Anker SOLIX C300 vs EcoFlow RIVER 2
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 $20 less. Whether that gap is worth closing depends on what you need to run.
- Anker SOLIX C300 holds 13% more energy (288Wh vs 256Wh), so it runs the same load proportionally longer.
- EcoFlow RIVER 2 is 0.9 lb lighter (7.7 lb vs 8.6 lb).
We'd skip the EcoFlow RIVER 2 in this matchup. It costs $20 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.
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
The cheapest way into LiFePO4. 256Wh is a device charger, but at under $200 with a 60-minute recharge it's hard to argue with.
Best for: Budget campers who just need to keep phones, cameras and a laptop alive.
Where it falls short:
- 300W output runs devices only
- 256Wh is a single evening of real use
| Spec | Anker SOLIX C300 | EcoFlow RIVER 2 |
|---|---|---|
| Price | $179 | $199 |
| Capacity | 288 Wh | 256 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) | 8.6 lb | 7.7 lb |
| Max solar | 100 W | 110 W |
| Recharge time (faster wins) | 1h | 1h |
Runtime head-to-head
| Appliance | Anker SOLIX C300 | EcoFlow RIVER 2 |
|---|---|---|
| Refrigerator | ❌ | ❌ |
| Mini fridge | 7.8 hrs | 6.9 hrs |
| Chest freezer | ❌ | ❌ |
| CPAP machine | 6.1 hrs | 5.4 hrs |
| Sump pump | ❌ | ❌ |