Anker SOLIX C300X vs EcoFlow RIVER
Two small power stations, number by number. Neither is ranked above the other. Every spec comes from each maker's manual or product page; tap a station for the source.
- Bigger battery: about the same (288 Wh vs 288 Wh).
- More AC output: EcoFlow RIVER, 600 W vs 300 W.
- Higher surge: EcoFlow RIVER, 1,200 W vs 600 W.
- More solar input: EcoFlow RIVER, 200 W vs 100 W.
- Higher solar voltage limit: Anker SOLIX C300X, 28 V vs 25 V.
- Lighter: Anker SOLIX C300X, 9.1 lb vs 11 lb.
- Lower brand-store price: Anker SOLIX C300X, $300 vs $349.
C300X and RIVER are the same size class: within 0 Wh of each other. C300X is the lightest at 9.1 lb. RIVER takes the most solar at 200 W, so it refills fastest. C300X is the cheapest at $300.
How long they run common devices
| Device | Anker SOLIX C300X | EcoFlow RIVER |
|---|---|---|
| Fridge (60 W) | 4 hours | 4 hours |
| CPAP (40 W) | 6 hours | 6 hours |
| Starlink (100 W) | 2.5 hours | 2.5 hours |
| Laptop (60 W) | 4 hours | 4 hours |
On a full charge, assuming 85% of the battery is usable. Real devices vary; check the label on yours.
Every spec side by side
| Spec |  Anker SOLIX |  EcoFlow |
|---|---|---|
Battery Wh, size | 288 Wh fridge about 4 hours | 288 Wh fridge about 4 hours |
AC output W, continuous | 300 W CPAP, laptops, lights, phones | 600 W Fridge, CPAP, laptops, lights |
Surge W, a second or two | 600 W motor start-ups | 1,200 W motor start-ups |
Solar input W, max | 100 W full in about 4 hours | 200 W full in about 2 hours |
Solar voltage range V, panels must fit | 11 to 28 V 1 panel, or 2 in parallel | 10 to 25 V 1 panel, or 2 in parallel |
Solar inputs count | 1 input XT60 | 1 input Solar input |
Weight lb | 9.1 lb one hand | 11 lb one hand |
Wh per pound battery for the weight | 32 Wh/lb higher is denser | 26 Wh/lb higher is denser |
Price brand store | $300 1.04 $/Wh | $349 1.21 $/Wh |
Price per Wh what you pay for storage | $1.04 lower is better value | $1.21 lower is better value |
| Buy | $300 · Details Brand store, Oct 28, 2026 | $349 · Details Brand store, Oct 28, 2026 |
Which solar panels work with each
Our checker at 20°F, using each maker's voltage and current rules. Tap a verdict for the wiring and cables.
Where to buy
Out of stock at the Anker SOLIX store when we checked
$349 at the EcoFlow store, checked Oct 28, 2026
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