EcoFlow DELTA Pro vs EcoFlow DELTA Pro 3
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Our verdict
The DELTA Pro 3 is EcoFlow’s successor to the DELTA Pro, and it improves on it almost everywhere. It holds more energy (4,096 vs 3,600 Wh), delivers more power (4,000 W continuous and 8,000 W surge vs 3,600 W and 7,200 W), takes far more solar input (2,600 vs 1,600 W), is rated for more cycles (4,000 vs 3,500) and supports 120/240 V output from a single unit.
The original DELTA Pro is lighter (99 vs 113.5 lb) and has a lower list price ($2,399 vs $3,299). With two extra batteries it reaches about 10.8 kWh; the DELTA Pro 3 reaches about 12 kWh. Unless you find the DELTA Pro at a deep discount, the DELTA Pro 3 is the better long-term home-backup system.
Based on manufacturer specs and list prices checked Oct 13, 2026.
Where the EcoFlow DELTA Pro wins
- Lighter (99 vs 113.5 lb)
- More battery per list-price dollar (1.5 vs 1.24 Wh/$)
Where the EcoFlow DELTA Pro 3 wins
- 14% more battery capacity (4,096 vs 3,600 Wh)
- More continuous output (4,000 vs 3,600 W)
- Higher surge for motor start-ups (8,000 vs 7,200 W)
- Faster solar charging (2,600 vs 1,600 W input)
- More rated cycles (4,000 vs 3,500)
- Expandable to 12,288 Wh (vs 10,800 Wh)
Spec by spec
| Spec | EcoFlow DELTA Pro | EcoFlow DELTA Pro 3 |
|---|---|---|
| Battery capacity | 3,600 Wh | 4,096 Wh (better) |
| Continuous AC output | 3,600 W | 4,000 W (better) |
| Surge / peak output | 7,200 W | 8,000 W (better) |
| Battery chemistry | LiFePO4 | LiFePO4 |
| Rated charge cycles | 3,500 | 4,000 (better) |
| Lifetime energy (capacity × cycles) | 12,600 kWh | 16,384 kWh (better) |
| Weight | 99 lb (better) | 113.5 lb |
| Energy per pound | 36.4 Wh/lb (better) | 36.1 Wh/lb |
| AC outlets | 5 | — |
| Max USB-C output | 100 W | — |
| Max solar input | 1,600 W | 2,600 W (better) |
| Wall charge to 100% | 162 min | — |
| Expandable to | 10,800 Wh | 12,288 Wh (better) |
| List price at maker | $2,399 | $3,299 |
| Runs a full-size fridge | 2.4 days | 2.8 days |
| CPAP nights (40 W, 8 h) | 9 | 10 |
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