EcoFlow DELTA 2 Max vs EcoFlow RIVER 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 RIVER 3 costs $1360 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 2 Max holds 736% more energy (2048Wh vs 245Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 2 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 42.2 lb lighter (7.8 lb vs 50 lb).
EcoFlow DELTA 2 Max
The surge sleeper. At 4800W it starts loads that stations twice its price can't — and most spec sheets bury that number behind the X-Boost figure.
Best for: Home backup where something with a compressor — fridge, freezer, window AC — has to start reliably.
Where it falls short:
- 50 lb is heavy for its capacity
- Marketing leads with the 3400W X-Boost number, which understates it
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
| Spec | EcoFlow DELTA 2 Max | EcoFlow RIVER 3 |
|---|---|---|
| Price | $1599 | $239 |
| Capacity | 2048 Wh | 245 Wh |
| Continuous output | 2400 W | 300 W |
| Surge output | 4800 W | 600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 50 lb | 7.8 lb |
| Max solar | 1000 W | 110 W |
| Recharge time (faster wins) | 1h 30m | 1h |
Runtime head-to-head
| Appliance | EcoFlow DELTA 2 Max | EcoFlow RIVER 3 |
|---|---|---|
| Refrigerator | 29.0 hrs | ❌ |
| Mini fridge | 55.3 hrs | 6.6 hrs |
| Chest freezer | 21.8 hrs | ❌ |
| CPAP machine | 43.5 hrs | 5.2 hrs |
| Sump pump | 2.2 hrs | ❌ |