EcoFlow RIVER 3 Plus vs Growatt INFINITY 1500
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 3 Plus costs $770 less. Whether that gap is worth closing depends on what you need to run.
- Growatt INFINITY 1500 holds 429% more energy (1512Wh vs 286Wh), so it runs the same load proportionally longer.
- Growatt INFINITY 1500 has 1800W more surge headroom (3000W vs 1200W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 3 Plus is 27.6 lb lighter (9.9 lb vs 37.5 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.
Doubles the River 3's output for $90 more, and adds an expansion battery port. The better buy of the two unless weight is everything.
Best for: Campers who want one unit that covers devices plus the occasional small appliance.
Where it falls short:
- 286Wh alone is a single evening of real use
- 220W solar input is modest
A capable mid-size that flies under the radar. Solid 2,000W output and fast charging, let down mainly by a shorter warranty than the big brands.
Best for: Value hunters who want 1.5kWh and don't need the longest warranty.
Where it falls short:
- 3,000W surge is modest for the output
- 3-year warranty vs 5 from the majors
| Spec | EcoFlow RIVER 3 Plus | Growatt INFINITY 1500 |
|---|---|---|
| Price | $329 | $1099 |
| Capacity | 286 Wh | 1512 Wh |
| Continuous output | 600 W | 2000 W |
| Surge output | 1200 W | 3000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 9.9 lb | 37.5 lb |
| Max solar | 220 W | 800 W |
| Recharge time (faster wins) | 1h | 1h 50m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 3 Plus | Growatt INFINITY 1500 |
|---|---|---|
| Refrigerator | 4.1 hrs | 21.4 hrs |
| Mini fridge | 7.7 hrs | 40.8 hrs |
| Chest freezer | 3.0 hrs | 16.1 hrs |
| CPAP machine | 6.1 hrs | 32.1 hrs |
| Sump pump | ❌ | ❌ |