EcoFlow DELTA Pro vs EcoFlow DELTA 3 Max
Side-by-side on the specs that decide it — surge, capacity, runtime and price.
Both models' specs verified against manufacturer listings · Last updated
The short answer
EcoFlow DELTA 3 Max costs $2100 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA Pro holds 76% more energy (3600Wh vs 2048Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA Pro has 2400W more surge headroom (7200W vs 4800W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 3 Max is 43.9 lb lighter (55.1 lb vs 99 lb).
- EcoFlow DELTA 3 Max is rated for 4,000 cycles vs 3,500 — meaningful if you cycle it daily.
EcoFlow DELTA Pro
The previous-generation flagship, now mostly worth buying on discount. The Pro 3 beats it on nearly every axis.
Best for: Bargain hunters who find it steeply discounted against the Pro 3.
Where it falls short:
- 99 lb and 165-minute recharge — both beaten by the Pro 3
- Aging platform; expect it to be phased out
EcoFlow DELTA 3 Max
The value leader in the 2kWh class. Same 4800W surge as the DELTA 2 Max at $500 less, with 1000 more cycles.
Best for: Home backup buyers who want compressor-starting surge without paying flagship prices.
Where it falls short:
- 55 lb is a two-hand lift
- Only marginally lighter than heavier rivals
| Spec | EcoFlow DELTA Pro | EcoFlow DELTA 3 Max |
|---|---|---|
| Price | $3199 | $1099 |
| Capacity | 3600 Wh | 2048 Wh |
| Continuous output | 3600 W | 2400 W |
| Surge output | 7200 W | 4800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,500 | 4,000 |
| Weight (lighter wins) | 99 lb | 55.1 lb |
| Max solar | 1600 W | 1000 W |
| Recharge time (faster wins) | 2h 45m | 1h 22m |
Runtime head-to-head
| Appliance | EcoFlow DELTA Pro | EcoFlow DELTA 3 Max |
|---|---|---|
| Refrigerator | 51.0 hrs | 29.0 hrs |
| Mini fridge | 97.1 hrs | 55.3 hrs |
| Chest freezer | 38.3 hrs | 21.8 hrs |
| CPAP machine | 76.5 hrs | 43.5 hrs |
| Sump pump | 3.8 hrs | 2.2 hrs |