EcoFlow RIVER 2 Pro vs Growatt VITA 550
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
Growatt VITA 550 costs $200 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow RIVER 2 Pro holds 43% more energy (768Wh vs 538Wh), so it runs the same load proportionally longer.
- EcoFlow RIVER 2 Pro has 400W more surge headroom (1600W vs 1200W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 2 Pro is 0.6 lb lighter (17 lb vs 17.6 lb).
Neither of these will start a sump pump or well pump — both surge below the ~3,400W those motors need. If home backup with pumps is your use case, look at higher-surge models instead of either of these.
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
A tidy half-kWh unit with fast charging and a 1,200W surge that lets it start small appliances a 600W rating wouldn't suggest.
Best for: Campers who want fast charging and a bit of surge headroom at half a kWh.
Where it falls short:
- 538Wh is weekend-scale
- 3-year warranty
| Spec | EcoFlow RIVER 2 Pro | Growatt VITA 550 |
|---|---|---|
| Price | $599 | $399 |
| Capacity | 768 Wh | 538 Wh |
| Continuous output | 800 W | 600 W |
| Surge output | 1600 W | 1200 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 17 lb | 17.6 lb |
| Max solar | 220 W | 300 W |
| Recharge time (faster wins) | 1h 10m | 1h |
Runtime head-to-head
| Appliance | EcoFlow RIVER 2 Pro | Growatt VITA 550 |
|---|---|---|
| Refrigerator | 10.9 hrs | 7.6 hrs |
| Mini fridge | 20.7 hrs | 14.5 hrs |
| Chest freezer | 8.2 hrs | 5.7 hrs |
| CPAP machine | 16.3 hrs | 11.4 hrs |
| Sump pump | ❌ | ❌ |