EcoFlow DELTA 3 Classic vs EcoFlow DELTA Pro
Technical comparison · Home backup
Two EcoFlow power stations of very different size: the DELTA 3 Classic has 1.024 kWh and weighs 12.1 kg, the DELTA Pro has 3.6 kWh and weighs 45 kg. The choice depends on how much energy and power you need together, not on an extra feature. Figures are manufacturer-declared.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 1.024 kWh | 3.6 kWh |
| Continuous output | 1800 W | 3600 W |
| Peak output | 3000 W | 7200 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 584.96 €/kWh | 610.83 €/kWh |
| List price | 599 € | 2199 € |
| Weight | 12.1 kg | 45 kg |
| Dimensions (W×D×H) | 39.8 × 20 × 28.3 cm | — |
| Outlets | ||
| AC outlets | Yes (×3) | Yes (×4) |
| USB-C ports | Yes (×2) | — |
| USB-A ports | Yes | — |
| 12 V outputs | No | — |
| How long it lasts | ||
| Battery life cycles | 1095 cicli | 1095 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | — | 3500 cicli |
| Capacity at end of cycle life | — | 80 % |
| Warranty | 3 anni | 3 anni |
| The numbers | ||
| Cost of stored energy | 0.534 €/kWh | 0.558 €/kWh |
| Energy density | 84.6 Wh/kg | 80 Wh/kg |
| Power-to-capacity ratio | 1.76 C | 1 C |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F3 — Flat-sized (3–8 kWh) |
| Price | ||
| Price | ~450–1000 € | — |
| Universal specs | ||
| Voltage | — | 220 V |
| Category specs | ||
| Expandable | — | Yes |
| Fastest USB-C | 100 W | 100 W |
| Maximum charge power | 1.4 kW | 2.875 kW |
| 0–80% charge time | 60 min | — |
| Maximum solar input | 500 W | 1600 W |
| Backup power | UPS | EPS (brief interruption) |
| Switchover time | 10 ms | 30 ms |
| Mounting | Portable | Portable |
| Minimum temperature | -10 °C | -10 °C |
| Maximum temperature | 45 °C | 45 °C |
| Wheels and handle | — | Yes |
The differences that matter
- Capacity 1.024 vs 3.6 kWh (the second is expandable) → at the same load the DELTA Pro stays on far longer.
- Continuous output 1,800 vs 3,600 W, peak 3,000 vs 7,200 W → loads above 1,800 W need the DELTA Pro.
- Solar input 500 vs 1,600 W → with panels, the DELTA Pro recharges much faster during the day.
- Weight 12.1 vs 45 kg → the first is carried by hand, the second rolls on wheels.
Which one to choose
Choose EcoFlow DELTA 3 Classic if…
you carry it by hand and use it as a UPS for small devices: 12.1 kg, three mains outlets, two USB-C and one USB-A, 10 ms switchover. It charges from 0 to 80% in 60 minutes. The trade-off is a 1.024 kWh battery, 1,800 W continuous and 500 W of solar input.
Choose EcoFlow DELTA Pro if…
you need to run large loads or keep the reserve going longer: 3.6 kWh and expandable, 3,600 W continuous with 7,200 W peak, 1,600 W of solar input, four mains outlets, wheels and a handle. The trade-off is 45 kg and a backup mode with a brief pause (EPS, 30 ms switchover).
Where to buy
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