The EcoFlow STREAM Ultra + STREAM AC bundle combines a hybrid solar-ready battery with a plug-in AC unit for a total of 3.84 kWh across two 21.2 kg cabinets measuring 25.5 x 25.4 x 45.8 cm. The Ultra takes direct PV input up to 2000 W across four MPPT trackers (15-60 V) and can push 1200 W from the battery to its AC1/AC2 outlets, with an additional 1100 W of pass-through for a 2300 W total. The STREAM AC, added at the end of the chain, doubles the storage capacity through a single parallel cable so the pair behaves as one combined battery.

• 3.84 kWh combined storage, expandable to 11 520 Wh with additional STREAM batteries.
• STREAM Ultra offers direct solar input up to 2000 W (4 x 500 W) across four MPPT trackers.
• Combined AC output up to 2300 W (1200 W from battery + 1100 W pass-through) on the Ultra AC1/AC2.
• Grid feed-in of 800 W on shared circuits or 1200 W on a dedicated one.
• IP65 rating, <30 dB acoustic level and self-heating down to 5 °C for outdoor placement.
• Bundle includes a free P1 energy meter for automated import/export management.

Key specs

• Capacity per unit: 1920 Wh (bundle: 3840 Wh, 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
• Weight: 21.2 kg per unit
• AC input: 800 W (AC) / 1050 W (Ultra)
• AC output grid-tied: 800 W
• Warranty: 10 years

Well suited to homes that want to add PV storage to an existing balcony or garden panel setup while keeping enough headroom for evening consumption and blackout backup.