EcoFlow DELTA 3 Ultra vs EcoFlow DELTA 1300
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 1300 costs $800 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra holds 144% more energy (3072Wh vs 1260Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra has 3900W more surge headroom (7200W vs 3300W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 1300 is 52.9 lb lighter (30.9 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 800 — meaningful if you cycle it daily.
If you plan to cycle the battery daily, think twice about the EcoFlow DELTA 1300. 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.
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 original DELTA that put EcoFlow on the map. Fast-charging and high-surge for its day, but the NMC battery and lack of USB-C now show its age.
Best for: Bargain hunters who find it heavily discounted.
Where it falls short:
- NMC — ~800 cycles
- No USB-C PD
- 2-year warranty
| Spec | EcoFlow DELTA 3 Ultra | EcoFlow DELTA 1300 |
|---|---|---|
| Price | $1799 | $999 |
| Capacity | 3072 Wh | 1260 Wh |
| Continuous output | 3600 W | 1800 W |
| Surge output | 7200 W | 3300 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 4,000 | 800 |
| Weight (lighter wins) | 83.8 lb | 30.9 lb |
| Max solar | 800 W | 400 W |
| Recharge time (faster wins) | 1h 30m | 1h 36m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra | EcoFlow DELTA 1300 |
|---|---|---|
| Refrigerator | 43.5 hrs | 17.9 hrs |
| Mini fridge | 82.9 hrs | 34.0 hrs |
| Chest freezer | 32.6 hrs | 13.4 hrs |
| CPAP machine | 65.3 hrs | 26.8 hrs |
| Sump pump | 3.3 hrs | ❌ |