Description
The EcoFlow STREAM Ultra X is an all-in-one home energy storage and inverter system designed for households seeking to maximise use of their own solar production, reduce dependence on the grid and increase self-consumption. It combines a built-in hybrid inverter and Li-ion battery into a single plug-in solution that can be installed without major rewiring. With a capacity of 3.84 kWh and high solar input support, it enables surplus solar energy to be stored and deferred for use when needed. The IP65-rated enclosure allows indoor or outdoor installation, and low-temperature self-heating ensures reliable performance even in colder climates. The Ultra X is part of the STREAM series, but distinguishes itself with roughly double the storage of its predecessor, while still supporting expansion up to approximately 23 kWh via additional units or batteries. It integrates seamlessly into the EcoFlow app ecosystem, allowing monitoring, scheduling (e.g., time-of-use optimisation) and remote control of home energy flows.
Technical specifications
Here is a summary of key specifications for the EcoFlow STREAM Ultra X:
| Specification | Value |
|---|---|
| Battery capacity (nominal) | 3.84 kWh |
| Cycle life | 6 000 cycles to 70% capacity |
| AC charging input | 1 200 W |
| AC output (single unit) | 1 200 W |
| MPPT charge channels | 4 |
| PV input power | 2 000 W (4 × 500 W) |
| PV input voltage (max) | 60 V DC |
| Max device power supported | ~2 300 W (10 A) |
| Operating temperature range | -20 °C to +55 °C |
| Self-heating (low temp) | ≤5 °C activation threshold |
| Wireless connectivity | Wi-Fi / Bluetooth |
| Ingress protection rating | IP65 |
| Net weight | 38.8 kg |
| Dimensions | 420 mm × 294 mm × 460 mm |
| Acoustic noise level | < 30 dB |
| Warranty | 10 years |
