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EcoFlow RIVER 3 Plus Smart Extra Battery

by EcoFlow
|
SKU: EFEB300
Save $50.00
Original Price $209.00
Current Price $159.00

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Battery Options
Authorized EcoFlow Dealer

Authorized EcoFlow Dealer

Friendly Lifetime Support

Friendly Lifetime Support

Easy 30-Day Returns

Easy 30-Day Returns

The EcoFlow RIVER 3 Plus Smart Extra Battery Expands The Power And Flexibility Of Your RIVER 3 Plus

Double or even TRIPLE the power of your RIVER 3 Plus Power Station with the EcoFlow RIVER 3 Plus Smart Extra Battery. This versatile accessory enhances the functionality of your EcoFlow RIVER 3 Plus, allowing you to customize your power capacity and improve your device’s usability. Whether you're camping, working remotely, or preparing for emergencies, this smart extra battery ensures you're never left without reliable energy.

With two options—EB300 (286Wh) or EB600 (572Wh)—you can stack up to 858Wh of capacity to meet your specific energy needs. Lightweight, durable, and packed with innovative features, the RIVER 3 Plus Smart Extra Battery is your ultimate portable power companion.

Whether you're gearing up for an outdoor adventure or preparing your home’s emergency backup power, the EcoFlow RIVER 3 Plus Smart Extra Battery is your go-to solution for flexible, reliable, and portable power.

EcoFlow RIVER 3 Plus Smart Extra Battery above EcoFlow RIVER Series

EcoFlow RIVER 3 Plus Smart Extra Battery Features

Expand the Capacity of Your RIVER 3 Plus to Meet Your Needs

Choose between two battery models to customize your energy storage. Achieve up to 858Wh by stacking the EB300 or EB600, adapting effortlessly to your power requirements.

More Charging and Recharging Options

Add a 140W USB-C input/output port for enhanced versatility. Charge your devices or recharge the extra battery independently, ensuring you're always powered up.

Wireless Plug-and-Play Connection

Thanks to Pogo Pin technology, connecting the extra battery to your RIVER 3 Plus is effortless. Forget about cables or screws—just snap it into place and enjoy instant energy expansion.

Lightweight and Portable Design

The EB300 model weighs only 7.7 lbs, while the EB600 offers greater capacity at 12.8 lbs. Both models are compact and easy to transport, perfect for life on the move.

Durable LFP Technology for Long-Term Use

With a 10-year lifespan and 3000 cycles to 80% capacity, this extra battery ensures reliability and durability for years to come.


EcoFlow RIVER 3 Plus Smart Extra Battery Warranty

EcoFlow provides a limited warranty policy, ensuring the absence of defects in materials, workmanship, and performance during the warranty period.


What's Included

  • 1 x EcoFlow RIVER 3 Plus Smart Extra Battery*
  • 1 x Quick-Start Guide
  • 1 x Warranty Card

*No cables required. Connects directly to the RIVER 3 Plus via built-in pogo-pin contacts when stacked.

EcoFlow RIVER 3 Plus Smart Extra Battery Inside The Tent

EcoFlow RIVER 3 Plus Smart Extra Battery Specifications

Extra Battery 300 Specifications

Capacity 286Wh
Dimensions 9.2 x 8.8 x 4.3 in
Net Weight 7.7 lb
Battery Chemistry LiFePO4, 3000 cycles to 80% capacity
USB-C Output 1 port, 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max
USB-C Input 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max

Extra Battery 600 Specifications

Capacity 572Wh
Dimensions 9.2 x 8.8 x 6.2 in
Net Weight 12.8 lb>
Battery Chemistry LiFePO4, 3000 cycles to 80% capacity
USB-C Output 1 port, 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max
USB-C Input 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max

Common Customer Questions

Get answers to the most frequently-asked questions customers ask before placing an order.

Is Outbound Power an Authorized Dealer?

Yes! Outbound Power is an Authorized Dealer for every single brand and product on our store.

How long will it take for my order to arrive?

Shipping times vary depending on your location and the product or products ordered.

Order Processing Time
Most products are processed within 1-3 business days. If there is a delay in processing your order, we will alert you with as much information as possible about what to expect.

After order processing is complete, you will receive tracking information to monitor your order while it is in transit.

Order Shipping Time
Following processing, it may take between 3 and 8 days to arrive, depending on your location.

Please refer to the product page for your item and reference the estimated delivery time frame for more details.

Additionally, you can see the estimated delivery time frame during checkout and receive a tracking number once your order ships.

What are your shipping rates? Do you offer free shipping?

Everything on our store ships for free. Really!

What is Outbound Power's return policy?

Most items may be returned within 30 days of delivery. Please refer to our Returns & Exchanges policy to determine what items are eligible. Returns are not accepted beyond 30 days following delivery.

Are Outbound Power products used/old/refurbished?

Everything sold on our website is brand-new.

Do you price match?

No — we price BEAT! Please refer to our Price Beat Promise for full details.