EcoFlow DELTA 3 Max vs EcoFlow DELTA Pro
Technical comparison · Home backup
Same brand, same 3-year warranty, different sizes: 2.048 kWh in 20.3 kg against 3.6 kWh in 45 kg. What decides it is solar input, 500 W against 1600 W, and how much weight you are willing to move (manufacturer-declared figures).
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 2.048 kWh | 3.6 kWh |
| Continuous output | 2400 W | 3600 W |
| Peak output | 4800 W | 7200 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 634.28 €/kWh | 610.83 €/kWh |
| List price | 1299 € | 2199 € |
| Weight | 20.3 kg | 45 kg |
| Dimensions (W×D×H) | 49.4 × 23.9 × 30.5 cm | — |
| Outlets | ||
| AC outlets | Yes (×4) | Yes (×4) |
| 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 | 0.579 €/kWh | 0.558 €/kWh |
| Energy density | 100.9 Wh/kg | 80 Wh/kg |
| Power-to-capacity ratio | 1.17 C | 1 C |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F3 — Flat-sized (3–8 kWh) |
| Price | ||
| Price | ~1000–2200 € | — |
| Universal specs | ||
| Voltage | — | 220 V |
| Category specs | ||
| Expandable | No | Yes |
| Fastest USB-C | 100 W | 100 W |
| Maximum charge power | 2.3 kW | 2.875 kW |
| Maximum solar input | 500 W | 1600 W |
| Backup power | UPS | EPS (brief interruption) |
| Switchover time | 10 ms | 30 ms |
| Ingress protection | IP20 | — |
| Mounting | Portable | Portable |
| Minimum temperature | — | -10 °C |
| Maximum temperature | — | 45 °C |
| Noise level | 25 dB | — |
| Wheels and handle | — | Yes |
The differences that matter
- 500 W → 1600 W solar input: the second accepts more than three times the panel power.
- 2.048 kWh → 3.6 kWh: at the same load the second lasts over one and a half times as long.
- 20.3 kg → 45 kg: the first can be moved without help, the second has to be wheeled.
- UPS 10 ms → EPS 30 ms: the first switches over without a gap, the second with a brief pause.
Which one to choose
Choose EcoFlow DELTA 3 Max if…
you want a backup to keep indoors and move without effort, charged from the grid, with UPS switchover (10 ms declared) and a declared 25 dB. The trade-off: 2400 W continuous and solar input limited to 500 W.
Choose EcoFlow DELTA Pro if…
you have solar panels and want to use them: up to 1600 W of input, an expandable battery and 3600 W continuous. The trade-off: 45 kg, with wheels and a handle, and an emergency switchover with a brief pause (EPS, 30 ms).
Where to buy
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The purchase links are the same as on the two product pages and don't influence the verdict. The product pages have the complete data.