EcoFlow DELTA 3 vs Goal Zero Yeti 1000 Core
EcoFlow DELTA 3 and Goal Zero Yeti 1000 Core hold almost the same battery and sell to the same person, which means the decision comes down to the details around the pack rather than the pack itself.
Two machines aimed at the same buyer
EcoFlow DELTA 3 holds within a rounding error of the same battery — 1024Wh against 983Wh — and that is what decides how long either one lasts on the same load.
EcoFlow DELTA 3 is rated for more charge cycles (4000 cycles to 80+% against 500+ cycles to 80%) — though makers do not all test to the same remaining capacity, so read those two numbers side by side rather than as a ranking.
Drawn from 5 specifications each maker publishes, of which 5 differ. We have not handled either machine — see our methodology.
Side by side
| Specification | EcoFlow DELTA 3 | Goal Zero Yeti 1000 Core |
|---|---|---|
| Battery capacity | 1024Whbetter | 983Wh |
| Cell chemistry | LFP | Li-ion NMC |
| Cycle life | 4000 cycles to 80+%better | 500+ cycles to 80% |
| Dimensions | Approx. 397.6*202*283.6mm | 15.25 x 10.23 x 9.86 in (38.74 x 25.98 x 25.04 cm) |
| Warranty | 5 years | 2 years |
What that capacity actually runs
Watt-hours are hard to picture, so here is each pack as runtime on the loads a machine this size is usually bought for. Both columns assume 85% inverter efficiency — the conservative end of what these are rated at — so read every figure as a floor.
| Load | EcoFlow DELTA 3 | Goal Zero Yeti 1000 Core |
|---|---|---|
| Laptop (60W) | 15 hours | 14 hours |
| CPAP, no humidifier (40W) | 22 hours | 21 hours |
| 12V camping fridge (45W average) | 19 hours | 19 hours |
| Starlink or router (55W) | 16 hours | 15 hours |
| Full-size fridge (150W average) | 5.8 hours | 5.6 hours |
Published by only one of them
A figure missing from a spec sheet is not a zero — it is a number the maker chose not to state. These appear on one page and not the other, so they cannot be compared, only noted.
- EcoFlow DELTA 3 — Weight: Approx. 12.5kg
- EcoFlow DELTA 3 — AC output: 1800W
- EcoFlow DELTA 3 — AC input: 1500W
- EcoFlow DELTA 3 — Noise: 600W<30db;1200W<40db
Where this comparison stops
Everything above is what the makers publish, not what either machine did in front of us. We own neither, so there is no noise measurement, no thermal behaviour under sustained load, and no view on how either holds up after two years. Makers also measure differently — cycle life at 80% capacity is not the same test as cycle life at 70% — so figures that look comparable sometimes are not. Treat this as a way to build a shortlist quickly, and read the caveats on our methodology page before you let a number decide.
Check current prices
Neither figure above is a price. These two move independently and often, and whichever is discounted this week is usually the answer when the specifications are as close as they are here.
- EcoFlow DELTA 3 on Amazon — search results for this model, as we do not have its listing on file
- Goal Zero Yeti 1000 Core on Amazon — search results for this model, as we do not have its listing on file
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Specifications retrieved 2026-09-17 from us.ecoflow.com and goalzero.com. Figures change without notice; check the maker's page before buying.