EcoFlow DELTA 2 vs EcoFlow DELTA 3
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 costs $250 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 has 1400W more surge headroom (3600W vs 2200W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 2 is 1.7 lb lighter (27 lb vs 28.7 lb).
- EcoFlow DELTA 3 is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
We'd skip the EcoFlow DELTA 2 in this matchup. It costs $250 more than the EcoFlow DELTA 3 while matching or trailing it on capacity, surge and cycle life — there's no spec here that justifies the premium.
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
The 1kWh class got a serious upgrade here. 3600W surge at $649 beats the older DELTA 2 on every axis that matters.
Best for: Anyone about to buy a DELTA 2 — this is the same money for materially better specs.
Where it falls short:
- Still only 1024Wh
- Solar input unchanged at 500W
| Spec | EcoFlow DELTA 2 | EcoFlow DELTA 3 |
|---|---|---|
| Price | $899 | $649 |
| Capacity | 1024 Wh | 1024 Wh |
| Continuous output | 1800 W | 1800 W |
| Surge output | 2200 W | 3600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 4,000 |
| Weight (lighter wins) | 27 lb | 28.7 lb |
| Max solar | 500 W | 500 W |
| Recharge time (faster wins) | 1h 20m | 56 min |
Runtime head-to-head
| Appliance | EcoFlow DELTA 2 | EcoFlow DELTA 3 |
|---|---|---|
| Refrigerator | 14.5 hrs | 14.5 hrs |
| Mini fridge | 27.6 hrs | 27.6 hrs |
| Chest freezer | 10.9 hrs | 10.9 hrs |
| CPAP machine | 21.8 hrs | 21.8 hrs |
| Sump pump | ❌ | 1.1 hrs |