EcoFlow DELTA 3 Ultra vs EcoFlow DELTA mini
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 mini costs $1200 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra holds 248% more energy (3072Wh vs 882Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra has 5100W more surge headroom (7200W vs 2100W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA mini is 60.2 lb lighter (23.6 lb vs 83.8 lb).
- EcoFlow DELTA 3 Ultra uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- EcoFlow DELTA 3 Ultra is rated for 4,000 cycles vs 800 — meaningful if you cycle it daily.
If you plan to cycle the battery daily, think twice about the EcoFlow DELTA mini. Its NMC cells are rated for 800 cycles against the LiFePO4 rival's longer life — over years of regular use that's the more expensive unit, whatever the sticker says.
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
A compact NMC unit with a surprisingly strong 1,400W output for its size — but the 800-cycle battery means it won't age like the LiFePO4 field.
Best for: Buyers who want strong output in a light unit and won’t cycle it daily.
Where it falls short:
- NMC — ~800 cycles
- 2-year warranty, 300W solar input
| Spec | EcoFlow DELTA 3 Ultra | EcoFlow DELTA mini |
|---|---|---|
| Price | $1799 | $599 |
| Capacity | 3072 Wh | 882 Wh |
| Continuous output | 3600 W | 1400 W |
| Surge output | 7200 W | 2100 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 4,000 | 800 |
| Weight (lighter wins) | 83.8 lb | 23.6 lb |
| Max solar | 800 W | 300 W |
| Recharge time (faster wins) | 1h 30m | 1h 36m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra | EcoFlow DELTA mini |
|---|---|---|
| Refrigerator | 43.5 hrs | 12.5 hrs |
| Mini fridge | 82.9 hrs | 23.8 hrs |
| Chest freezer | 32.6 hrs | 9.4 hrs |
| CPAP machine | 65.3 hrs | 18.7 hrs |
| Sump pump | 3.3 hrs | ❌ |