EcoFlow DELTA 2 vs EcoFlow DELTA 3 Max
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 2 costs $200 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Max holds 100% more energy (2048Wh vs 1024Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Max has 2600W more surge headroom (4800W vs 2200W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 2 is 28.1 lb lighter (27 lb vs 55.1 lb).
- EcoFlow DELTA 3 Max is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
EcoFlow DELTA 2
The value pick in the 1kWh class. Cheaper than the Anker C1000 with nearly identical capacity — but check the surge number before you buy.
Best for: Budget-conscious buyers running electronics and a fridge, with no motor-driven loads.
Where it falls short:
- X-Boost tops out at 2200W — the least surge headroom of any 1kWh unit we list
- 80-minute recharge is slower than Anker's 58
EcoFlow DELTA 3 Max
The value leader in the 2kWh class. Same 4800W surge as the DELTA 2 Max at $500 less, with 1000 more cycles.
Best for: Home backup buyers who want compressor-starting surge without paying flagship prices.
Where it falls short:
- 55 lb is a two-hand lift
- Only marginally lighter than heavier rivals
| Spec | EcoFlow DELTA 2 | EcoFlow DELTA 3 Max |
|---|---|---|
| Price | $899 | $1099 |
| Capacity | 1024 Wh | 2048 Wh |
| Continuous output | 1800 W | 2400 W |
| Surge output | 2200 W | 4800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 4,000 |
| Weight (lighter wins) | 27 lb | 55.1 lb |
| Max solar | 500 W | 1000 W |
| Recharge time (faster wins) | 1h 20m | 1h 22m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 2 | EcoFlow DELTA 3 Max |
|---|---|---|
| Refrigerator | 14.5 hrs | 29.0 hrs |
| Mini fridge | 27.6 hrs | 55.3 hrs |
| Chest freezer | 10.9 hrs | 21.8 hrs |
| CPAP machine | 21.8 hrs | 43.5 hrs |
| Sump pump | ❌ | 2.2 hrs |