EcoFlow STREAM Pro vs Jackery SolarVault 3 Pro Max
Technical comparison · All-in-one
Same 800 VA feed-in limit and the same ten-year warranty, but sized differently: EcoFlow STREAM Pro takes up to 1,500 W of panels, Jackery SolarVault 3 Pro Max up to 4,000 W. Anyone with a large PV array decides on that figure. Figures are manufacturer-declared.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 1.92 kWh | 2.52 kWh |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 624.48 €/kWh | 287.7 €/kWh |
| List price | 1199 € | 725 € |
| Weight | 22.8 kg | 26.5 kg |
| Dimensions (W×D×H) | – × – × 45.8 cm | — |
| 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 | 0.171 €/kWh | 0.079 €/kWh |
| Energy density | 84.2 Wh/kg | 95.1 Wh/kg |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F2 — Room-sized (1–3 kWh) |
| Price | ||
| Price | ~450–1000 € | ~450–1000 € |
| Universal specs | ||
| Voltage | 230 V | 230 V |
| Category specs | ||
| Depth of discharge | — | 90 % |
| Expandable | Yes | Yes |
| Maximum expanded capacity | — | 15.12 kWh |
| Battery voltage | 19.2 V | 41.6 V |
| Feed-in limit | 800 VA | 800 VA |
| Inverter included | No | — |
| Maximum solar input | 1500 W | 4000 W |
| MPPT trackers | 3 | 4 |
| Grid charging | Yes | Yes |
| Maximum charge power | — | 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 | — | Floor standing |
| Minimum temperature | -20 °C | -20 °C |
| Maximum temperature | 55 °C | 55 °C |
| Cell heating | — | Yes |
| Works without internet | With limitations | With limitations |
| App required for setup | Yes | — |
| Declared standards | CE | VDE-AR-N 4105, IEC 62619 |
The differences that matter
- Solar input: 1,500 W on 3 MPPT → 4,000 W on 4 MPPT: the first caps the PV array sooner, the second accepts a much larger one.
- Backup: with a gap (EPS) up to 1,200 W → continuous (UPS) up to 1,600 W: the second carries more loads together and without interruption.
- Inverter not included and app needed for first start-up (EcoFlow STREAM Pro): two extra steps before you see it working.
Which one to choose
Choose EcoFlow STREAM Pro if…
your PV array is small and you accept that the inverter is not included and that first start-up goes through the app. It has 1.92 kWh and backup with a brief gap. The trade-off: less capacity and less backup power.
Choose Jackery SolarVault 3 Pro Max if…
you want to connect more panels and start from 2.52 kWh, expandable to 15.12 kWh; the cells are heated in cold weather and backup switches in a declared 20 ms. The trade-off: 26.5 kg, to be installed on the floor.
Where to buy
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