EcoFlow DELTA 3 Ultra Plus vs EcoFlow DELTA Max 2000
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 Max 2000 costs $900 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra Plus holds 52% more energy (3072Wh vs 2016Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra Plus has 3800W more surge headroom (7200W vs 3400W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA Max 2000 is 37.5 lb lighter (48 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 800 — meaningful if you cycle it daily.
If you plan to cycle the battery daily, think twice about the EcoFlow DELTA Max 2000. Its NMC cells are rated for 800 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 2kWh EcoFlow. Still capable and expandable, but its NMC cells and 800-cycle rating are a real step below the LiFePO4 DELTA 3 that replaced it.
Best for: Only at a steep discount against the DELTA 3 Max.
Where it falls short:
- NMC — roughly 800 cycles vs 4,000 for the DELTA 3 Max
- 2-year warranty
| Spec | EcoFlow DELTA 3 Ultra Plus | EcoFlow DELTA Max 2000 |
|---|---|---|
| Price | $1999 | $1099 |
| Capacity | 3072 Wh | 2016 Wh |
| Continuous output | 3600 W | 2400 W |
| Surge output | 7200 W | 3400 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 4,000 | 800 |
| Weight (lighter wins) | 85.5 lb | 48 lb |
| Max solar | 1600 W | 800 W |
| Recharge time (faster wins) | 1h 30m | 1h 48m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra Plus | EcoFlow DELTA Max 2000 |
|---|---|---|
| Refrigerator | 43.5 hrs | 28.6 hrs |
| Mini fridge | 82.9 hrs | 54.4 hrs |
| Chest freezer | 32.6 hrs | 21.4 hrs |
| CPAP machine | 65.3 hrs | 42.8 hrs |
| Sump pump | 3.3 hrs | 2.1 hrs |