EcoFlow DELTA 2 Max vs EcoFlow RIVER 2 Pro
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 Pro costs $1000 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 2 Max holds 167% more energy (2048Wh vs 768Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 2 Max has 3200W more surge headroom (4800W vs 1600W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 2 Pro is 33.0 lb lighter (17 lb vs 50 lb).
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
The one you actually carry. At 17 lb it is light enough for one hand, yet unlike the true pocket units it has the 800W of output needed to run small appliances rather than just charge devices.
Best for: Backpackers, photographers and festival-goers who care about weight above all.
Where it falls short:
- 800W output limits you to electronics and small loads
- 220W solar input means slow off-grid top-ups
| Spec | EcoFlow DELTA 2 Max | EcoFlow RIVER 2 Pro |
|---|---|---|
| Price | $1599 | $599 |
| Capacity | 2048 Wh | 768 Wh |
| Continuous output | 2400 W | 800 W |
| Surge output | 4800 W | 1600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 50 lb | 17 lb |
| Max solar | 1000 W | 220 W |
| Recharge time (faster wins) | 1h 30m | 1h 10m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 2 Max | EcoFlow RIVER 2 Pro |
|---|---|---|
| Refrigerator | 29.0 hrs | 10.9 hrs |
| Mini fridge | 55.3 hrs | 20.7 hrs |
| Chest freezer | 21.8 hrs | 8.2 hrs |
| CPAP machine | 43.5 hrs | 16.3 hrs |
| Sump pump | 2.2 hrs | ❌ |