EcoFlow DELTA 3 Classic vs EcoFlow DELTA 3 Max Plus
Technical comparison · Home backup
Same family, same job: powering a home and its devices through an outage. Size decides it: the DELTA 3 Classic is the light unit you can carry around, the DELTA 3 Max Plus has twice the energy and much more output. All figures are manufacturer-declared.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 1.024 kWh | 2.048 kWh |
| Continuous output | 1800 W | 3000 W |
| Peak output | 3000 W | 6000 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 584.96 €/kWh | 731.93 €/kWh |
| List price | 599 € | 1499 € |
| Weight | 12.1 kg | 22.1 kg |
| Dimensions (W×D×H) | 39.8 × 20 × 28.3 cm | 49.4 × 24.2 × 30.5 cm |
| Outlets | ||
| AC outlets | Yes (×3) | Yes (×4) |
| USB-C ports | Yes (×2) | Yes (×3) |
| USB-A ports | Yes | Yes |
| 12 V outputs | No | Yes (×2) |
| How long it lasts | ||
| Battery life cycles | 1095 cicli | 1095 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Warranty | 3 anni | 3 anni |
| The numbers | ||
| Cost of stored energy | 0.534 €/kWh | 0.668 €/kWh |
| Energy density | 84.6 Wh/kg | 92.7 Wh/kg |
| Power-to-capacity ratio | 1.76 C | 1.46 C |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F2 — Room-sized (1–3 kWh) |
| Price | ||
| Price | ~450–1000 € | ~1000–2200 € |
| Category specs | ||
| Expandable | — | Yes |
| Maximum expanded capacity | — | 10 kWh |
| Fastest USB-C | 100 W | 140 W |
| Maximum charge power | 1.4 kW | 2.3 kW |
| 0–80% charge time | 60 min | 68 min |
| Maximum solar input | 500 W | 1000 W |
| Backup power | UPS | UPS |
| Switchover time | 10 ms | 10 ms |
| Ingress protection | — | IP20 |
| Mounting | Portable | Portable |
| Minimum temperature | -10 °C | -10 °C |
| Maximum temperature | 45 °C | 45 °C |
| Noise level | — | 25 dB |
The differences that matter
- Capacity, 1.024 kWh vs 2.048 kWh → at the same load and ignoring losses, the Max Plus stays on twice as long.
- Continuous output, 1800 W vs 3000 W → the Max Plus carries more devices together before reaching its rated limit.
- Solar input, 500 W vs 1000 W → in theory both fill in about two hours of full sun, but the Max Plus stores twice the energy.
- 12 V outputs, none vs two → on the Max Plus, 12 V devices plug in directly.
Which one to choose
Choose EcoFlow DELTA 3 Classic if…
the unit gets moved often or sits on a shelf: 12.1 kg and 39.8 × 20 × 28.3 cm. The trade-off is less energy and less output power.
Choose EcoFlow DELTA 3 Max Plus if…
you need to cover an outage of several hours with several devices: the declared peak reaches 6000 W against 3000 W, and the fastest USB-C port 140 W against 100 W. The trade-off is a 22.1 kg unit, 49.4 cm wide, almost twice the Classic's weight.
Where to buy
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