EcoFlow DELTA 3 Ultra vs Goal Zero Yeti 1000X
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
Goal Zero Yeti 1000X costs $600 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra holds 213% more energy (3072Wh vs 983Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra has 4200W more surge headroom (7200W vs 3000W) — that decides whether a fridge, pump or AC compressor will actually start.
- Goal Zero Yeti 1000X is 52.1 lb lighter (31.68 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.
If you plan to cycle the battery daily, think twice about the Goal Zero Yeti 1000X. Its NMC cells are rated for 500 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
The older X-series 1kWh. Rugged and expandable, but its Li-ion cells and 2-year warranty look dated next to the LiFePO4 6th-gen Yeti 1000.
Best for: Only at a discount against the newer LiFePO4 Yeti 1000.
Where it falls short:
- NMC — ~500 cycles vs 4,000 for the new Yeti 1000
- 2-year warranty
| Spec | EcoFlow DELTA 3 Ultra | Goal Zero Yeti 1000X |
|---|---|---|
| Price | $1799 | $1199 |
| Capacity | 3072 Wh | 983 Wh |
| Continuous output | 3600 W | 1500 W |
| Surge output | 7200 W | 3000 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 4,000 | 500 |
| Weight (lighter wins) | 83.8 lb | 31.68 lb |
| Max solar | 800 W | 600 W |
| Recharge time (faster wins) | 1h 30m | 1h 50m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra | Goal Zero Yeti 1000X |
|---|---|---|
| Refrigerator | 43.5 hrs | 13.9 hrs |
| Mini fridge | 82.9 hrs | 26.5 hrs |
| Chest freezer | 32.6 hrs | 10.4 hrs |
| CPAP machine | 65.3 hrs | 20.9 hrs |
| Sump pump | 3.3 hrs | ❌ |