The STREAM Ultra It combines high storage capacity with flexibility, weatherproof construction and intelligent control - ideal if you want to reduce dependence on the power grid while maximizing your own consumption.

Large storage capacity & lifespan
The integrated LiFePO₄ battery has a capacity of 3.84 kWh, about twice as much as its predecessor “Ultra”.
The battery is designed for around 6000 charging cycles up to 70% remaining capacity.
The operating time can be extended modularly up to ≈ 23 kWh through additional battery modules or by connecting additional units in parallel.

Strong PV input & power output
There are 4 MPPT inputs available, up to 500 W each, for a total of up to 2000 W solar input. This allows solar energy to be absorbed very efficiently, even in partial shade or low light.
The AC output has a maximum output of 1200 W, and under certain conditions (parallel connection) up to approx. 2300 W to cover high peak loads.
The AC charging input (e.g. from the mains) can also charge with up to 1200 W.

Robustness, weather resistance & operation at low temperatures
Protection class IP65, i.e. dust and splashproof - also suitable for outdoor areas such as balconies or roofs.
Functions even at low temperatures: The battery has a self-heating function so that it can be operated at temperatures from around -20 °C.
Low noise (< 30 dB) – also fits well in living environments.

Smart management & integration
Control via app (WiFi / Bluetooth), with monitoring of performance, charging status, PV input and graphical display.
Intelligent functions such as weather forecasts or dynamic tariffs can be used, for example. B. to recharge cheaply at night or to make optimal use of solar energy.
Compatibility with other devices and standards (e.g. EcoFlow Smart Meter, Shelly 3EM, ...) and expandability via parallel connection.

Design & Installation
Despite the significantly higher capacity, the device is still relatively compact: dimensions approximately 420 × 294 × 460 mm, weight approximately 38.8 kg.
Easy installation – plug & play, no extensive electrical work required.