EcoFlow DELTA 2 Max vs EcoFlow DELTA 3 1500
Technical comparison · Home backup
Two expandable EcoFlow units with the same five-year warranty: the DELTA 2 Max has more capacity, more solar input and more power, the DELTA 3 1500 powers loads without a pause in a blackout. The choice depends on how much that pause matters; manufacturer-declared values.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 2.048 kWh | 1.536 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 | 585.45 €/kWh | 845.7 €/kWh |
| List price | 1199 € | 1299 € |
| Weight | 23 kg | — |
| Dimensions (W×D×H) | — | 21.3 × 39.8 × 28.15 cm |
| Outlets | ||
| AC outlets | Yes (×4) | 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 | 3000 cicli |
| Capacity at end of cycle life | 80 % | 70 % |
| Warranty | 5 anni | 5 anni |
| The numbers | ||
| Cost of stored energy | 0.321 €/kWh | 0.463 €/kWh |
| Energy density | 89 Wh/kg | — |
| Power-to-capacity ratio | 1.17 C | 1.17 C |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F2 — Room-sized (1–3 kWh) |
| Price | ||
| Price | — | 1299 € |
| Universal specs | ||
| Voltage | 220 V | — |
| Category specs | ||
| Expandable | Yes | Yes |
| Maximum expanded capacity | 6.144 kWh | 5.5 kWh |
| Fastest USB-C | 100 W | 100 W |
| Maximum charge power | 2.4 kW | 1.5 kW |
| 0–80% charge time | 53 min | 60 min |
| Maximum solar input | 1000 W | 500 W |
| Backup power | EPS (brief interruption) | UPS |
| Switchover time | 20 ms | 15 ms |
| Ingress protection | — | IP54 |
| Mounting | Portable | Portable |
| Minimum temperature | -10 °C | — |
| Maximum temperature | 45 °C | — |
| Noise level | — | 45 dB |
The differences that matter
- Solar input 1000 W vs 500 W → the DELTA 2 Max takes twice the panels.
- Grid charging 2.4 kW vs 1.5 kW, 0 to 80% in 53 minutes vs 60 → the 2 Max is ready again sooner after an outage.
- Power cut: EPS vs UPS → the 2 Max has a short pause, the 3 1500 does not.
- Continuous output 2400 W vs 1800 W → loads between 1800 and 2400 W run only on the 2 Max.
Which one to choose
Choose EcoFlow DELTA 2 Max if…
you want more energy and more solar: 2.05 kWh against 1.54, up to 6.14 kWh with expansions, and 1000 W of panels with grid charging at 2.4 kW. In a power cut the switch to battery has a short 20 ms pause (EPS).
Choose EcoFlow DELTA 3 1500 if…
the connected device must not notice the power cut: switchover takes 15 ms with no interruption (UPS), and protection is IP54. You give up 500 W of solar input, 600 W of continuous output and grid charging above 1.5 kW; the fan reaches 45 dB.
Where to buy
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