The EcoFlow STREAM AC + STREAM AC Pro bundle is a two-battery storage set that reaches 3.84 kWh total (1.92 kWh each) using two identical 21.2 kg cabinets of 25.5 x 25.4 x 45.8 cm. Both batteries are plug-in units - no PV input, no external inverter - and can either work independently to protect two different circuits during a blackout or run in parallel via the separately sold link cable for a combined 2300 W AC output (1200 W from the primary plus 1100 W pass-through). Six STREAM units can eventually be chained together for larger storage projects.

• Combined 3.84 kWh out of the box, expandable to 11 520 Wh through further STREAM units.
• Two integrated sockets deliver up to 2300 W of appliance-side power once paralleled.
• Feed-in of 800 W on a shared branch or 1200 W on a dedicated one for effective grid support.
• Grid charging of 1050 W per battery for balanced overnight recharging.
• IP65 rating, self-heating down to 5 °C and <30 dB acoustic level suit indoor or sheltered outdoor placement.
• Compatible with EcoFlow P1 dongle, EcoFlow Smart Meter 120A, Shelly Pro 3EM, Homey P1 and Shelly 3EM meters for self-regulating operation.

Key specs

• Capacity: 3840 Wh combined (1920 Wh per unit, expandable to 11 520 Wh)
• Cycles: 6000 to 70% capacity
• Operating range: -20 to 55 °C
• Acoustic: <30 dB
• IP rating: IP65
• Dimensions: 25.5 x 25.4 x 45.8 cm each
• Weight: 21.2 kg each
• AC input: 800 W
• AC output (grid-tied): 800 W

A fit for homeowners who want a solid entry pack of storage that already covers evening use and blackout backup, with room to grow into a bigger system later by adding more STREAM units.