EcoFlow RIVER 2 Pro 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 2 Pro costs $500 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Max holds 167% more energy (2048Wh vs 768Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 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 38.1 lb lighter (17 lb vs 55.1 lb).
- EcoFlow DELTA 3 Max is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
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
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 2 Pro | EcoFlow DELTA 3 Max |
|---|---|---|
| Price | $599 | $1099 |
| Capacity | 768 Wh | 2048 Wh |
| Continuous output | 800 W | 2400 W |
| Surge output | 1600 W | 4800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 4,000 |
| Weight (lighter wins) | 17 lb | 55.1 lb |
| Max solar | 220 W | 1000 W |
| Recharge time (faster wins) | 1h 10m | 1h 22m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 2 Pro | EcoFlow DELTA 3 Max |
|---|---|---|
| Refrigerator | 10.9 hrs | 29.0 hrs |
| Mini fridge | 20.7 hrs | 55.3 hrs |
| Chest freezer | 8.2 hrs | 21.8 hrs |
| CPAP machine | 16.3 hrs | 43.5 hrs |
| Sump pump | ❌ | 2.2 hrs |