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Anker SOLIX F3800vsEcoFlow RIVER 2

The EcoFlow RIVER 2 ($178.99) and Anker SOLIX F3800 ($1,898.99) sit in different price brackets, with a $1,720 gap between them. Is the Anker SOLIX F3800's 3,840Wh capacity and 6,000W output worth the premium over the EcoFlow RIVER 2's 256Wh/300W? We compare every spec below.

Anker SOLIX F3800

Anker SOLIX F3800

Anker

$1,898.99

Buy on Amazon
EcoFlow RIVER 2

EcoFlow RIVER 2

EcoFlow

$178.99

Buy on Amazon

Specifications Comparison

Capacity
3,840 Wh
256 Wh
Continuous Output
6,000 W
300 W
Surge Power
9,000 W
600 W
Battery Type
LiFePO4
LiFePO4
Cycle Life
3,000 cycles
3,000 cycles
Charge Time
1.5 hours
60 min
Weight
132 lbs
7.7 lbs
Dimensions
23.3 x 13.4 x 16.3 in
9.6 x 8.5 x 5.9 in
Price
$1,898.99
$178.99
Rating
4.2/5
4.3/5

Key Differences Explained

Battery Capacity

The Anker SOLIX F3800 packs 3,840Wh — 15.0x the EcoFlow RIVER 2's 256Wh. That extra 3,584Wh means significantly longer runtime for appliances like mini-fridges, CPAP machines, or power tools.

Output Power

With 6,000W continuous output, the Anker SOLIX F3800 can handle heavier loads than the EcoFlow RIVER 2's 300W. This matters for high-draw appliances like microwaves, hair dryers, or power tools that demand consistent wattage.

Cost per Watt-Hour

At $0.49/Wh, the Anker SOLIX F3800 offers 29% better value per watt-hour than the EcoFlow RIVER 2 ($0.70/Wh). This metric helps you understand the raw cost of stored energy, regardless of other features.

Portability

At 7.7 lbs, the EcoFlow RIVER 2 is 124.3 lbs lighter than the Anker SOLIX F3800 (132 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 EcoFlow RIVER 2 wins 3 out of 7 comparison categories against the Anker SOLIX F3800's 2. It stands out with 256Wh capacity and 300W output at $178.99. However, the Anker SOLIX F3800 may still be the better choice if you prefer the Anker ecosystem.

Choose Anker SOLIX F3800 if...

  • You need maximum battery capacity — 3,840Wh gives you 1400% more runtime than the EcoFlow RIVER 2
  • You need to power high-wattage appliances up to 6,000W
Read Full Review

Choose EcoFlow RIVER 2 if...

  • Budget is a priority — save $1,720 compared to the Anker SOLIX F3800
  • Portability matters — at 7.7 lbs, it's 124.3 lbs lighter
Read Full Review

Frequently Asked Questions

Which is better, Anker SOLIX F3800 or EcoFlow RIVER 2?
It depends on your needs. The Anker SOLIX F3800 offers 3,840Wh capacity with 6,000W output at around $1,898.99. The EcoFlow RIVER 2 provides 256Wh and 300W for about $178.99. Choose the Anker SOLIX F3800 for more capacity, or the EcoFlow RIVER 2 for better value.
Can the Anker SOLIX F3800 or EcoFlow RIVER 2 power a refrigerator?
A typical residential refrigerator draws 100-400W running and 1,200W surge. The Anker SOLIX F3800 (6,000W continuous, 9,000W surge) can handle most fridges. The EcoFlow RIVER 2 (300W, 600W surge) is better suited for mini-fridges or smaller appliances.
How long will the Anker SOLIX F3800 and EcoFlow RIVER 2 last on a single charge?
Runtime depends on your load. At 100W draw: the Anker SOLIX F3800 (3,840Wh) runs approximately 32.6 hours, while the EcoFlow RIVER 2 (256Wh) runs about 2.2 hours. At 500W draw: 6.5 hours vs 0.4 hours respectively (accounting for ~85% inverter efficiency).

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