Anker SOLIX C300
288 Wh · 300 W output · LiFePO4 · $179
✅ Specs verified against the manufacturer's official listing — source · Last checked
Our verdict
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.
What we like
- Three USB-C ports, unusual at this size
- 8.6 lb and $179
- 60-minute recharge
Where it falls short
- 300W output is device-only territory
- 100W solar input
Full specifications
| Capacity | 288 Wh |
|---|---|
| Continuous output | 300 W |
| Surge output | 600 W |
| Battery chemistry | LiFePO4 |
| Rated cycles | 3,000 |
| Weight | 8.6 lb |
| Max solar input | 100 W |
| Recharge (AC) | 1h |
| Expandable | No |
| Warranty | 5 years |
What can the Anker SOLIX C300 run?
| Appliance | Can start it? | Est. runtime |
|---|---|---|
| Refrigerator | ❌ Surge too high | — |
| Mini fridge | ✅ Yes | 7.8 hrs |
| Chest freezer | ❌ Surge too high | — |
| 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 | 3.8 hrs |
| Phone charger | ✅ Yes | 12.2 hrs |
| CPAP + humidifier | ✅ Yes | 2.7 hrs |
| Fridge plus essentials | ❌ Surge too high | — |
| 12V RV fridge | ✅ Yes | 13.6 hrs |
| Starlink | ✅ Yes | 4.1 hrs |
| Electric blanket | ✅ Yes | 8.2 hrs |
Runtime = (capacity × 0.85 inverter efficiency) ÷ appliance watts. Refrigerator assumes a 40% compressor duty cycle. Real-world results vary.