EcoFlow RIVER 3 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 RIVER 3 costs $860 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Max holds 736% more energy (2048Wh vs 245Wh), 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 3 is 47.3 lb lighter (7.8 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 RIVER 3
A glorified power bank with AC outlets — and that's fine if that's what you need. 245Wh runs devices, not appliances.
Best for: Weekend campers charging phones, cameras and a laptop.
Where it falls short:
- 300W output rules out anything with a heating element
- No expansion path
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 RIVER 3 | EcoFlow DELTA 3 Max |
|---|---|---|
| Price | $239 | $1099 |
| Capacity | 245 Wh | 2048 Wh |
| Continuous output | 300 W | 2400 W |
| Surge output | 600 W | 4800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 4,000 |
| Weight (lighter wins) | 7.8 lb | 55.1 lb |
| Max solar | 110 W | 1000 W |
| Recharge time (faster wins) | 1h | 1h 22m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 3 | EcoFlow DELTA 3 Max |
|---|---|---|
| Refrigerator | ❌ | 29.0 hrs |
| Mini fridge | 6.6 hrs | 55.3 hrs |
| Chest freezer | ❌ | 21.8 hrs |
| CPAP machine | 5.2 hrs | 43.5 hrs |
| Sump pump | ❌ | 2.2 hrs |