EcoFlow RIVER 3 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 $60 less. Whether that gap is worth closing depends on what you need to run.
- Anker SOLIX C300 holds 18% more energy (288Wh vs 245Wh), so it runs the same load proportionally longer.
- EcoFlow RIVER 3 is 0.8 lb lighter (7.8 lb vs 8.6 lb).
We'd skip the EcoFlow RIVER 3 in this matchup. It costs $60 more than the Anker SOLIX C300 while matching or trailing it on capacity, surge and cycle life — there's no spec here that justifies the premium.
A glorified power bank with AC outlets — and that's fine if that's what you need. 245Wh runs devices, not appliances.
Best for: Weekend campers charging phones, cameras and a laptop.
Where it falls short:
- 300W output rules out anything with a heating element
- No expansion path
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 | Anker SOLIX C300 |
|---|---|---|
| Price | $239 | $179 |
| Capacity | 245 Wh | 288 Wh |
| Continuous output | 300 W | 300 W |
| Surge output | 600 W | 600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 7.8 lb | 8.6 lb |
| Max solar | 110 W | 100 W |
| Recharge time (faster wins) | 1h | 1h |
Runtime head-to-head
| Appliance | EcoFlow RIVER 3 | Anker SOLIX C300 |
|---|---|---|
| Refrigerator | ❌ | ❌ |
| Mini fridge | 6.6 hrs | 7.8 hrs |
| Chest freezer | ❌ | ❌ |
| CPAP machine | 5.2 hrs | 6.1 hrs |
| Sump pump | ❌ | ❌ |