ECOFLOW STREAM Ultra X 3.84kWh energy storage

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  • Code: INN_55353
  • Manufacturer: ECOFLOW
  • Availability: 1 working day
  • 1,553.41 EUR
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EcoFlow STREAM Ultra X Microinverter Energy Storage (3.84kWh)

EcoFlow STREAM Ultra X is an advanced energy storage device with a capacity of 3.84 kWh and a built-in microinverter. Combined with photovoltaic panels, it allows you to maximize the use of solar-generated electricity and helps you save on your bills. It has four MPPT inputs with a total power of 2000 W and can support equipment up to 2300 W. It is also very easy to install. As part of the STREAM ecosystem, the device first supplies the home with energy from the PV modules, then draws electricity stored in the battery, and only then from the grid. This means greater independence and complete energy security – even in emergency situations.

Family playing in the living room, next to an energy storage unit plugged into a wall socket

Powerful 2300 W

EcoFlow STREAM Ultra X allows you to power devices with up to 2300W in two ways. With a single unit, the system combines solar energy (up to 1200W) with grid power (up to 1100W) to fully cover your needs – ideal for everyday powering of energy-hungry appliances without overloading your system. However, if you connect two units in parallel, you can achieve 2300W of output power entirely from solar energy, reducing grid consumption to zero and maximizing self-consumption.

Two energy storage units with visible batteries and power markings

Scalable up to 23 kWh – a solution for years to come

The base capacity of 3.84 kWh is enough to power essential devices after dark or during an outage. However, if you need more capacity, you can expand the system to up to six units, providing 23 kWh of energy. It's a flexible solution that grows with your needs – from a small backup to a complete system to power your entire home.

Six energy storage units arranged in three columns of two on a brown gradient background

Maximum solar utilization – 4 MPPT and 2000W PV input

STREAM Ultra X has four MPPT inputs and supports solar panel input power of up to 2000W (4 x 500W). Furthermore, thanks to advanced low-light technology, the battery stores energy even in low light conditions. This allows for up to an hour of additional production per day, even in cloudy weather and at dawn. More energy during the day means less grid consumption and a faster return on investment!

Modern terrace with solar panels, balustrade and energy storage at the wall

Whole-Home Solar Network

EcoFlow STREAM Ultra X allows you to create a decentralized solar network. Simply plug the units into outlets in different locations—one can be near the PV panels, and others near high-drain devices. STREAM automatically connects all modules into one intelligent system and distributes energy where it's needed most—the kitchen, laundry room, or living room—without the need for manual configuration.

Two silver energy storage units plugged into a socket next to the washing machine in the utility room

Intelligent management and automation

With the EcoFlow app and OASIS, you have full control over your energy consumption in real time – from viewing flows to setting priorities and schedules. AI Mode analyzes weather forecasts, dynamic tariffs, and your consumption profile, automatically charging your battery during low-cost hours and discharging it when energy is most expensive. You can also create your own automation rules and smart home scenarios, for example, to trigger charging for your electric car when PV production is highest. Note: Some EcoFlow app features require a premium subscription.

Smartphone with energy management app next to vertically arranged energy storage units with visible batteries

Integration with a smart home

STREAM Ultra X works with smart meters and EcoFlow sockets, communicating even offline. The system automatically adjusts the power fed into the home grid and prevents energy waste. Furthermore, thanks to compatibility with popular protocols (Shelly, Matter, Tibber), you gain complete control over your entire home from a single app.

Energy storage unit plugged into a socket in a room with a washing machine and a potted plant

Safety and reliability for years

LFP cells provide approximately 6,000 charging cycles while maintaining 70% capacity, which translates to up to 15 years of trouble-free use. The device's housing is fireproof, and a multi-level security system protects against overload and overheating, among other things. A rapid voltage drop (in <0.7 s) guarantees installation safety, and global certifications (ISO, TRUSTe, NIST) confirm compliance with the highest privacy and data protection standards.

Three silver energy storage units placed side by side on the floor against a brown wall

Weatherproof

The IP65 rating protects the device from rain and dust, while the self-heating function allows for trouble-free operation in temperatures as low as -20°C. This means the STREAM Ultra X can be installed both indoors and outdoors. It will operate reliably all year round!

Cross-section of the upper part of the energy storage unit with visible batteries on a black background

Quiet operation and well-thought-out design

A noise level of less than 30 dB ensures the device won't disrupt your daily life. You can easily place it in your living room or bedroom! Furthermore, its housing is made of materials with a reduced carbon footprint, making it environmentally friendly. Furthermore, it features quick plug-and-play installation and interchangeable front panels available in two colors (natural wood and elegant black), which allow you to match the energy storage unit to your interior design.

Energy storage unit with a wooden finish standing against a wall in a bright interior with a view of the living room

Included

  • EcoFlow STREAM Ultra X Energy Storage
  • Extension Cable for Photovoltaic Panels (2.95 m) x8
  • STREAM AC Cable (1.5 m)
  • PV Key
  • Mounting Bracket
  • Locking Bracket
  • Safety Instructions
  • Installation Instructions
  • Warranty Card

General

ProducentEcoFlow
NazwaSTREAM Ultra X
ModelEFSTREAMULTRAX800W
Waga38,8 kg
Wymiary420 × 294 × 460 mm

 

Akumulator

Battery capacity3.84 kWh
Battery life6000 cycles / 70% SOH
Battery type200 Ah lithium-ion (100 Ah 6S2P)
Nominal battery voltage19.2 V
Charging voltage range13.8-21.9 V (lower limit 2.3 V, upper limit 3.65 V per cell)
Discharge voltage range15-21.9 V (lower limit 2.5 V, upper limit 3.65 V per cell)
Max. charge/discharge current80 A
Max. charging power≥1500 W
Max. discharge power1200 W

 

Parametry fotowoltaiczne

MPPT4
Maks. moc wejściowa na kanał500 W
Maks. moc wejściowa PV2000 W
Maks. napięcie wejściowe PV60 Vdc
Zakres napięcia MPPT15-60 Vdc

 

Parametry on-grid

On-grid output power800 W
Max. on-grid output current2.61 A / 3.48 A / 5.22 A
Max. bypass input current10 A
Rated voltage220/230/240 V~
Voltage range180-270 Vac
Frequency range45-55 Hz

Off-grid parameters

Rated Apparent Power1200 VA
Max. Apparent Power1200 VA
Rated Output Current5.22 A
Max. Output Current5.22 A
Rated Output Voltage230 Vac
Rated Output Frequency50/60 Hz
Output Frequency Range45-55 Hz

Bypass parameters

Max. Bypass Output Power2300 W (10 A)

Performance

Maximum Efficiency93%
MPPT Conversion Efficiency96%
MPPT Tracking Efficiency99.8%

Basic parameters

Operating Temperature Range-20°C to 55°C
Storage Temperature Range-20°C to 55°C
Battery Warmer FunctionWhen charging at temperatures below 5°C
Operating Humidity5-95%
Max. altitude above sea level4000 m
Monitoring methodWi-Fi / Bluetooth
Noise level<30 dB
Power consumption in standby mode<5 W
Tightness classIP65 (IP54 with Schuko socket)

Product safety information Manufacturer information



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