EcoFlow DELTA 3 Ultra Plus vs Goal Zero Yeti 1500X
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
These two cost the same, so the decision comes down to what you're powering.
- EcoFlow DELTA 3 Ultra Plus holds 103% more energy (3072Wh vs 1516Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra Plus has 3700W more surge headroom (7200W vs 3500W) — that decides whether a fridge, pump or AC compressor will actually start.
- Goal Zero Yeti 1500X is 39.9 lb lighter (45.64 lb vs 85.5 lb).
- EcoFlow DELTA 3 Ultra Plus uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- EcoFlow DELTA 3 Ultra Plus 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 1500X. 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.
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
The previous-generation flagship. Its NMC battery is the catch — far fewer cycles than the LiFePO4 units now around it, including its own replacement.
Best for: Only at a steep discount against the newer LiFePO4 Yeti 1500.
Where it falls short:
- NMC chemistry — roughly 500 cycles vs 4,000 for the new 1500
- 180-minute recharge is slow
- Only a 2-year warranty
| Spec | EcoFlow DELTA 3 Ultra Plus | Goal Zero Yeti 1500X |
|---|---|---|
| Price | $1999 | $1999 |
| Capacity | 3072 Wh | 1516 Wh |
| Continuous output | 3600 W | 2000 W |
| Surge output | 7200 W | 3500 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 4,000 | 500 |
| Weight (lighter wins) | 85.5 lb | 45.64 lb |
| Max solar | 1600 W | 600 W |
| Recharge time (faster wins) | 1h 30m | 3h |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra Plus | Goal Zero Yeti 1500X |
|---|---|---|
| Refrigerator | 43.5 hrs | 21.5 hrs |
| Mini fridge | 82.9 hrs | 40.9 hrs |
| Chest freezer | 32.6 hrs | 16.1 hrs |
| CPAP machine | 65.3 hrs | 32.2 hrs |
| Sump pump | 3.3 hrs | 1.6 hrs |