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Availability:
in stock, ready to be shipped
Availability:
in stock, ready to be shipped
by EcoFlow

EcoFlow RIVER 3 Plus Extra Battery

Original price $209.00 - Original price $418.00
Original price $209.00
$209.00
$209.00 - $418.00
Current price $209.00
SKU EFEB300

Description         

  • Increase the RIVER 3 Plus capacity to as much as 858Wh for extended use.

  • Select from two optional extra battery models to match your power needs: EB300 (286Wh) or EB600 (572Wh).

  • Gain an additional 140W USB-C port for both input and output functions.

  • Benefit from a quick, cable-free Pogo Pin connection—no tools or screws needed.

  • Lighten your gear by using the Extra Battery as a standalone power source when required.

Expandable up to 858Wh with 2 Extra battery options

Adjust capacity for growing energy needs

Level up your RIVER 3 Plus with an Extra Battery. Choose either the EB300 (286Wh) or the EB600 (572Wh), and simply stack one at a time to achieve up to 858Wh of pure energy.

Adds an extra charging and recharging option

More possibilities, more flexibility

Looking to charge more devices or conveniently power your RIVER 3 Plus via USB-C? Adding this extra battery expands its capacity and significantly enhances its versatility with an extra 140W USB-C port, offering the RIVER 3 Plus a new charging and recharging option. With the USB-C port, the Extra Battery also provides the freedom to use it independently.

Hassle-free connection

Plug-and-play within seconds

Utilizing Pogo Pin tech, the batteries connect wirelessly, fastening easily with clips instead of cables or screws.

Lightweight at only 7.7 lb

Use the extra battery independently to lighten your load

Weighing just 7.7 lb, the EB300 is lighter than the RIVER 3 Plus. It is lightweight, with a compact design and USB-C input and output port, making the extra battery highly convenient for on-the-go use. The Extra Battery offers the perfect solution for short outdoor trips with minimal devices to expand your possibilities.

10-year lifespan with an LFP battery

A one-time investment that lasts for 10 years

The Extra Battery features the same LPF battery technology and offers a 5-year warranty, just like the RIVER 3 Plus. This ensures worry-free usage for up to 10 years, giving you peace of mind and long-lasting performance.


Specifications

Extra Battery 300

Specs

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

Specs

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


Warranty

Warranty Policy – King of Generators

At King of Generators, we are committed to ensuring you have a seamless experience with your purchase. Below is an overview of the EcoFlow warranty policy to help you understand coverage and how to make a warranty claim through King of Generators support.

 


 

Warranty Period Overview

EcoFlow provides a limited warranty on its products, starting from the date of purchase. The warranty period varies by product type:

  • DELTA Series & RIVER Series: 1–5 years (depending on model)

  • Solar Panels: 12 months to 10 years

  • Accessories: 12 months

  • Smart Generators: 1–3 years

For detailed coverage, refer to the product-specific warranty on EcoFlow’s official website or contact King of Generators support.

 


 

What’s Covered?

  • Free repairs or replacements for defects in materials or workmanship

  • Warranty extensions available for select products upon registration on EcoFlow’s website

 


 

What’s Not Covered?

The warranty does not cover:

  • Damage due to misuse, unauthorized modifications, or external factors (e.g., water, weather)

  • Products purchased from unauthorized sellers or without valid proof of purchase

  • Products used outside the intended region or incompatible with local power standards

Note: EcoFlow products are designed for use in the U.S. Warranty claims for malfunctions due to use outside the country may not be covered.

 


 

How to Make a Warranty Claim

If you experience any issues, please contact King of Generators support to initiate a warranty claim.

📞 Phone: (855) 799-2943
📧 Email: info@kinggenerators.com

Our team will assist you with the claim process, including verifying your purchase, troubleshooting the issue, and coordinating with EcoFlow for repair or replacement.

Once approved, we will provide further instructions, including shipping details and estimated resolution time.

 


 

For any questions regarding warranty coverage, feel free to contact King of Generators support. We're here to help!

 

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