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EcoFlow RIVER 2vsEcoFlow DELTA Pro 3

Both the EcoFlow RIVER 2 and EcoFlow DELTA Pro 3 come from EcoFlow, but they target different use cases. The EcoFlow DELTA Pro 3 offers 4,096Wh of capacity — 3,840Wh more than its sibling. Below we break down every specification to help you decide which EcoFlow model fits your power needs.

EcoFlow RIVER 2

EcoFlow RIVER 2

EcoFlow

$178.99

Buy on Amazon
EcoFlow DELTA Pro 3

EcoFlow DELTA Pro 3

EcoFlow

$2,299

Buy on Amazon

Specifications Comparison

Capacity
256 Wh
4,096 Wh
Continuous Output
300 W
4,000 W
Surge Power
600 W
8,000 W
Battery Type
LiFePO4
LiFePO4
Cycle Life
3,000 cycles
4,000 cycles
Charge Time
60 min
50 min (0-80%)
Weight
7.7 lbs
113.5 lbs
Dimensions
9.6 x 8.5 x 5.9 in
27.3 x 13.4 x 16.1 in
Price
$178.99
$2,299
Rating
4.3/5
4.5/5

Key Differences Explained

Battery Capacity

The EcoFlow DELTA Pro 3 packs 4,096Wh — 16.0x the EcoFlow RIVER 2's 256Wh. That extra 3,840Wh means significantly longer runtime for appliances like mini-fridges, CPAP machines, or power tools.

Output Power

With 4,000W continuous output, the EcoFlow DELTA Pro 3 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 $0.56/Wh, the EcoFlow DELTA Pro 3 offers 20% 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 105.8 lbs lighter than the EcoFlow DELTA Pro 3 (113.5 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 DELTA Pro 3 wins 4 out of 7 comparison categories against the EcoFlow RIVER 2's 2. It stands out with 4,096Wh capacity and 4,000W output at $2,299. However, the EcoFlow RIVER 2 may still be the better choice if budget is your top priority.

Choose EcoFlow RIVER 2 if...

  • Budget is a priority — save $2,120.01 compared to the EcoFlow DELTA Pro 3
  • Portability matters — at 7.7 lbs, it's 105.8 lbs lighter
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Choose EcoFlow DELTA Pro 3 if...

  • You need maximum battery capacity — 4,096Wh gives you 1500% more runtime than the EcoFlow RIVER 2
  • You need to power high-wattage appliances up to 4,000W
  • Long-term durability is important — 4,000 cycle lifespan
Read Full Review

Frequently Asked Questions

Which is better, EcoFlow RIVER 2 or EcoFlow DELTA Pro 3?
It depends on your needs. The EcoFlow RIVER 2 offers 256Wh capacity with 300W output at around $178.99. The EcoFlow DELTA Pro 3 provides 4,096Wh and 4,000W for about $2,299. Choose the EcoFlow DELTA Pro 3 for more capacity, or the EcoFlow RIVER 2 for better value.
Can the EcoFlow RIVER 2 or EcoFlow DELTA Pro 3 power a refrigerator?
A typical residential refrigerator draws 100-400W running and 1,200W surge. The EcoFlow RIVER 2 (300W continuous, 600W surge) may struggle with larger fridges. The EcoFlow DELTA Pro 3 (4,000W, 8,000W surge) can handle most fridges.
How long will the EcoFlow RIVER 2 and EcoFlow DELTA Pro 3 last on a single charge?
Runtime depends on your load. At 100W draw: the EcoFlow RIVER 2 (256Wh) runs approximately 2.2 hours, while the EcoFlow DELTA Pro 3 (4,096Wh) runs about 34.8 hours. At 500W draw: 0.4 hours vs 7.0 hours respectively (accounting for ~85% inverter efficiency).

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