EcoFlow STREAM Ultra X
Pre-Order (Available End of June)
Ready for true energy freedom? Power your home, reduce your bills, and take control with the STREAM Ultra X - a part of the EcoFlow STREAM plug-and-play solar system.
For safe, compliant and efficient operation, make sure to read and follow the important Safety and Legal Notice provided at the end of this page.
Key Features
- STREAM Ultra X: 3.84kWh battery
- Expandable capacity up to 11.52kWh
- 2,000W PV input (4 × 500W), with 4 MPPT controllers
- Max device power supported: 2,300W (10A)
- 1200W AC output
- Low-temperature self-heating below 5 deg C, ready for winter conditions
- Quiet operation (<30 dB) and IP65 weatherproofing for outdoor use
- 10-year warranty - designed to retain 70% of the original battery capacity after 6,000 full charge/discharge cycles
- Requires installation by a licensed electrician. Contact us today for a referral to a trusted installation partner.
Power Big. Power Small. Power It All.
Three smart setups to cover every need — all powered by the sun.
2300W Parallel ModeDevice Setup: 1 × STREAM Ultra X + 1 × STREAM Ultra or STREAM AC Pro (connected with parallel cable) Powers high-wattage appliances like ovens and dishwashers. Output: 1,200W + 1,100W = 2,300W total |
2000W Distributed ModeDevice Setup: 1 × STREAM Ultra X + 1 × STREAM Ultra or STREAM AC Pro (plugged into separate wall sockets) Solar powers up to 2,000W, with support for 2,300W when needed. Output: 1,200W + 800W + 300W = 2,300W total |
1200W Single Unit ModeDevice Setup: 1 × STREAM Ultra X Ideal for running everyday essentials like TVs, cookers, and fans. Output: 1,200W from a single battery |
Technical Specifications
| Capacity | 3.84kWh |
| Cycle Life | 6,000 cycles to 70% capacity |
| AC Charging Input | 1,200W |
| AC Output | 1,200W |
| MPPT | 4 |
| PV Input Power | 2,000W (500W × 4) |
| AC Output (Grid-Tied) | 800W |
| Max Device Power Supported | 2,300W (10A) |
| Battery Self-Heating | Activates at ≤5°C |
| Ingress Protection | IP65 (weatherproof) |
| Dimensions | 420mm x 294mm x 460mm |
| Weight | 38.8 kg |
| Operating Temperature | -20°C to 55°C |
| Connectivity | Wi-Fi / Bluetooth (EcoFlow App) |
| Noise Level | <30 dB |
| Warranty | 10 Years |
How to connect the STREAM Power Plant to the Home Electrical Wiring
To comply with UK wiring regulations, the BKW-AC cable (which connects the inverter output to the home 230V wiring) must be connected to a fused spur - the white box shown to the right of the sockets in the photo below. Inside this box, the cable should pass through a 13A fuse and switch before being connected to one of the home circuits. In the photo, it is connected to the same circuit that powers the adjacent socket, but the installation does not need to be next to a socket. A blank plate can also be used to replace an existing socket.
IMPORTANT SAFETY AND LEGAL NOTICE
Follow the safety and installation guidance provided in PAS 63100:2024 here when setting up this kit. Under new guidance, batteries must not be installed in residential spaces; they are best installed in non‑habitation spaces, outside or in an outbuilding meeting prescribed conditions.
Where multiple STREAM Units are used in one property, we recommend the cascaded configuration as described in the user manual. Although a distributed configuration is possible, it's the installer's responsibility to design and implement a system that complies with UK regulations, in particular the General Wiring Regulations. This typically disallows more than one input point per circuit. If in doubt, consult a qualified professional.