EcoFlow Delta 3 vs River 3: Which Portable Power Station is Best?

Aug 12, 2025

If portable power stations were superheroes, the EcoFlow Delta 3 would be the muscle-bound powerhouse, and the River 3 the nimble sidekick. Short answer: Delta 3 wins for heavy-duty needs, River 3 for travel lightweights. Stick around to see which hero saves your day.

Power Output, Capacity, and Battery Technology

Wattage and Watt-hours (W & Wh)

The EcoFlow Delta 3 delivers 1260Wh of battery capacity and an inverter power of 3000W. This makes it ideal for high-demand tasks like powering tools, large appliances, or extended outdoor setups.

The River 3 offers 512Wh and 600W output. It is better suited for smaller devices and lighter, everyday power needs.

EcoFlow portable power station angled view on a white background.

Battery Chemistry and Cycle Life

Both use advanced lithium-ion batteries. The Delta 3 is optimised for higher capacity and longevity, lasting up to 800 cycles before significant capacity drop.

The River 3, at around 500 cycles, strikes a balance between portability and lifespan. This makes it a good choice for less intensive use.

Charging Speed and Methods

AC and Solar Charging Times

Using a wall outlet, the Delta 3 recharges in about 1.3 hours. The River 3 is quicker to fill, taking around 0.8 hours.

For solar charging, the Delta 3 supports up to 1500W input, reaching full charge in roughly 1.8 hours. The River 3 supports up to 420W, taking around 3.5 hours.

Car Charging and Other Inputs

Both can charge via a 12V car port, making them useful for on-the-go replenishment.

They also support multi-charging from solar, AC, and car inputs at the same time for faster results.

EcoFlow portable power station with foldable solar panel on a white background.

Design, Portability, and Expandability

Weight and Dimensions

The Delta 3 weighs 11.9 pounds and measures 10.2 x 7.2 x 8.3 inches.

The River 3 is much lighter at 4.3 pounds and measures 7.9 x 4.9 x 4.6 inches. Both have ergonomic handles, though the Delta 3 is bulkier and better suited to fixed storage spaces. The River 3 is compact enough for backpacks and small bags.

Modular and Expandable Batteries

Both models allow expansion with additional batteries. The Delta 3 offers a wider range of compatible packs, giving more flexibility for extended off-grid use.

Unique Features and Smart Connectivity

UPS Functionality

The Delta 3 is ideal for emergency home backup thanks to its capacity and output, making it effective as a UPS for critical devices.

The River 3 can also handle small-scale backup needs, but it’s better suited to portable and short-term applications.

App Control and Display

Both models have intuitive LCD screens that show battery level, input/output power, and key system stats.

The EcoFlow app works with both devices, offering real-time monitoring, remote control, and firmware updates to keep performance optimised.

EcoFlow portable power station powering a television in a modern living room.

Use Cases and Final Verdict

Which EcoFlow Power Station is Right for You?

If you need high capacity, faster charging, longer cycle life, and greater expandability, choose the EcoFlow Delta 3. It’s perfect for heavy-duty outdoor adventures, off-grid living, and serious emergency backup.

If you want lightweight portability, quick set-up, and a budget-friendly option, go for the EcoFlow River 3. It’s ideal for camping trips, day use, and keeping essential devices charged.

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