EcoFlow RIVER 2 Pro vs EcoFlow DELTA 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 2 Pro costs $50 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 holds 33% more energy (1024Wh vs 768Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 has 2000W more surge headroom (3600W vs 1600W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 2 Pro is 11.7 lb lighter (17 lb vs 28.7 lb).
- EcoFlow DELTA 3 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 1kWh class got a serious upgrade here. 3600W surge at $649 beats the older DELTA 2 on every axis that matters.
Best for: Anyone about to buy a DELTA 2 — this is the same money for materially better specs.
Where it falls short:
- Still only 1024Wh
- Solar input unchanged at 500W
| Spec | EcoFlow RIVER 2 Pro | EcoFlow DELTA 3 |
|---|---|---|
| Price | $599 | $649 |
| Capacity | 768 Wh | 1024 Wh |
| Continuous output | 800 W | 1800 W |
| Surge output | 1600 W | 3600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 4,000 |
| Weight (lighter wins) | 17 lb | 28.7 lb |
| Max solar | 220 W | 500 W |
| Recharge time (faster wins) | 1h 10m | 56 min |
Runtime head-to-head
| Appliance | EcoFlow RIVER 2 Pro | EcoFlow DELTA 3 |
|---|---|---|
| Refrigerator | 10.9 hrs | 14.5 hrs |
| Mini fridge | 20.7 hrs | 27.6 hrs |
| Chest freezer | 8.2 hrs | 10.9 hrs |
| CPAP machine | 16.3 hrs | 21.8 hrs |
| Sump pump | ❌ | 1.1 hrs |