EcoFlow DELTA 3 Plus 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 Plus costs $1250 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra Plus holds 200% more energy (3072Wh vs 1024Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra Plus has 3600W more surge headroom (7200W vs 3600W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 3 Plus is 56.8 lb lighter (28.7 lb vs 85.5 lb).
EcoFlow DELTA 3 Plus
The DELTA 3 with a $100 premium for smart-home integration and faster UPS switching. Same battery, same surge.
Best for: Home-office setups where a desktop or NAS can't tolerate a power blip.
Where it falls short:
- $100 more for features many buyers never use
- Same 1024Wh as the cheaper DELTA 3
EcoFlow DELTA 3 Ultra Plus
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 Plus | EcoFlow DELTA 3 Ultra Plus |
|---|---|---|
| Price | $749 | $1999 |
| Capacity | 1024 Wh | 3072 Wh |
| Continuous output | 1800 W | 3600 W |
| Surge output | 3600 W | 7200 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 4,000 |
| Weight (lighter wins) | 28.7 lb | 85.5 lb |
| Max solar | 500 W | 1600 W |
| Recharge time (faster wins) | 56 min | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Plus | EcoFlow DELTA 3 Ultra Plus |
|---|---|---|
| Refrigerator | 14.5 hrs | 43.5 hrs |
| Mini fridge | 27.6 hrs | 82.9 hrs |
| Chest freezer | 10.9 hrs | 32.6 hrs |
| CPAP machine | 21.8 hrs | 65.3 hrs |
| Sump pump | 1.1 hrs | 3.3 hrs |