EcoFlow RIVER 3 Plus Extra Battery EB300 286Wh Expansion LiFePO4 Power Supply

EcoFlow Products

✅ Free Shipping & Delivery

• Free shipping to the 48 continental U.S. states

• Island delivery available via our insured Florida-based logistics network — secure, coordinated, and professional. ASK US FOR A QUOTE, SHIPPING IS EXTRA. 

• Select EcoFlow solar panels and accessories may ship via USPS when applicable

• Message us after placing your order to receive your Florida shipping address — this ensures smooth processing for island deliveries

• Authorized EcoFlow, Florida Dealer.

• 19+ years of trusted online selling experience.

📣 Tax Exemption Highlights

• EcoFlow solar generators and related equipment are tax-exempt in most Island locations.

• Starting August 1, 2025, qualifying solar products are also tax-exempt in Florida through P.E.T.S AND YOU.

• Save more while investing in clean energy solutions.

SKU: EFEB300

UPC: 842783151407

Key Features

• Expandable Energy Storage: Add 286Wh to the RIVER 3 Plus for a total of 572Wh, ideal for outdoor adventures or power outages.

• Independent Use: Use the extra battery on its own with a built-in 140W USB-C port for charging small devices and recharging on the go.

• Long-Lasting Durability: LFP battery chemistry ensures a 10-year lifespan, 6× longer than the industry average.

• Robust Design: IP65 waterproof rating, UL 94V-0 casing, and drop-tested up to 3.3 ft for reliable outdoor use.

• Fast Charging Options: Three methods—USB-C, solar, AC outlet, or car charging—recharge in as fast as 1.5 hours.

Main Purpose

The EF ECOFLOW River 3 Plus Extra Battery EB300 is designed to enhance energy storage for outdoor enthusiasts, emergency preparedness, and everyday use.

It provides reliable, portable power with versatile charging options and robust durability.

Product Overview

The EF ECOFLOW River 3 Plus Extra Battery EB300 is a compact and powerful energy solution.

With 286Wh of additional storage, it expands the RIVER 3 Plus to 572Wh, offering extended runtime for appliances like car fridges and travel kettles. 

Its independent use capability, long-lasting LFP battery chemistry, and robust design make it perfect for outdoor adventures and emergency situations.

What's Included

1. EF ECOFLOW River 3 Plus Smart Extra Battery EB300 (286Wh)
2. Quick Start Guide

Why Choose the Item

• Enhanced Energy Storage: Expand your RIVER 3 Plus capacity for longer runtime.

• Independent Functionality: Use the extra battery on its own for portable power.

• Durability: Waterproof, heat-resistant, and drop-tested for reliable outdoor use.

• Fast Charging: Multiple methods for quick and efficient recharging.

• Eco-Friendly: Supports solar charging for sustainable energy use.

Frequently Asked Questions (FAQs)

1. Can the extra battery be used independently? Yes, it features a built-in 140W USB-C port for charging small devices and recharging the battery.

2. How long does it take to charge the extra battery? It can be charged in as fast as 1.5 hours using USB-C, solar, AC outlet, or car charging.

3. What is the lifespan of the battery? The LFP battery chemistry ensures a 10-year lifespan, 6× longer than the industry average.

4. Is the battery suitable for outdoor use? Absolutely! It has an IP65 waterproof rating, is heat-resistant, and has been drop-tested for durability.

5. What appliances can the battery power? It can run a car fridge for 7.2 hours or a travel kettle for 42 minutes, among other devices.

Warranty Coverage

EcoFlow Factory Warranty applies to products shipped within the 48 contiguous U.S. 

• Customers in Island locations can receive support via P.E.T.S AND YOU’s Florida service center.

• If a replacement is required, we assist with shipping to/from Florida at significantly reduced rates.

• Optional CPS Extended Warranty available: Begins 30 days after purchase, covers shipping costs to and from excluded areas. Includes protection for the full original dollar value at time of purchase.

📌 Please Note 

• If you reside outside the 48 continental states, contact us before shipping power stations — they require specific hazardous goods procedures. We’re happy to assist in ensuring safe and compliant delivery.

• Solar panels and accessories may ship in separate boxes with different tracking numbers.