EcoFlow STREAM Ultra X Energy Storage
EcoFlow STREAM Ultra X Energy Storage
EcoFlow STREAM Ultra X Energy Storage
EcoFlow STREAM Ultra X Energy Storage
EcoFlow STREAM Ultra X Energy Storage
EcoFlow STREAM Ultra X Energy Storage
EcoFlow STREAM Ultra X Energy Storage
EcoFlow STREAM Ultra X Energy Storage

EcoFlow STREAM Ultra X Energy Storage

€1.099,00
Delivery time: 2 - 3 working days
0% VAT in Germany. Free Shipping. including VAT according to other tax zone at checkout.

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  • Large storage capacity

  • 2300 W peak power

  • Four MPPT inputs

  • AI-supported energy optimization

Associated Products

Size

EcoFlow STREAM Ultra X

Weight: about 38,8 kg
Dimensions: 420 × 294 × 460 mm
Protection class: IP65

Shipping

Free and fast delivery in Germany. Estimated delivery time 2 - 3 working days.

Shipping costs 49,00 EUR and delivery time 2-8 working days to Austria (Shipping costs 149,00 EUR and 2-10 working days for other countries in the EU; Not available for delivery to non-EU countries).

Free 30-day returns.

For more information please visit our Delivery and shipping conditions.

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EcoFlow STREAM Ultra X Description

The EcoFlow STREAM Ultra X The STREAM Ultra X is a high-performance, AC-coupled energy storage system for balcony power plants and small solar installations. With a storage capacity of 3,84 kWh, four MPPT inputs, and a weatherproof IP65 housing, it offers a flexible, efficient, and easy-to-install solution for self-consumption of solar power. Thanks to its plug-and-play design, intelligent control, and optional expansion up to 23 kWh, the STREAM Ultra X is perfect for households looking to increase their energy independence and reduce grid electricity costs.

 

Delivery

1× EcoFlow STREAM Ultra X Energy Storage

1× AC connection cable for 230V socket
8× MC4 connection cables (3 m) for solar panel




Product features:

  • --Large storage capacity: With 3,84 kWh, the STREAM Ultra X offers significantly more capacity than many conventional balcony solutions – ideal for increasing self-consumption.
  • --Expandable from 3,84 kWh to 23 kWh: The storage system can be flexibly scaled and stores excess solar energy during the day to reliably provide it at night.
    --Two scaling options: Two STREAM Ultra X units or a combination with up to four STREAM additional batteries enable flexible system expansion for different energy requirements.
  • --2300 W power for peak loads: By operating two STREAM devices in parallel, the output power can be increased to up to 2,300 W – enough to fully power high-performance devices with solar power.
  • --Four MPPT inputs & 2000 W PV power: Four independent MPPT channels maximize energy yield even in partial shading or irregular sunlight.
  • --Full solar power despite clouds: The advanced low-light technology enables energy harvesting even at dusk or in cloudy conditions – up to one hour more solar yield per day.
  • --Simple plug-and-play installation: Thanks to AC coupling, the storage system can be integrated quickly and without complex modifications.
  • --Weatherproof IP65 housing: Dust and splash water resistant for use under balconies, canopies or in sheltered outdoor areas.
  • --Reliable security: Multi-stage hardware and software protection ensures safe operation and protection against overload, overheating and short circuits.
  • --AI-supported energy optimization: The EcoFlow OASIS system analyzes consumption, tariffs and weather forecasts and increases efficiency through intelligent control.
  • --AI mode for dynamic tariffs: It automatically optimizes the charging time during off-peak hours, thus increasing annual savings by up to 29%.

 

The EcoFlow STREAM Ultra X It combines a long-lasting LiFePO₄ battery, an integrated hybrid inverter, and four MPPT inputs in a single compact device. This combination ensures maximum energy efficiency, flexible use, and easy integration into existing systems – ideal for retrofits or new installations.

With its high cycle stability, intelligent control via the EcoFlow OASIS app and weatherproof construction, the STREAM Ultra X A future-proof, expandable solution for sustainable energy supply. This ensures that solar power is not only used efficiently, but also becomes an integral part of an independent, smart household.

High-performance AC-coupled energy storage system

The EcoFlow STREAM Ultra X is a modern energy storage system with a 3,84 kWh capacity, four MPPT inputs, and a weatherproof IP65 housing. It was specifically designed for balcony power plants and smaller solar systems to efficiently store solar power and make it available around the clock.
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Maximum flexibility for your everyday life

With the STREAM Ultra X, you benefit from a modular solution that grows with your energy needs. Whether as a standalone storage unit or in parallel operation with AC Pro expansion batteries – you design your system to suit your household.

Four independent MPPTs optimize PV yield, while low-light technology provides additional energy even at dusk. The intelligent BMS ensures maximum operational reliability and extends the lifespan of the LiFePO₄ battery.
  • Plug-and-play installation without technical knowledge

  • Weatherproof IP65 design for balcony & outdoor areas

  • Real-time app monitoring with AI analysis

EcoFlow STREAM Ultra X

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EcoFlow STREAM balcony power plant video

Plug & Play & quick retrofit

Thanks to AC coupling, the storage system can be integrated without complex modifications. Existing balcony power plants remain untouched; installation is completed in just a few steps and can be expanded at any time with additional STREAM units or AC Pro add-on batteries.
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Ready for any weather

The IP65-certified housing provides reliable protection against dust and rain. This allows the STREAM Ultra X to be operated under a balcony, on a porch roof, or in a sheltered outdoor area – reliably year-round, even with fluctuating temperatures and high humidity.

EcoFlow STREAM Ultra X Datasheet

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GENERAL

Dimensions: 
Capacity:
input power:
Charging temperature:

Discharge temperature:
Wireless connection:


420x294x460mm
3,84 kWh
AC: 1200 W
Low-temperature charging activation at ≤5 °C
-20 ° C to 55 ° C
Wi-Fi / Bluetooth
SAFETY

Water resistance:
MPPT:
Certificate:

Protocols/Integration:




IP65
4 inputs
CE / RoHS / UKCA (depending on market)
EcoFlow OASIS App, Smart Home compatibility (Tibber, Shelly)

EcoFlow STREAM Ultra X Q&A

Q&A about the EcoFlow STREAM Ultra X

What is the EcoFlow STREAM Ultra X?

The EcoFlow STREAM Ultra X is an AC-coupled energy storage system with an integrated inverter, designed for balcony power plants and small solar systems to efficiently store and use solar energy.

Can I install the EcoFlow STREAM Ultra X myself?

Yes. The EcoFlow STREAM Ultra X is designed as a plug-and-play system and can be easily connected without any specialist knowledge.

Is the EcoFlow STREAM Ultra X weatherproof?

Yes. Thanks to its IP65 protection rating, the EcoFlow STREAM Ultra X is protected against dust and rain and is ideal for balconies, terraces or canopies.

How can I expand the storage capacity of the EcoFlow STREAM Ultra X?

You can combine the EcoFlow STREAM Ultra X with a second Ultra X or up to four EcoFlow AC Pro additional batteries to increase the total capacity to up to 23 kWh.

What is the maximum power output of the EcoFlow STREAM Ultra X?

In parallel operation, the EcoFlow STREAM Ultra X achieves an output power of up to 2,300 W, sufficient for high-performance household appliances.

What battery technology does the EcoFlow STREAM Ultra X use?

The EcoFlow STREAM Ultra X uses a long-lasting LiFePO₄ battery that achieves over 6,000 charging cycles at 70% capacity.

Does the EcoFlow STREAM Ultra X also work under cloudy skies?

Yes. The EcoFlow STREAM Ultra X uses advanced low-light technology to generate electricity even in low sunlight conditions.

Can I control the EcoFlow STREAM Ultra X via an app?

Yes. The EcoFlow OASIS app allows you to monitor energy flows in real time, control charging times, and activate AI mode for dynamic electricity tariffs.
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