EcoFlow STREAM AC Pro vs Jackery SolarVault 3 Pro Max AC
Technical comparison · AC-coupled, no panels
Two plug-in batteries of similar size, 1.92 and 2.52 kWh, with the same 800 VA feed-in limit. What separates them is how they mount and how they behave when the grid drops: wall-mounted with a brief pause, or floor-standing with continuous switchover.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 1.92 kWh | 2.52 kWh |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 520.31 €/kWh | 287.7 €/kWh |
| List price | 999 € | 725 € |
| Weight | — | 25.5 kg |
| How long it lasts | ||
| Battery life cycles | 3650 cicli | 3650 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | 6000 cicli | 6000 cicli |
| Capacity at end of cycle life | — | 70 % |
| Warranty | 10 anni | 10 anni |
| The numbers | ||
| Cost of stored energy | 0.143 €/kWh | 0.079 €/kWh |
| Energy density | — | 98.8 Wh/kg |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F2 — Room-sized (1–3 kWh) |
| Price | ||
| Price | — | ~450–1000 € |
| Universal specs | ||
| Voltage | — | 230 V |
| Category specs | ||
| Depth of discharge | — | 90 % |
| Expandable | Yes | Yes |
| Maximum expanded capacity | 11.52 kWh | 15.12 kWh |
| Battery voltage | 19.2 V | 41.6 V |
| Feed-in limit | 800 VA | 800 VA |
| Inverter included | No | — |
| Grid charging | Yes | Yes |
| Maximum charge power | 1.05 kW | 3.68 kW |
| Dynamic tariffs | Built in | Built in |
| Backup power | EPS (brief interruption) | UPS |
| Backup output | 1200 W | 1600 W |
| Switchover time | — | 20 ms |
| Ingress protection | IP65 | IP65 |
| Mounting | Wall mounted | Floor standing |
| Minimum temperature | -20 °C | -20 °C |
| Maximum temperature | 55 °C | 55 °C |
| Cell heating | Yes | Yes |
| Noise level | 30 dB | — |
| Works without internet | With limitations | With limitations |
| Declared standards | CE | VDE-AR-N 4105, IEC 62619 |
The differences that matter
- Grid charging 1.05 kW vs 3.68 kW → the time it takes to fill the battery in cheap-tariff hours (values as declared by the manufacturer).
- Backup with a pause at 1200 W vs continuity at 1600 W → what stays on without a gap when the grid drops.
- Wall vs floor → where it has to go in the house.
- Expansion up to 11.52 kWh vs 15.12 kWh → how much battery you can add later.
Which one to choose
Choose EcoFlow STREAM AC Pro if…
you have a free wall and no floor space, and want a unit rated at 30 dB. The trade-off: grid charging stops at 1.05 kW, backup reaches 1200 W with a brief interruption (EPS), and the battery is 1.92 kWh.
Choose Jackery SolarVault 3 Pro Max AC if…
you want backup in continuity mode (UPS, declared 20 ms switchover) up to 1600 W, grid charging at 3.68 kW and expansion up to 15.12 kWh. It stands on the floor and weighs 25.5 kg.
Where to buy
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