. For other charging methods, you need to connect your Smart Extra Battery to a portable power station unit first.

Q: How fast does a Smart Extra Battery charge?

The charging speed varies depending on your chosen charge method. The fastest way to charge is by utilizing DELTA Pro's MultiCharge feature to reach an input of up to 6500W. With that, you can top up both your DELTA Pro and the Extra Battery in under 2 hours. If your DELTA Pro is already charged, an Extra Battery needs around 2.7 hours to charge using a standard AC wall outlet.

Q: What makes the Smart Extra Battery "Smart"?

A Smart Extra Battery can be monitored and controlled using the EcoFlow app.

The terms “DELTA” and “RIVER” as mentioned on this page refer to products exclusively manufactured by ECOFLOW INC.

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