
Extend your power capacity with the EcoFlow RIVER 3 Plus Smart Extra Battery. Designed for seamless integration with the RIVER 3 Plus, this modular battery boosts your total energy storage, making it ideal for outdoor adventures, emergency backup, or off-grid use. Lightweight, compact, and easy to attach — stay powered for longer, wherever you go.
Q: What is the continuous wattage this battery provides?
A: This battery provides a continuous wattage of 600 watts.
Q: What kind of battery chemistry does this product use?
A: This product uses lithium-ion battery chemistry.
Q: How many devices can be charged simultaneously?
A: Only one device can be charged simultaneously.
Q: What is the maximum input power of this battery?
A: The maximum input power of this battery is 140 watts.
Q: Does this battery have a sine wave inverter?
A: No, this battery does not have a sine wave inverter.
Q: Can I charge devices using a USB-C port?
A: Yes, you can charge devices using the USB-C port.
Q: What is the maximum battery life of this product?
A: The maximum battery life of this product is 1500 hours.
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Extend your power capacity with the EcoFlow RIVER 3 Plus Smart Extra Battery. Designed for seamless integration with the RIVER 3 Plus, this modular battery boosts your total energy storage, making it ideal for outdoor adventures, emergency backup, or off-grid use. Lightweight, compact, and easy to attach — stay powered for longer, wherever you go.

The Jackery Explorer 290 provides 290-Watt hours of power with 200W continuous and 400W peak output to handle your portable power needs, engineered with a rechargeable lithium-ion battery, which provides maintenance-free energy without the hassle of fuel or fumes. It is perfect for indoor and outdoor use. Explorer 290 can also be used for home emergencies when suffering from power outages caused by storms.

The EcoFlow River 3 Plus 268Wh Portable Power Station offers compact, reliable power with fast recharging, multiple ports, and solar compatibility—perfect for outdoor adventures or backup needs.

Exclusive for Best Buy! The EcoFlow River 3 Max (Wireless) Portable Power Station offers compact, reliable power with fast recharging, multiple ports, and solar compatibility—perfect for outdoor adventures or backup needs.
| Pros for EcoFlow - River 3 Plus Smart Extra Battery 300EB (286 Wh Capacity) - Black | |||
|---|---|---|---|
| There were no pros for this product— | Portability, Battery Life, Overall Performance, Power Output, Weight | There were no pros for this product— | There were no pros for this product— |
| Cons for EcoFlow - River 3 Plus Smart Extra Battery 300EB (286 Wh Capacity) - Black | |||
| There were no cons for this product— | Port Selection, Solar Panel | There were no cons for this product— | There were no cons for this product— |