EcoFlow DELTA 3 Ultra vs Goal Zero Yeti 3000X
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 3 Ultra holds 1% more energy (3072Wh vs 3032Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra has 3700W more surge headroom (7200W vs 3500W) — that decides whether a fridge, pump or AC compressor will actually start.
- Goal Zero Yeti 3000X is 14.0 lb lighter (69.75 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 500 — meaningful if you cycle it daily.
We'd skip the Goal Zero Yeti 3000X in this matchup. It costs $1400 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
A large-capacity unit held back by aging NMC cells. The capacity is real; the cycle life and charge speed are a generation behind.
Best for: Occasional-use backup where low cycle count won't bite.
Where it falls short:
- NMC — ~500 cycles against 4,000 for LiFePO4 rivals
- 69.75 lb and a 4-hour recharge
- 2-year warranty
| Spec | EcoFlow DELTA 3 Ultra | Goal Zero Yeti 3000X |
|---|---|---|
| Price | $1799 | $3199 |
| Capacity | 3072 Wh | 3032 Wh |
| Continuous output | 3600 W | 2000 W |
| Surge output | 7200 W | 3500 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 4,000 | 500 |
| Weight (lighter wins) | 83.8 lb | 69.75 lb |
| Max solar | 800 W | 600 W |
| Recharge time (faster wins) | 1h 30m | 4h |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra | Goal Zero Yeti 3000X |
|---|---|---|
| Refrigerator | 43.5 hrs | 43.0 hrs |
| Mini fridge | 82.9 hrs | 81.8 hrs |
| Chest freezer | 32.6 hrs | 32.2 hrs |
| CPAP machine | 65.3 hrs | 64.4 hrs |
| Sump pump | 3.3 hrs | 3.2 hrs |