EcoFlow DELTA 3 vs EcoFlow DELTA 3 Max
Technical comparison · Home backup
Both DELTA 3 models share LFP cells and four AC outlets, so the choice comes down to how much energy you want from day one and whether you want to add more later. Power and warranty figures are manufacturer-declared.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 1.024 kWh | 2.048 kWh |
| Continuous output | 1800 W | 2400 W |
| Peak output | 3600 W | 4800 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 877.93 €/kWh | 634.28 €/kWh |
| List price | 899 € | 1299 € |
| Weight | 12.5 kg | 20.3 kg |
| Dimensions (W×D×H) | 20.2 × 39.76 × 28.36 cm | 49.4 × 23.9 × 30.5 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 | — |
| Capacity at end of cycle life | 80 % | — |
| Warranty | 5 anni | 3 anni |
| The numbers | ||
| Cost of stored energy | 0.481 €/kWh | 0.579 €/kWh |
| Energy density | 81.9 Wh/kg | 100.9 Wh/kg |
| Power-to-capacity ratio | 1.76 C | 1.17 C |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F2 — Room-sized (1–3 kWh) |
| Price | ||
| Price | ~450–1000 € | ~1000–2200 € |
| Category specs | ||
| Expandable | Yes | No |
| Maximum expanded capacity | 5 kWh | — |
| Fastest USB-C | 100 W | 100 W |
| Maximum charge power | 1.5 kW | 2.3 kW |
| Maximum solar input | 500 W | 500 W |
| Backup power | UPS | UPS |
| Switchover time | 10 ms | 10 ms |
| Ingress protection | — | IP20 |
| Mounting | Portable | Portable |
| Noise level | 30 dB | 25 dB |
The differences that matter
- 1.024 vs 2.048 kWh → the Max gives you twice the energy to use before you have to recharge.
- Expandable to 5 kWh vs not expandable → the DELTA 3 can grow after purchase; the Max stays at the capacity you buy.
- 1800 vs 2400 W continuous → the Max lets you run more appliances at once before hitting the ceiling.
- 5 vs 3 years of warranty → the DELTA 3 stays covered two years longer.
Which one to choose
Choose EcoFlow DELTA 3 if…
you want to start with a 12.5 kg unit and keep the option to expand up to 5 kWh, buying extra capacity only if you need it. The trade-off is a lower load ceiling and a little over one kWh to draw on before recharging.
Choose EcoFlow DELTA 3 Max if…
the station stays in one place at home and you would rather have more energy in a single 20.3 kg block than plan for add-on modules. You accept that it cannot be expanded and that the warranty is shorter.
Where to buy
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