Energy storage – ECOFLOW – Stream Ultra – 2 kWh
Product details
EcoFlow STREAM Ultra Smart Energy Storage with 2-in-1 Microinverter
EcoFlow STREAM Ultra is a modern energy storage system with an integrated inverter that turns a solar PV installation into an intelligent, fully automated home power source. This 2-in-1 solution (smart energy storage with an integrated microinverter) has a nominal capacity of 1.92 kWh and not only stores energy but also manages it autonomously, ensuring continuous power and real savings. It operates quietly and requires no fan cooling.
Key features of the EcoFlow STREAM Ultra:
- Integrated 2-in-1 design: a smart energy storage system with an integrated microinverter.
- Capacity and durability: nominal capacity of 1.92 kWh using a modern LFP (lithium iron phosphate) battery. It guarantees over 6,000 charge cycles, ensuring long service life.
- Maximum PV utilization: equipped with four independent MPPT inputs, each supporting up to 500 W, for a total maximum input power of 2,000 W. Input voltage range is 15 V–60 V.
- Flexible power modes: by default it supplies 800 W nominal power to the grid (AC Grid Terminal). In device power mode (AC Output) it can deliver up to 1,200 W. When connected in parallel, the maximum output power is 2,300 W.
- Weather resistance: IP65 ingress protection provides full protection against dust and water, allowing installation indoors, in a garage, or outdoors.
- Wide operating range: operates reliably in temperatures from -20°C to 55°C and at altitudes up to 4,000 m above sea level.
- Compact dimensions: measures 255 × 284 × 458 mm (HWD) and weighs 23.1 kg.
- Management: the system can be managed in real time via built-in Bluetooth and Wi‑Fi connectivity and the EcoFlow app, which allows remote optimization of settings and monitoring of parameters.
Who is this a good choice for?
The EcoFlow STREAM Ultra is an excellent choice for homeowners with a solar PV installation who are looking for an automated system to store and manage energy, achieve real savings, and maintain continuous power. It is suitable for both small and larger PV systems. With its robust IP65-rated construction and wide operating temperature range (from -20°C to 55°C), it’s an ideal solution for users who need reliability regardless of location or weather conditions.
| Parameter | EcoFlow STREAM Ultra |
|---|---|
| General | |
| Manufacturer | EcoFlow |
| Model | STREAM Ultra |
| Topology | Isolated |
| Ingress protection rating (IP) | IP65 |
| Pollution degree | PD3 |
| Overvoltage category (OVC) | DC: II, AC: III |
| Application | Outdoor / indoor |
| Cooling method | Natural convection (fanless) |
| Dimensions (mm) | 255 × 284 × 458 |
| Weight | 23.1 kg |
| Battery | |
| Rated capacity | 1.92 kWh |
| Rated voltage | 19.2 V |
| Cycle life | 6000+ |
| Cell type | LFP (Lithium Iron Phosphate) |
| PV / MPPT Input | |
| Number of MPPTs | 4 |
| MPPT voltage range | 15 V–60 V |
| Max. input power (PV) | 2000 W (500 W per MPPT) |
| Max. input voltage (PV) | 60 V |
| Max. input current (PV) | 14 A |
| Max. input short-circuit current (PV) | 20 A |
| AC Grid Output (Grid Terminal) | |
| Voltage and frequency | 230 V~, 50 Hz |
| Rated power | 800 W |
| Rated current | 3.48 A |
| Max. input current | 10 A |
| Max. input power | 2300 W |
| Power factor | 1 (0.8 to -0.8) |
| AC Output | |
| Voltage and frequency | 230 V~, 50 Hz |
| Max. output power | 1200 W |
| Rated output current | 5.22 A |
| Max. output current (bypass mode) | 10 A |
| Max. input power | 800 W |
| Max. input current | 3.48 A |
| Power factor | 1 (0.8 to -0.8) |
| Parallel AC Output (Parallel Terminal) | |
| Voltage and frequency | 230 V~, 50 Hz |
| Max. output power | 2300 W |
| Max. output current | 10 A |
| Max. input current | 10 A |
| Max. input power | 2300 W |
| Power factor | 1 (0.8 to -0.8) |
| Environmental conditions | |
| Operating altitude | ≤ 4000 m above sea level |
| Operating temperature | -20°C to 55°C |
| Storage temperature | -20°C to 55°C |
| Relative humidity | 5%–95% |
| Connectivity and management | |
| Connectivity | WLAN, Bluetooth |
| Management | EcoFlow app |
All specifications and descriptions may differ from the actual product specifications. EcoFlow reserves the right to make changes and improvements to the product shown and described here at any time without prior notice.

