EcoFlow STREAM Ultra X Inverter (Battery)

The EcoFlow STREAM Ultra X is a powerful battery-integrated inverter for home solar systems, transforming a balcony power station into a fully-fledged energy hub for a house or flat. The model combines a battery, inverter, MPPT controllers and smart management in a single unit.

The main advantage of the STREAM Ultra X is its increased capacity of 3.84 kWh. This energy reserve provides greater freedom in everyday use: solar generation is not limited to daytime consumption but can be stored for the evening, morning or periods of high demand.

The device supports direct connection of solar panels with a total capacity of up to 2000 W. For this purpose, it features 4 independent MPPT trackers, each rated at 500 W. This architecture is particularly useful if the panels are oriented in different directions or if some of the modules are periodically shaded.

The STREAM Ultra X operates on a 230 V domestic mains supply and can feed up to 800 W into the home’s electrical network. Up to 1200 W is available via the AC sockets, and when using a parallel connection, the system can support a load of up to 2300 W. This opens up more scenarios for powering household appliances within the system’s capabilities.

The battery is based on LiFePO4 / LFP technology and is rated for 6,000 cycles to 70% of its remaining capacity. This makes the STREAM Ultra X not just a short-term accessory, but a long-term part of your home energy system for everyday use.

The system supports Wi-Fi and Bluetooth, and is controlled via the EcoFlow App. In the app, you can monitor the charge level, solar energy generation, consumption, and the operation of connected devices, as well as configure the logic for using stored energy.

The STREAM Ultra X can be used on its own or expanded with other devices from the EcoFlow STREAM series. The documentation states support for up to 6 STREAM devices in the system, allowing you to increase the total capacity and flexibly place the storage units in different areas of the home. :contentReference[oaicite:2]{index=2}

The housing has an IP65 protection rating, and cooling is achieved via natural convection without fans. As a result, the device operates quietly, requires no active cooling, and is suitable for placement on a balcony, terrace, in a utility area, or in a room with adequate ventilation.

The storage unit measures 420×294×460 mm and weighs 38.8 kg. The housing design is suitable for both fixed and mobile installation, and a foldable handle helps to move the device more safely during installation or maintenance.

The EcoFlow STREAM Ultra X is ideal for those who want a larger energy reserve than the 1.92 kWh versions offer, whilst maintaining a simple connection to their home solar system. This is a solution for households where it is not only important to save energy during the day, but also to have access to their own stored energy when the sun is no longer generating enough power.