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Anker SOLIX C300vsEcoFlow RIVER 2 Pro

Choosing between the Anker Anker SOLIX C300 and EcoFlow EcoFlow RIVER 2 Pro comes down to your priorities: the Anker SOLIX C300 delivers 288Wh with 300W continuous output, while the EcoFlow RIVER 2 Pro offers 768Wh and 800W. We analyze capacity, output power, battery longevity, portability, and value to help you pick the right one.

Anker SOLIX C300

Anker SOLIX C300

Anker

$249.99

Buy on Amazon
EcoFlow RIVER 2 Pro

EcoFlow RIVER 2 Pro

EcoFlow

$315

Buy on Amazon

Specifications Comparison

Capacity
288 Wh
768 Wh
Continuous Output
300 W
800 W
Surge Power
600 W
1,600 W
Battery Type
LiFePO4
LiFePO4
Cycle Life
3,000 cycles
3,000 cycles
Charge Time
1.5 hours
70 min
Weight
8.2 lbs
17.4 lbs
Dimensions
8.5 x 5.1 x 7.9 in
10.6 x 10.2 x 8.9 in
Price
$249.99
$315
Rating
4.7/5
4.5/5

Key Differences Explained

Battery Capacity

The EcoFlow RIVER 2 Pro packs 768Wh — 2.7x the Anker SOLIX C300's 288Wh. That extra 480Wh means significantly longer runtime for appliances like mini-fridges, CPAP machines, or power tools.

Output Power

With 800W continuous output, the EcoFlow RIVER 2 Pro can handle heavier loads than the Anker SOLIX C300's 300W. This matters for high-draw appliances like microwaves, hair dryers, or power tools that demand consistent wattage.

Cost per Watt-Hour

At $0.41/Wh, the EcoFlow RIVER 2 Pro offers 53% better value per watt-hour than the Anker SOLIX C300 ($0.87/Wh). This metric helps you understand the raw cost of stored energy, regardless of other features.

Portability

At 8.2 lbs, the Anker SOLIX C300 is 9.2 lbs lighter than the EcoFlow RIVER 2 Pro (17.4 lbs). For camping, tailgating, or emergency kits where you need to carry your power station, that weight difference adds up quickly.

The Bottom Line

The Anker SOLIX C300 wins 3 out of 7 comparison categories against the EcoFlow RIVER 2 Pro's 2. It stands out with 288Wh capacity and 300W output at $249.99. However, the EcoFlow RIVER 2 Pro may still be the better choice if you prefer the EcoFlow ecosystem.

Choose Anker SOLIX C300 if...

  • Budget is a priority — save $65.01 compared to the EcoFlow RIVER 2 Pro
  • Portability matters — at 8.2 lbs, it's 9.2 lbs lighter
Read Full Review

Choose EcoFlow RIVER 2 Pro if...

  • You need maximum battery capacity — 768Wh gives you 167% more runtime than the Anker SOLIX C300
  • You need to power high-wattage appliances up to 800W
Read Full Review

Frequently Asked Questions

Which is better, Anker SOLIX C300 or EcoFlow RIVER 2 Pro?
It depends on your needs. The Anker SOLIX C300 offers 288Wh capacity with 300W output at around $249.99. The EcoFlow RIVER 2 Pro provides 768Wh and 800W for about $315. Choose the EcoFlow RIVER 2 Pro for more capacity, or the Anker SOLIX C300 for better value.
Can the Anker SOLIX C300 or EcoFlow RIVER 2 Pro power a refrigerator?
A typical residential refrigerator draws 100-400W running and 1,200W surge. The Anker SOLIX C300 (300W continuous, 600W surge) may struggle with larger fridges. The EcoFlow RIVER 2 Pro (800W, 1,600W surge) can handle most fridges.
How long will the Anker SOLIX C300 and EcoFlow RIVER 2 Pro last on a single charge?
Runtime depends on your load. At 100W draw: the Anker SOLIX C300 (288Wh) runs approximately 2.4 hours, while the EcoFlow RIVER 2 Pro (768Wh) runs about 6.5 hours. At 500W draw: 0.5 hours vs 1.3 hours respectively (accounting for ~85% inverter efficiency).

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