Skip to main content

Disclosure: We may earn a commission from Amazon links on this page. This helps support our independent testing.

WattsGeek
Back to Reviews

EcoFlow DELTA 3vsEcoFlow RIVER 2

Both the EcoFlow DELTA 3 and EcoFlow RIVER 2 come from EcoFlow, but they target different use cases. The EcoFlow DELTA 3 offers 1,024Wh of capacity — 768Wh more than its sibling. Below we break down every specification to help you decide which EcoFlow model fits your power needs.

EcoFlow DELTA 3

EcoFlow DELTA 3

EcoFlow

$499

Buy on Amazon
EcoFlow RIVER 2

EcoFlow RIVER 2

EcoFlow

$178.99

Buy on Amazon

Specifications Comparison

Capacity
1,024 Wh
256 Wh
Continuous Output
1,800 W
300 W
Surge Power
2,700 W
600 W
Battery Type
LiFePO4
LiFePO4
Cycle Life
4,000 cycles
3,000 cycles
Charge Time
56 min (0-100%)
60 min
Weight
27.6 lbs
7.7 lbs
Dimensions
15.7 x 8.5 x 10.6 in
9.6 x 8.5 x 5.9 in
Price
$499
$178.99
Rating
4.8/5
4.3/5

Key Differences Explained

Battery Capacity

The EcoFlow DELTA 3 packs 1,024Wh — 4.0x the EcoFlow RIVER 2's 256Wh. That extra 768Wh means significantly longer runtime for appliances like mini-fridges, CPAP machines, or power tools.

Output Power

With 1,800W continuous output, the EcoFlow DELTA 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 $0.49/Wh, the EcoFlow DELTA 3 offers 30% 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 19.9 lbs lighter than the EcoFlow DELTA 3 (27.6 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 3 wins 4 out of 7 comparison categories against the EcoFlow RIVER 2's 2. It stands out with 1,024Wh capacity and 1,800W output at $499. However, the EcoFlow RIVER 2 may still be the better choice if budget is your top priority.

Choose EcoFlow DELTA 3 if...

  • You need maximum battery capacity — 1,024Wh gives you 300% more runtime than the EcoFlow RIVER 2
  • You need to power high-wattage appliances up to 1,800W
  • Long-term durability is important — 4,000 cycle lifespan
Read Full Review

Choose EcoFlow RIVER 2 if...

  • Budget is a priority — save $320.01 compared to the EcoFlow DELTA 3
  • Portability matters — at 7.7 lbs, it's 19.9 lbs lighter
Read Full Review

Frequently Asked Questions

Which is better, EcoFlow DELTA 3 or EcoFlow RIVER 2?
It depends on your needs. The EcoFlow DELTA 3 offers 1,024Wh capacity with 1,800W output at around $499. The EcoFlow RIVER 2 provides 256Wh and 300W for about $178.99. Choose the EcoFlow DELTA 3 for more capacity, or the EcoFlow RIVER 2 for better value.
Can the EcoFlow DELTA 3 or EcoFlow RIVER 2 power a refrigerator?
A typical residential refrigerator draws 100-400W running and 1,200W surge. The EcoFlow DELTA 3 (1,800W continuous, 2,700W 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 EcoFlow DELTA 3 and EcoFlow RIVER 2 last on a single charge?
Runtime depends on your load. At 100W draw: the EcoFlow DELTA 3 (1,024Wh) runs approximately 8.7 hours, while the EcoFlow RIVER 2 (256Wh) runs about 2.2 hours. At 500W draw: 1.7 hours vs 0.4 hours respectively (accounting for ~85% inverter efficiency).

Related Comparisons