EcoFlow DELTA 3 Max vs EcoFlow DELTA 3 Plus
Technical comparison · Home backup
Two stations from the same family with opposite ideas: one has 2.048 kWh in a single 20.3 kg block, the other starts at 1.024 kWh in 12.5 kg and expands to 5 kWh. The rest follows from there (manufacturer-declared values).
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 2.048 kWh | 1.024 kWh |
| Continuous output | 2400 W | 1800 W |
| Peak output | 4800 W | 3600 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 634.28 €/kWh | 750.98 €/kWh |
| List price | 1299 € | 769 € |
| Weight | 20.3 kg | 12.5 kg |
| Dimensions (W×D×H) | 49.4 × 23.9 × 30.5 cm | 39.76 × 28.36 × 20.2 cm |
| Outlets | ||
| AC outlets | Yes (×4) | — |
| How long it lasts | ||
| Battery life cycles | 1095 cicli | 1825 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 | 3 anni | 5 anni |
| The numbers | ||
| Cost of stored energy | 0.579 €/kWh | 0.411 €/kWh |
| Energy density | 100.9 Wh/kg | 81.9 Wh/kg |
| Power-to-capacity ratio | 1.17 C | 1.76 C |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F2 — Room-sized (1–3 kWh) |
| Price | ||
| Price | ~1000–2200 € | ~450–1000 € |
| Category specs | ||
| Expandable | No | Yes |
| Maximum expanded capacity | — | 5 kWh |
| Fastest USB-C | 100 W | 140 W |
| Maximum charge power | 2.3 kW | 1.5 kW |
| Maximum solar input | 500 W | 1000 W |
| Backup power | UPS | UPS |
| Switchover time | 10 ms | 10 ms |
| Ingress protection | IP20 | — |
| Mounting | Portable | Portable |
| Noise level | 25 dB | — |
The differences that matter
- 2.048 kWh fixed in 20.3 kg against 1.024 kWh in 12.5 kg, expandable to 5 kWh → the first has the reserve straight away, the second is bought small and grows.
- 500 against 1000 W solar input → on the same array the second recharges far faster.
- 2400 against 1800 W continuous, 4800 against 3600 peak → the first carries more large appliances and harder starts.
- 3 against 5 years of warranty → the second is covered for longer.
Which one to choose
Choose EcoFlow DELTA 3 Max if…
you want a 2 kWh reserve straight away, with loads up to 2400 W, 4 outlets and mains recharge at 2.3 kW, in a unit that states 25 dB. It switches over in 10 ms in continuity (UPS) mode. The trade-off: it does not expand, only 500 W can come in from the sun so panel recharging is slow, and the warranty is 3 years.
Choose EcoFlow DELTA 3 Plus if…
you want to start with 1.024 kWh and add batteries up to 5 kWh when needed, with up to 1000 W from panels and a 5-year warranty. It weighs 12.5 kg and the USB-C port reaches 140 W, enough for a laptop. What you give up: 1800 W continuous and mains recharge at 1.5 kW.
Where to buy
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