BLUETTI Elite 400 vs EcoFlow DELTA 3 Max
Technical comparison · Home backup
Almost the same power, different energy: 2,600 W and 3.8 kWh against 2,400 W and 2 kWh. The choice is between a larger, heavier reserve and a more compact one.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 3.84 kWh | 2.048 kWh |
| Continuous output | 2600 W | 2400 W |
| Peak output | 5200 W | 4800 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 520.57 €/kWh | 634.28 €/kWh |
| List price | 1999 € | 1299 € |
| Weight | 39 kg | 20.3 kg |
| Dimensions (W×D×H) | — | 49.4 × 23.9 × 30.5 cm |
| Outlets | ||
| AC outlets | Yes (×2) | 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 | 3000 cicli | — |
| Capacity at end of cycle life | 80 % | — |
| Warranty | 5 anni | 3 anni |
| The numbers | ||
| Cost of stored energy | 0.285 €/kWh | 0.579 €/kWh |
| Energy density | 98.5 Wh/kg | 100.9 Wh/kg |
| Power-to-capacity ratio | 0.68 C | 1.17 C |
| Identity | ||
| Use tier | F3 — Flat-sized (3–8 kWh) | F2 — Room-sized (1–3 kWh) |
| Price | ||
| Price | 1699 € | ~1000–2200 € |
| Category specs | ||
| Depth of discharge | 95 % | — |
| Expandable | — | No |
| Fastest USB-C | 100 W | 100 W |
| Maximum charge power | 2.3 kW | 2.3 kW |
| 0–80% charge time | 88 min | — |
| Maximum solar input | 1000 W | 500 W |
| Backup power | UPS | UPS |
| Switchover time | 15 ms | 10 ms |
| Ingress protection | IP20 | IP20 |
| Mounting | Portable | Portable |
| Minimum temperature | -20 °C | — |
| Maximum temperature | 40 °C | — |
| Noise level | — | 25 dB |
| Wheels and handle | Yes | — |
| App required for setup | No | — |
The differences that matter
- Solar input 1,000 W vs 500 W → filling from the sun takes about the same, roughly four hours of full sun, but the first needs twice the panels.
- Maximum charge power 2.3 kW on both → at the same charging power the first takes almost twice as long: about an hour and 40 minutes against 53.
- Warranty 5 years vs 3 → the first is covered for longer.
Figures are declared by the manufacturer.
Which one to choose
Choose BLUETTI Elite 400 if…
you want nearly twice the energy in the same power class, for example to keep average loads running for more than three hours at 1,000 W, and you accept moving 39 kg. The trade-off is the weight and only two mains outlets.
Choose EcoFlow DELTA 3 Max if…
around two hours at 1,000 W is enough, and you want four mains outlets and a 20.3 kg unit. The trade-off is the reserve, a little over half as large, with no way to expand it.
Where to buy
Paid link: the price for you does not change.
As an Amazon Associate I earn from qualifying purchases.
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.