EcoFlow STREAM Ultra

The EcoFlow STREAM Ultra is a modular energy storage battery for residential use, with plug-and-play installation that needs no electrician. It stores 1.92 kWh per unit, connects directly to solar panels and compatible microinverters, and feeds energy into the grid through a domestic socket. It is aimed at anyone who wants to raise self-consumption and keep equipment running during a grid outage.

Why this product

• Expandable capacity — 1.92 kWh per unit, up to 11.52 kWh with 6 units in parallel.
• Four independent MPPTs — connect up to four panel strings with different orientations and shading levels.
• Microinverter input — accepts alternating current from compatible microinverters, combining converted solar energy with stored energy.
• Power during a grid outage — two AC outlets supply critical equipment, with up to 2 300 W in bypass mode.
• LiFePO₄ battery — keeps 70 % of its capacity after 6 000 cycles, with a 10-year warranty.
• IP65 rating and self-heating — operates from −20 °C to 55 °C and enables low-temperature charging (≤ 5 °C).
• EcoFlow app management — location-based solar forecasts, time-of-use charging schedules and real-time diagnostics.

Specifications

• Capacity: 1.92 kWh per unit, expandable to 11.52 kWh (6 units)
• Battery: lithium iron phosphate (LiFePO₄)
• Cycle life: 70 % of capacity after 6 000 cycles
• Solar input: 4 independent MPPTs, 11–55 V, up to 13 A per channel
• Maximum solar power: 2 000 W (4 × 500 W)
• AC input: up to 1 050 W, 10 A
• AC output: 1 200 W from the internal inverter, up to 2 300 W in bypass (10 A max.)
• Grid feed-in: up to 800 W
• Outlets: 2, each with a dedicated button
• Connectivity: Wi-Fi 2.4 GHz and Bluetooth BLE
• Operating temperature: −20 °C to 55 °C
• Humidity: 5–95 % RH
• Protection rating: IP65
• Noise: below 30 dB
• Dimensions: 284 × 255 × 458 mm
• Weight: 23.1 kg
• Warranty: 10 years
• EAN: 4895251643764

What's in the box

• 1 × EcoFlow STREAM Ultra
• 8 × PV connectors (MC4)
• 1 × AC cable with EU plug
• 1 × PV disconnect key
• 1 × mounting bracket and fixings
• 1 × protective cover
• 1 × installation manual

Compatibility

It belongs to the EcoFlow STREAM range and connects to 11–55 V solar panels, to compatible microinverters and to smart energy meters, including Shelly models. Connecting more than two units in parallel requires the official EcoFlow STREAM Parallel Cable. Compatibility with third-party microinverters has to be validated by the user. During a grid outage the system stops feeding energy into the grid as a safety measure (anti-backfeed).