Smart Solar
EcoFlow STREAM Ultra
EcoFlow$1,399$1,899Save $500
In Stock
- Compact 255 × 284 mm footprint takes up 50% less space than comparable batteries
- Fanless design keeps operation whisper-quiet below 30 dB for any room
- LFP chemistry retains 70% capacity after 6,000 deep cycles for long-term reliability
- NEMA 4 rating handles rain and dust for reliable outdoor placement
The Simple Summary
Smart plug-in solar that's sleekly packaged and easily expandable. The AI-powered app makes control a snap.
EcoFlow STREAM Ultra Details
The EcoFlow STREAM Ultra is a plug-in solar system designed to help homeowners and renters maximize savings on electricity bills. As part of EcoFlow's standard-tier lineup of complete systems, it plugs into a standard wall outlet, offering a simpler alternative to traditional rooftop solar installations. This all-in-one unit combines a 6 kWh battery with solar and AC power management in a single compact system. It accepts up to 2,000W of solar input and delivers up to 1,200W of AC output, giving it enough capacity to meaningfully offset daily electricity use for many households. The EcoFlow STREAM Ultra is certified to UL 1741 standards, supporting safe integration with home electrical systems. Its flexible design allows for multiple installation options, including ground stand, flat roof, or fence mount setups, making it adaptable to a variety of properties and spaces. Whether you're a homeowner looking to reduce reliance on grid power or a renter seeking a lower-commitment solar solution, the EcoFlow STREAM Ultra offers a straightforward path to savings. Its plug-in design minimizes installation complexity, while its solar input and battery capacity make it a practical choice for everyday energy needs. For those focused on maximizing savings without the cost and complexity of a full rooftop solar installation, the EcoFlow STREAM Ultra provides a flexible, code-compliant option worth considering.
Our Take
Why we like it
- Compact footprint saves half the space of competing solar batteries
- LFP chemistry and 6,000-cycle life mean less frequent replacement over 10 years
- Fanless, whisper-quiet operation won't disturb neighbors or family indoors
- NEMA 4 weatherproofing lets you place it outside year-round, even in rain
What to watch
- 23.1 kg weight per unit requires physical strength or help to move and install
- Wi-Fi connectivity (2.4 GHz only) may struggle in homes with poor signal or 5 GHz-only networks
- 10-year warranty period not explicitly verified on the official US product page itself
Good fit if
Compact yards or patios with limited installation spaceProperties where quiet operation matters (residential areas, offices)Climates with frequent rain or dust exposureHouseholds aiming to cover 30–50% of annual energy needs
Think twice if
Renters or temporary installations requiring quick, tool-free removalOff-grid setups needing continuous AC power above 1,200WHomes without reliable 2.4 GHz Wi-Fi for app features and automationsTight budgets; Premium entry cost limits affordability for some buyers
Technical Specifications
2000W
Solar Input
1200W
AC Output
1.92 kWh
Battery Capacity
| Battery & Chemistry | |
|---|---|
| Battery Capacity | 6 kWh |
| Cell Chemistry | LFP (LiFePO₄) |
| Cycle Life | Retains 70% capacity after 6,000 deep cycles |
| Operating Temperature Range | Automatic heating activates below 0°C; operates smoothly to −20°C |
| Solar & Power Output | |
|---|---|
| Solar (PV) Input | 2,000W total with 4-MPPT design (500W per port); 15–60V operating voltage, ≤14A per port |
| AC Output | Up to 1,200W on-grid |
| AC Outlets | Dual NEMA 5-15/NEMA 5-20 outlets; plugs directly into standard wall sockets |
| Annual Generation Estimate | Up to 6,424 kWh annually; covers up to 50% of household needs, saving up to $1,027/year |
| Dimensions & Weight | |
|---|---|
| Dimensions (per unit) | 255 × 284 × 458 mm (10.0 × 11.2 × 18.0 in) |
| Footprint | 255 × 284 mm; 50% smaller than other solar batteries; supports horizontal and vertical stacking |
| Net Weight (per unit) | 23.1 ± 0.5 kg |
| Design & Operation | |
|---|---|
| Cooling | Fanless thermal design; heat dissipated through integrated heat dissipation module |
| Noise Level | Below 30 dB |
| Weather Resistance | NEMA 4 rating — resistant to rain and dust |
| Connectivity | |
|---|---|
| Communication | Wi-Fi (2.4 GHz) and EcoFlow app for full features; Bluetooth/LAN-only limits app automations |
| Product Overview | |
|---|---|
| Best For | Maximizing control & savings |
| Certification | UL 1741 |
| Warranty | 10 years |
What's in the Box
- 1× EcoFlow STREAM Ultra battery unit
- Solar panel extension cable (2.95 m)
- AC cable (2 m)
- PV wrench, mounting bracket, and locking bracket
- Screws and expansion anchors
