EcoFlow DELTA 3 Max vs EcoFlow RIVER 2
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 RIVER 2 costs $900 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Max holds 700% more energy (2048Wh vs 256Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Max has 4200W more surge headroom (4800W vs 600W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 2 is 47.4 lb lighter (7.7 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 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
EcoFlow RIVER 2
The cheapest way into LiFePO4. 256Wh is a device charger, but at under $200 with a 60-minute recharge it's hard to argue with.
Best for: Budget campers who just need to keep phones, cameras and a laptop alive.
Where it falls short:
- 300W output runs devices only
- 256Wh is a single evening of real use
| Spec | EcoFlow DELTA 3 Max | EcoFlow RIVER 2 |
|---|---|---|
| Price | $1099 | $199 |
| Capacity | 2048 Wh | 256 Wh |
| Continuous output | 2400 W | 300 W |
| Surge output | 4800 W | 600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 55.1 lb | 7.7 lb |
| Max solar | 1000 W | 110 W |
| Recharge time (faster wins) | 1h 22m | 1h |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Max | EcoFlow RIVER 2 |
|---|---|---|
| Refrigerator | 29.0 hrs | ❌ |
| Mini fridge | 55.3 hrs | 6.9 hrs |
| Chest freezer | 21.8 hrs | ❌ |
| CPAP machine | 43.5 hrs | 5.4 hrs |
| Sump pump | 2.2 hrs | ❌ |