EcoFlow RIVER 3 Plus
286 Wh · 600 W output · LiFePO4 · $329
✅ Specs verified against the manufacturer's official listing — source · Last checked
Our verdict
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.
What we like
- 600W handles small appliances the River 3 can't
- Expandable to 858Wh
- Still under 10 lb
Where it falls short
- 286Wh alone is a single evening of real use
- 220W solar input is modest
Full specifications
| Capacity | 286 Wh |
|---|---|
| Continuous output | 600 W |
| Surge output | 1200 W |
| Battery chemistry | LiFePO4 |
| Rated cycles | 3,000 |
| Weight | 9.9 lb |
| Max solar input | 220 W |
| Recharge (AC) | 1h |
| Expandable | Yes |
| Warranty | 5 years |
What can the EcoFlow RIVER 3 Plus run?
| Appliance | Can start it? | Est. runtime |
|---|---|---|
| Refrigerator | ✅ Yes | 4.1 hrs |
| Mini fridge | ✅ Yes | 7.7 hrs |
| Chest freezer | ✅ Yes | 3.0 hrs |
| CPAP machine | ✅ Yes | 6.1 hrs |
| Sump pump | ❌ Surge too high | — |
| Well pump (1/2 HP) | ❌ Surge too high | — |
| Space heater | ❌ Surge too high | — |
| Window AC (8k BTU) | ❌ Surge too high | — |
| Microwave | ❌ Surge too high | — |
| Coffee maker | ❌ Surge too high | — |
| TV (55" LED) | ✅ Yes | 2.4 hrs |
| Laptop | ✅ Yes | 3.7 hrs |
| Phone charger | ✅ Yes | 12.2 hrs |
| CPAP + humidifier | ✅ Yes | 2.7 hrs |
| Fridge plus essentials | ✅ Yes | 2.4 hrs |
| 12V RV fridge | ✅ Yes | 13.5 hrs |
| Starlink | ✅ Yes | 4.1 hrs |
| Electric blanket | ✅ Yes | 8.1 hrs |
Runtime = (capacity × 0.85 inverter efficiency) ÷ appliance watts. Refrigerator assumes a 40% compressor duty cycle. Real-world results vary.