BLUETTI Elite 400 vs EcoFlow DELTA 3
Technical comparison · Home backup
These are not machines of the same size: 3.84 kWh and 39 kg on wheels against 1.024 kWh and 12.5 kg to carry by hand. The choice is between run time and portability. Figures are manufacturer-declared.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 3.84 kWh | 1.024 kWh |
| Continuous output | 2600 W | 1800 W |
| Peak output | 5200 W | 3600 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 520.57 €/kWh | 877.93 €/kWh |
| List price | 1999 € | 899 € |
| Weight | 39 kg | 12.5 kg |
| Dimensions (W×D×H) | — | 20.2 × 39.76 × 28.36 cm |
| Outlets | ||
| AC outlets | Yes (×2) | Yes (×4) |
| How long it lasts | ||
| Battery life cycles | 1825 cicli | 1825 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | 3000 cicli | 4000 cicli |
| Capacity at end of cycle life | 80 % | 80 % |
| Warranty | 5 anni | 5 anni |
| The numbers | ||
| Cost of stored energy | 0.285 €/kWh | 0.481 €/kWh |
| Energy density | 98.5 Wh/kg | 81.9 Wh/kg |
| Power-to-capacity ratio | 0.68 C | 1.76 C |
| Identity | ||
| Use tier | F3 — Flat-sized (3–8 kWh) | F2 — Room-sized (1–3 kWh) |
| Price | ||
| Price | 1699 € | ~450–1000 € |
| Category specs | ||
| Depth of discharge | 95 % | — |
| Expandable | — | Yes |
| Maximum expanded capacity | — | 5 kWh |
| Fastest USB-C | 100 W | 100 W |
| Maximum charge power | 2.3 kW | 1.5 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 | — |
| Mounting | Portable | Portable |
| Minimum temperature | -20 °C | — |
| Maximum temperature | 40 °C | — |
| Noise level | — | 30 dB |
| Wheels and handle | Yes | — |
| App required for setup | No | — |
The differences that matter
- Capacity 3.84 kWh vs 1.024 kWh → at the same load the first stays on much longer
- Continuous output 2600 W vs 1800 W → the first carries more large appliances together
- Maximum solar input 1000 W vs 500 W → the second refills more slowly from panels
- Mains sockets 2 vs 4 → the second plugs in more devices directly
Which one to choose
Choose BLUETTI Elite 400 if…
A battery to keep at home for long outages: it uses 95% of its capacity, has wheels and a handle for its 39 kg, is rated for −20 to 40 °C and needs no app for first start-up. The trade-off is no expansion, two mains sockets and a 0–80% charge in 88 minutes.
Choose EcoFlow DELTA 3 if…
A 12.5 kg unit to carry by hand, with four sockets and a 10 ms changeover for a PC and router. With add-on modules it grows to 5 kWh, beyond the other's capacity. The trade-off is a small starting run time and a fan rated at 30 dB.
Where to buy
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