EcoFlow DELTA Pro vs EcoFlow DELTA 3 Ultra
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 Ultra costs $1400 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA Pro holds 17% more energy (3600Wh vs 3072Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra is 15.2 lb lighter (83.8 lb vs 99 lb).
- EcoFlow DELTA 3 Ultra 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 Ultra
3kWh with 7200W surge at $1799 — this is whole-home territory at a mid-range price. The catch is the 800W solar input.
Best for: Grid-tied home backup where you recharge from the wall, not the sun.
Where it falls short:
- 800W solar input is low for 3kWh — slow off-grid refills
- 83.8 lb
| Spec | EcoFlow DELTA Pro | EcoFlow DELTA 3 Ultra |
|---|---|---|
| Price | $3199 | $1799 |
| Capacity | 3600 Wh | 3072 Wh |
| Continuous output | 3600 W | 3600 W |
| Surge output | 7200 W | 7200 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,500 | 4,000 |
| Weight (lighter wins) | 99 lb | 83.8 lb |
| Max solar | 1600 W | 800 W |
| Recharge time (faster wins) | 2h 45m | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA Pro | EcoFlow DELTA 3 Ultra |
|---|---|---|
| Refrigerator | 51.0 hrs | 43.5 hrs |
| Mini fridge | 97.1 hrs | 82.9 hrs |
| Chest freezer | 38.3 hrs | 32.6 hrs |
| CPAP machine | 76.5 hrs | 65.3 hrs |
| Sump pump | 3.8 hrs | 3.3 hrs |