BLUETTI AC240 vs EcoFlow DELTA Pro 3
Technical comparison · High capacity
BLUETTI AC240 and EcoFlow DELTA Pro 3 are both high-capacity systems, but at different scales: 1.5 kWh against 4.1 kWh. One covers a room, the other a whole apartment with headroom to run several appliances together.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 1.536 kWh | 4.096 kWh |
| Continuous output | 2400 W | 4000 W |
| Peak output | 3600 W | 8000 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 1041.02 €/kWh | 805.42 €/kWh |
| List price | 1599 € | 3299 € |
| Weight | 33 kg | 51.5 kg |
| Dimensions (W×D×H) | 41.95 × 29.35 × 40.95 cm | 41.04 × 34.1 × 69.3 cm |
| Outlets | ||
| AC outlets | Yes (×4) | Yes (×5) |
| How long it lasts | ||
| Battery life cycles | 2190 cicli | 1825 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | 3500 cicli | 4000 cicli |
| Capacity at end of cycle life | 80 % | 80 % |
| Warranty | 6 anni | 5 anni |
| The numbers | ||
| Cost of stored energy | 0.475 €/kWh | 0.441 €/kWh |
| Energy density | 46.5 Wh/kg | 79.5 Wh/kg |
| Power-to-capacity ratio | 1.56 C | 0.98 C |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F3 — Flat-sized (3–8 kWh) |
| Price | ||
| Price | 1599 € | ~2200–5000 € |
| Category specs | ||
| Expandable | Yes | Yes |
| Maximum expanded capacity | 10.136 kWh | 12 kWh |
| Fastest USB-C | 100 W | 100 W |
| 0–80% charge time | 45 min | 60 min |
| Maximum solar input | 1200 W | 2600 W |
| Backup power | UPS | UPS |
| Switchover time | 15 ms | 10 ms |
| Ingress protection | IP65 | IP65 |
| Mounting | Portable | Portable |
| Minimum temperature | -20 °C | — |
| Maximum temperature | 40 °C | — |
| Noise level | 53 dB | 30 dB |
| Wheels and handle | — | Yes |
| Declared standards | CE | — |
The differences that matter
- Rated capacity: 1.5 kWh vs 4.1 kWh → the AC240 covers a room, the DELTA Pro 3 a whole apartment.
- Continuous output: 2400 W vs 4000 W → the DELTA Pro 3 runs several heavy appliances together.
- Maximum solar input: 1200 W vs 2600 W → the DELTA Pro 3 recharges faster from solar panels.
- Noise level: 53 dB vs 30 dB (manufacturer-rated) → the AC240 is more audible in a closed room.
Which one to choose
Choose BLUETTI AC240 if…
The AC240 is enough for room-scale use: 1.5 kWh (expandable to 10.1 kWh) and a continuous load up to 2400 W cover a single space. The trade-off is a more noticeable fan, manufacturer-rated at 53 dB, and solar input capped at 1200 W.
Choose EcoFlow DELTA Pro 3 if…
The DELTA Pro 3 covers a whole apartment: 4.1 kWh (expandable to 12 kWh) and a continuous load up to 4000 W handle several appliances together, with solar input up to 2600 W cutting recharge time. In exchange it's a system built for a larger scale of use.
Where to buy
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