Anker SOLIX C300 vs EcoFlow RIVER 2 (2026)
The short answer
More capacity? Anker SOLIX C300
More AC watts? Tied
Anker SOLIX C300 is 288Wh and 300W. EcoFlow RIVER 2 is 256Wh and 300W.
Choose this if
Pick the Anker SOLIX C300 if
- You want 288Wh and 300W.
Choose this if
Pick the EcoFlow RIVER 2 if
- You want 256Wh and 300W.
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Key specs
| Anker SOLIX C300 | EcoFlow RIVER 2 | |
|---|---|---|
| Capacity | 288Wh | 256Wh |
| Rated AC | 300W | 300W |
| Weight | About 8.2 lb | About 7.8 lb |
| Warranty | 5 years | 5 years |
Capacity and AC watts from Amazon listing titles checked October 8, 2026. Weight and warranty from maker pages where checked; otherwise not stated.
What it can run
| Load | Anker SOLIX C300 | EcoFlow RIVER 2 |
|---|---|---|
| Phone charges | ✓ YESAbout 15Wh each. | ✓ YESAbout 15Wh each. |
| Laptop, 60W | ✓ YESAbout 3.7 hours. | ✓ YESAbout 3.3 hours. |
| Camp lights, 10W | ✓ YESAbout 22.0 hours. | ✓ YESAbout 19.6 hours. |
| Portable fan, 30W | ✓ YESAbout 7.3 hours. | ✓ YESAbout 6.5 hours. |
| CPAP, 40W | ✓ YESAbout 5.5 hours. | ✓ YESAbout 4.9 hours. |
| 12V cooler, 45W average | ✓ YESAbout 4.9 hours. | ✓ YESAbout 4.4 hours. |
| Fridge, 80W average | ✓ YESAbout 2.8 hours. | ✓ YESAbout 2.4 hours. |
| Coffee maker, 1000W | NO1000W is over 300W. | NO1000W is over 300W. |
| 12V blanket, 50W | ✓ YESAbout 4.4 hours. | ✓ YESAbout 3.9 hours. |
Hours = capacity × 0.85 × 0.90 ÷ load. Estimates, not a test.
Skip it if
Skip the Anker SOLIX C300
Skip it if 288Wh or 300W is not enough.
Skip the EcoFlow RIVER 2
Skip it if 256Wh or 300W is not enough.
Questions about this pair
Can it run a heater?
Short burst only. A 750W heater will not heat a tent or a room overnight. Use a 12V blanket for overnight.
Which one runs longer?
The unit with more watt-hours. The chart above uses the same loads on both so you can see the gap.
Can it run a heater overnight?
No. A 750W heater is a short burst. Use a 12V blanket for overnight in a tent.
Are these the same class?
They are close enough to compare. Check the capacity row. A gap over about 25% means one is a size step up.