EcoFlow RIVER 3 Plus vs Anker SOLIX C300
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
Anker SOLIX C300 costs $150 less. Whether that gap is worth closing depends on what you need to run.
- Anker SOLIX C300 holds 1% more energy (288Wh vs 286Wh), so it runs the same load proportionally longer.
- EcoFlow RIVER 3 Plus has 600W more surge headroom (1200W vs 600W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker SOLIX C300 is 1.3 lb lighter (8.6 lb vs 9.9 lb).
The EcoFlow RIVER 3 Plus is poor value on paper: 0.87 Wh per dollar versus 1.61 for the Anker SOLIX C300. Only worth it if you specifically need its higher output or 240V capability — otherwise you're paying a large premium per watt-hour.
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
Anker's smallest. 288Wh at $179 with three USB-C ports — aimed squarely at people charging modern devices, not running appliances.
Best for: Content creators and travelers with a bag full of USB-C gear.
Where it falls short:
- 300W output is device-only territory
- 100W solar input
| Spec | EcoFlow RIVER 3 Plus | Anker SOLIX C300 |
|---|---|---|
| Price | $329 | $179 |
| Capacity | 286 Wh | 288 Wh |
| Continuous output | 600 W | 300 W |
| Surge output | 1200 W | 600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 9.9 lb | 8.6 lb |
| Max solar | 220 W | 100 W |
| Recharge time (faster wins) | 1h | 1h |
Runtime head-to-head
| Appliance | EcoFlow RIVER 3 Plus | Anker SOLIX C300 |
|---|---|---|
| Refrigerator | 4.1 hrs | ❌ |
| Mini fridge | 7.7 hrs | 7.8 hrs |
| Chest freezer | 3.0 hrs | ❌ |
| CPAP machine | 6.1 hrs | 6.1 hrs |
| Sump pump | ❌ | ❌ |