EcoFlow STREAM extension battery
EcoFlow STREAM Extension Battery 5 kWh – Product View 02
EcoFlow STREAM Extension Battery 5 kWh – Product View 03
EcoFlow STREAM Extension Battery 5 kWh – Product View 04
EcoFlow STREAM Extension Battery 5 kWh – Product View 05
EcoFlow STREAM 5000 – Product View 03
EcoFlow STREAM 5000 – Product View 04
EcoFlow STREAM 5000 – Product View 02
EcoFlow STREAM Series Solar Battery STREAM 5000 – Product View 11
EcoFlow STREAM Series Solar Battery STREAM 5000 – Product View 12
    EcoFlow STREAM extension battery
    EcoFlow STREAM Extension Battery 5 kWh – Product View 02
    EcoFlow STREAM Extension Battery 5 kWh – Product View 03
    EcoFlow STREAM Extension Battery 5 kWh – Product View 04
    EcoFlow STREAM Extension Battery 5 kWh – Product View 05
    EcoFlow STREAM 5000 – Product View 03
    EcoFlow STREAM 5000 – Product View 04
    EcoFlow STREAM 5000 – Product View 02
    EcoFlow STREAM Series Solar Battery STREAM 5000 – Product View 11
    EcoFlow STREAM Series Solar Battery STREAM 5000 – Product View 12

    EcoFlow STREAM extension battery 5 kWh

    €999,00
    €1.699,00
    Preorder Preorder
    Delivery: from 03.07.2026
    0% VAT in Germany. Free Shipping. Plus VAT according to other tax zone.

    In stock

    More discount For pre-orders!
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    Data sheets & certificates

    Size

    EcoFlow STREAM extension battery
    Dimensions: 295 × 519 × 267 mm

    Shipping

    Free and fast delivery in Germany. Estimated delivery time 2 - 3 working days from October 03.07.2026, XNUMX. 

    Shipping costs 49EUR and delivery time 2-8 working days to Austria (Shipping costs 69EUR and 2-10 working days for other countries in the EU; Not available for delivery to non-EU countries).

    30-day return guarantee.

    For more information please visit our Delivery and shipping conditions.

    • 5,02 kWh additional storage capacity

    • Expandable up to 15 kWh per main unit

    • Seamless stack installation in the EcoFlow STREAM system

    • 10.000 charging cycles & IP65 protection class

    Secure payment

    We secure them.

    Fast delivery

    Free in Germany.

    30 Day Returns

    Return is possible.

    EcoFlow STREAM Extension Battery Description

    The EcoFlow STREAM extension battery 5 kWh is the appropriate one Extension battery for the EcoFlow STREAM energy system and enables flexible expansion of the existing storage capacity. With 5,02 kWh With its additional capacity, it reliably stores excess solar energy for later use, helping to further increase self-consumption and reduce dependence on the public power grid. The expansion battery is stacked directly onto compatible STREAM main units, expanding the existing system without complex installations.

     

    Product features:

    • --5,02 kWh additional storage capacity: The EcoFlow STREAM 5 kWh expansion battery adds 5.024 Wh of additional storage capacity to compatible STREAM systems, providing more energy for evening hours, high loads or days with little sunshine.
    • --Flexible expansion up to 15 kWh per main unit: An EcoFlow STREAM 5000 or EcoFlow STREAM AC 5000 can be combined with up to two expansion batteries. This increases the storage capacity of a main unit to up to 15 kWh.
    • --Scalable EcoFlow STREAM System: Within a STREAM system, up to six main units can be combined and expanded to a maximum total storage capacity of 90 kWh – ideal for increasing energy demand.
    • --Easy batch installation: The expansion battery is placed directly onto compatible STREAM main units and connected via the integrated parallel connectors. No additional wiring or complex installations are required.
    • --Seamless integration into the EcoFlow STREAM system: The extension battery works fully with the intelligent OASIS 3.0 energy platform and supports features such as Intelligent Mode, Peak Shaving, self-consumption optimization and control via the EcoFlow app.
    • --Self-heating battery technology: The integrated self-heating system activates automatically at low temperatures and ensures reliable charging performance even in cold weather.
    • --Quiet and robust operation: With an operating noise level of less than 20 dB, the expansion battery operates almost silently. The IP65-rated housing is suitable for long-term use indoors and in protected outdoor areas.
    • --Durable and future-proof: Up to 10.000 charging cycles and a 10-year manufacturer's warranty ensure a long service life and make the EcoFlow STREAM 5 kWh extension battery a reliable addition to modern home energy systems.

    The EcoFlow STREAM extension battery 5 kWh This is the ideal addition for all EcoFlow STREAM system owners who want to flexibly expand their storage capacity. Thanks to its modular design, intelligent system integration, and durable battery technology, the energy system easily grows with the household's needs and enables even more efficient use of self-generated solar energy.


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    EcoFlow STREAM Extension Battery Datasheet

    EcoFlow_STREAM_Battery_5_kWh
    GENERAL

    capacity
    Charging cycles
    Maximum charging power of the battery system
    Maximum discharge power of the battery system
    Operating temperature


    5.024 Wh
    10.000

    1.800 W

    1.800 W
    −20 °C to 55 °C
    SAFETY

    Protection class
    Dimensions (W × H × D)
    Operating noise
    Guarantee


    IP65K
    295 × 519 × 267 mm
    <20 dB
    10 years

    EcoFlow STREAM Battery Q&A

    Q&A about the EcoFlow STREAM battery

    Which devices are compatible with the EcoFlow STREAM 5 kWh extension battery?

    The EcoFlow STREAM 5 kWh expansion battery is compatible with the EcoFlow STREAM 5000 and the EcoFlow STREAM AC 5000 and was specifically developed to expand these systems.

    How much can I expand my storage system?

    A STREAM 5000 or STREAM AC 5000 can be combined with up to two expansion batteries, achieving a total capacity of up to 15 kWh. Within an EcoFlow STREAM system, up to six main units can be combined for a maximum total capacity of 90 kWh.

    How is the extension battery installed?

    The EcoFlow STREAM 5 kWh expansion battery is stacked directly onto the compatible main unit and connected via the integrated parallel terminals. This allows for quick installation without the need for complex additional wiring.

    Does the extension battery support intelligent energy management functions?

    Yes. In combination with an EcoFlow STREAM 5000 or STREAM AC 5000, the extension battery utilizes all the functions of the OASIS 3.0 energy platform, including Intelligent Mode, Peak Shaving, self-consumption optimization, and control via the EcoFlow app.

    Is the EcoFlow STREAM extension battery suitable for outdoor use?

    Yes. Thanks to its IP65 protection rating, the extension battery is protected against dust and water jets. Additionally, the integrated self-heating function ensures reliable charging performance at low temperatures.

    Is the extension battery noisy during operation?

    No. With an operating noise of less than 20 dB, the EcoFlow STREAM 5 kWh extension battery operates almost silently and is ideally suited for utility or technical rooms.

    How long does the EcoFlow STREAM 5 kWh extension battery last?

    The extension battery is designed for up to 10.000 charging cycles and comes with a 10-year manufacturer's warranty. This makes it suitable for long-term daily use in modern home energy systems.
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