EcoFlow DELTA 3 vs EcoFlow DELTA Pro
Technical comparison · Home backup
These are not one machine in two sizes: a 1.024 kWh battery you carry by hand against a 3.6 kWh unit on wheels that is hard to lift. The choice depends on how long, and with how many appliances, you want to ride out an outage. Figures are manufacturer-declared.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 1.024 kWh | 3.6 kWh |
| Continuous output | 1800 W | 3600 W |
| Peak output | 3600 W | 7200 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 877.93 €/kWh | 610.83 €/kWh |
| List price | 899 € | 2199 € |
| Weight | 12.5 kg | 45 kg |
| Dimensions (W×D×H) | 20.2 × 39.76 × 28.36 cm | — |
| Outlets | ||
| AC outlets | Yes (×4) | Yes (×4) |
| How long it lasts | ||
| Battery life cycles | 1825 cicli | 1095 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | 4000 cicli | 3500 cicli |
| Capacity at end of cycle life | 80 % | 80 % |
| Warranty | 5 anni | 3 anni |
| The numbers | ||
| Cost of stored energy | 0.481 €/kWh | 0.558 €/kWh |
| Energy density | 81.9 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 | Yes |
| Maximum expanded capacity | 5 kWh | — |
| Fastest USB-C | 100 W | 100 W |
| Maximum charge power | 1.5 kW | 2.875 kW |
| 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 |
| Maximum temperature | — | 45 °C |
| Noise level | 30 dB | — |
| Wheels and handle | — | Yes |
The differences that matter
- Capacity 1.024 kWh vs 3.6 kWh → at the same load the second stays on much longer
- Continuous output 1800 W vs 3600 W → the second carries more large appliances together
- Maximum solar input 500 W vs 1600 W → the first refills slowly from panels, the second uses a large array
- Backup: UPS at 10 ms vs EPS at 30 ms → the first switches over much faster, the second with a brief pause
Which one to choose
Choose EcoFlow DELTA 3 if…
A router, a PC and a few light loads for a short outage, on a 12.5 kg battery that goes to another room or into the car. It has five years of warranty against three and can grow to 5 kWh, but it runs down quickly once the load increases.
Choose EcoFlow DELTA Pro if…
A household with several appliances to feed through a long outage, where the battery sits in a corner and is only moved now and then on its wheels and handle; grid charging reaches 2.875 kW and operation is rated from −10 to 45 °C. The trade-off is 45 kg and a warranty two years shorter. Peaks of up to 7200 W are a rated limit, not an everyday load.
Where to buy
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