EcoFlow DELTA 3 Ultra Plus vs Goal Zero Yeti 6000X
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 Plus costs $3500 less. Whether that gap is worth closing depends on what you need to run.
- Goal Zero Yeti 6000X holds 98% more energy (6071Wh vs 3072Wh), 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.
- EcoFlow DELTA 3 Ultra Plus is 20.5 lb lighter (85.5 lb vs 106 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 6000X. 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
A huge-capacity home unit whose weakness is the same as its siblings: NMC cells with a low cycle count, at a flagship price.
Best for: Large-capacity backup for infrequent, deep-discharge use.
Where it falls short:
- NMC — ~500 cycles
- 2,000W output is low for the capacity
- 106 lb, 2-year warranty
| Spec | EcoFlow DELTA 3 Ultra Plus | Goal Zero Yeti 6000X |
|---|---|---|
| Price | $1999 | $5499 |
| Capacity | 3072 Wh | 6071 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 | 106 lb |
| Max solar | 1600 W | 600 W |
| Recharge time (faster wins) | 1h 30m | 4h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra Plus | Goal Zero Yeti 6000X |
|---|---|---|
| Refrigerator | 43.5 hrs | 86.0 hrs |
| Mini fridge | 82.9 hrs | 163.8 hrs |
| Chest freezer | 32.6 hrs | 64.5 hrs |
| CPAP machine | 65.3 hrs | 129.0 hrs |
| Sump pump | 3.3 hrs | 6.5 hrs |