EcoFlow DELTA 3 Ultra vs EcoFlow DELTA 3 Ultra Plus
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 $200 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra is 1.7 lb lighter (83.8 lb vs 85.5 lb).
We'd skip the EcoFlow DELTA 3 Ultra Plus in this matchup. It costs $200 more than the EcoFlow DELTA 3 Ultra while matching or trailing it on capacity, surge and cycle life — there's no spec here that justifies the premium.
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
The Ultra's solar problem solved: same everything, but 1600W of PV input instead of 800W. That doubles your off-grid refill speed for $200.
Best for: Off-grid cabins and van builds that actually recharge from panels.
Where it falls short:
- $1999 approaches DELTA Pro 3 pricing
- 85.5 lb
| Spec | EcoFlow DELTA 3 Ultra | EcoFlow DELTA 3 Ultra Plus |
|---|---|---|
| Price | $1799 | $1999 |
| Capacity | 3072 Wh | 3072 Wh |
| Continuous output | 3600 W | 3600 W |
| Surge output | 7200 W | 7200 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 4,000 |
| Weight (lighter wins) | 83.8 lb | 85.5 lb |
| Max solar | 800 W | 1600 W |
| Recharge time (faster wins) | 1h 30m | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra | EcoFlow DELTA 3 Ultra Plus |
|---|---|---|
| Refrigerator | 43.5 hrs | 43.5 hrs |
| Mini fridge | 82.9 hrs | 82.9 hrs |
| Chest freezer | 32.6 hrs | 32.6 hrs |
| CPAP machine | 65.3 hrs | 65.3 hrs |
| Sump pump | 3.3 hrs | 3.3 hrs |