EcoFlow RIVER 2 Pro vs EcoFlow DELTA Pro 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 $3100 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA Pro 3 holds 433% more energy (4096Wh vs 768Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA Pro 3 has 6400W more surge headroom (8000W vs 1600W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 2 Pro is 96.0 lb lighter (17 lb vs 113 lb).
- EcoFlow DELTA Pro 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 most complete large unit here. 4096Wh, 4000W, 8000W surge and 2600W of solar — it does everything the F3800 does with less weight.
Best for: Whole-home backup buyers who want maximum solar recharge speed.
Where it falls short:
- $3,699 is a serious investment
- Overkill unless you're backing up a whole home
| Spec | EcoFlow RIVER 2 Pro | EcoFlow DELTA Pro 3 |
|---|---|---|
| Price | $599 | $3699 |
| Capacity | 768 Wh | 4096 Wh |
| Continuous output | 800 W | 4000 W |
| Surge output | 1600 W | 8000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 4,000 |
| Weight (lighter wins) | 17 lb | 113 lb |
| Max solar | 220 W | 2600 W |
| Recharge time (faster wins) | 1h 10m | 1h 40m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 2 Pro | EcoFlow DELTA Pro 3 |
|---|---|---|
| Refrigerator | 10.9 hrs | 58.0 hrs |
| Mini fridge | 20.7 hrs | 110.5 hrs |
| Chest freezer | 8.2 hrs | 43.5 hrs |
| CPAP machine | 16.3 hrs | 87.0 hrs |
| Sump pump | ❌ | 4.4 hrs |