EcoFlow DELTA 2 vs EcoFlow DELTA 3 Plus
Technical comparison · Home backup
With the same base capacity (1.024 kWh for both), the deciding difference is solar recharge speed and what happens when the grid drops: the DELTA 3 Plus doubles solar input and switches to battery without interruption.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 1.024 kWh | 1.024 kWh |
| Continuous output | 1800 W | 1800 W |
| Peak output | 2700 W | 3600 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 584.96 €/kWh | 750.98 €/kWh |
| List price | 599 € | 769 € |
| Weight | 12 kg | 12.5 kg |
| Dimensions (W×D×H) | — | 39.76 × 28.36 × 20.2 cm |
| Outlets | ||
| AC outlets | Yes (×4) | — |
| How long it lasts | ||
| Battery life cycles | 1825 cicli | 1825 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | 3000 cicli | 4000 cicli |
| Capacity at end of cycle life | 80 % | 80 % |
| Warranty | 5 anni | 5 anni |
| The numbers | ||
| Cost of stored energy | 0.321 €/kWh | 0.411 €/kWh |
| Energy density | 85.3 Wh/kg | 81.9 Wh/kg |
| Power-to-capacity ratio | 1.76 C | 1.76 C |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F2 — Room-sized (1–3 kWh) |
| Price | ||
| Price | — | ~450–1000 € |
| Universal specs | ||
| Voltage | 220 V | — |
| Category specs | ||
| Expandable | Yes | Yes |
| Maximum expanded capacity | — | 5 kWh |
| Fastest USB-C | 100 W | 140 W |
| Maximum charge power | 1.2 kW | 1.5 kW |
| Maximum solar input | 500 W | 1000 W |
| Backup power | EPS (brief interruption) | UPS |
| Switchover time | 30 ms | 10 ms |
| Mounting | Portable | Portable |
| Minimum temperature | -10 °C | — |
| Maximum temperature | 45 °C | — |
The differences that matter
- Maximum solar input: 500 W vs 1000 W → the DELTA 3 Plus recharges from solar much faster for the same sunlight.
- Backup power: EPS with a pause vs UPS continuity → a design choice: the DELTA 3 Plus keeps the load powered, the DELTA 2 has a brief interruption.
- Switching time: 30 ms vs 10 ms → the DELTA 3 Plus switches to battery with virtually no impact on the load.
- Maximum charge power: 1.2 kW vs 1.5 kW → the DELTA 3 Plus is back to full charge from mains a bit sooner.
Which one to choose
Choose EcoFlow DELTA 2 if…
Pick the DELTA 2 if solar charging up to 500 W is enough and you accept a brief interruption when switching to battery (EPS): it's the entry point of the line, with a 30 ms switching time.
Choose EcoFlow DELTA 3 Plus if…
Pick the DELTA 3 Plus if you run equipment sensitive to even a momentary interruption: UPS continuity switches to battery in 10 ms instead of 30, and solar input reaches up to 1000 W to halve recharge time for the same sunlight.
Where to buy
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