EcoFlow DELTA Pro 3 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 $1900 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA Pro 3 holds 33% more energy (4096Wh vs 3072Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA Pro 3 has 800W more surge headroom (8000W vs 7200W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 3 Ultra is 29.2 lb lighter (83.8 lb vs 113 lb).
EcoFlow DELTA Pro 3
The most complete large unit here. 4096Wh, 4000W, 8000W surge and 2600W of solar — it does everything the F3800 does with less weight.
Best for: Whole-home backup buyers who want maximum solar recharge speed.
Where it falls short:
- $3,699 is a serious investment
- Overkill unless you're backing up a whole home
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 3 | EcoFlow DELTA 3 Ultra |
|---|---|---|
| Price | $3699 | $1799 |
| Capacity | 4096 Wh | 3072 Wh |
| Continuous output | 4000 W | 3600 W |
| Surge output | 8000 W | 7200 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 4,000 |
| Weight (lighter wins) | 113 lb | 83.8 lb |
| Max solar | 2600 W | 800 W |
| Recharge time (faster wins) | 1h 40m | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA Pro 3 | EcoFlow DELTA 3 Ultra |
|---|---|---|
| Refrigerator | 58.0 hrs | 43.5 hrs |
| Mini fridge | 110.5 hrs | 82.9 hrs |
| Chest freezer | 43.5 hrs | 32.6 hrs |
| CPAP machine | 87.0 hrs | 65.3 hrs |
| Sump pump | 4.4 hrs | 3.3 hrs |