---
product_id: 690301739
title: "EF ECOFLOW River 3 Plus Portable Power Station Extra Battery EB300, 286Wh Expansion LiFePO4 (LFP) Battery with 10-Year Lifespan, Built-in 140W USB-C Port for Charging/Discharging, Use Independently"
brand: "ef ecoflow"
price: "278742CFA"
currency: XOF
in_stock: true
reviews_count: 7
category: "Ef Ecoflow"
url: https://www.desertcart.sn/products/690301739-ef-ecoflow-river-3-plus-portable-power-station-extra-battery
store_origin: SN
region: Senegal
---

# 140W USB-C fast charging/discharging IP65 waterproof & rugged durability 286Wh LiFePO4 battery capacity EF ECOFLOW River 3 Plus Portable Power Station Extra Battery EB300, 286Wh Expansion LiFePO4 (LFP) Battery with 10-Year Lifespan, Built-in 140W USB-C Port for Charging/Discharging, Use Independently

**Brand:** ef ecoflow
**Price:** 278742CFA
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your hustle, anywhere, anytime.

## Quick Answers

- **What is this?** EF ECOFLOW River 3 Plus Portable Power Station Extra Battery EB300, 286Wh Expansion LiFePO4 (LFP) Battery with 10-Year Lifespan, Built-in 140W USB-C Port for Charging/Discharging, Use Independently by ef ecoflow
- **How much does it cost?** 278742CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/690301739-ef-ecoflow-river-3-plus-portable-power-station-extra-battery)

## Best For

- ef ecoflow enthusiasts

## Why This Product

- Trusted ef ecoflow brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Charge & Go with USB-C:** Built-in 140W USB-C port lets you power laptops and phones or recharge the battery independently—perfect for the mobile professional.
- • **Engineered for a Decade:** LiFePO4 chemistry delivers 10 years of daily use with advanced X-Guard protection, ensuring safety and longevity beyond industry standards.
- • **Built to Brave the Elements:** IP65 waterproof rating and drop-tested durability mean your power source stays reliable rain or shine, wherever your journey takes you.
- • **Double Your Power On Demand:** Seamlessly stack the 286Wh extra battery to boost your RIVER 3 Plus capacity to 572Wh—more juice for longer adventures or emergencies.
- • **Fast, Flexible Charging Options:** Charge via solar, AC, or car in as little as 1.5 hours—keeping you powered up without missing a beat.

## Overview

The EF ECOFLOW River 3 Plus Extra Battery EB300 is a 286Wh LiFePO4 portable power expansion with a 10-year lifespan, featuring a 140W USB-C port for independent use. It offers IP65 waterproof protection, rugged durability, and versatile charging methods, making it an essential companion for outdoor professionals and emergency preparedness.

## Description

Buy EF ECOFLOW River 3 Plus Portable Power Station Extra Battery EB300, 286Wh Expansion LiFePO4 (LFP) Battery with 10-Year Lifespan, Built-in 140W USB-C Port for Charging/Discharging, Use Independently: Generators - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Couldn’t be easier. - Works exactly as advertised - plug and play for more run time.
Review: Dependable battery - Battery extension works like it says gives you more time for usage of power station, charges fast and can be used separately as a stand alone power to charge a laptop or phone. Good for camping and road trips .I highly recommend.

## Features

- Expand Your Energy Storage: Add an extra 286Wh of energy storage to RIVER 3 Plus for 572Wh, perfect for increasing energy storage for outdoors or power outages. Run a car fridge for 7.2 hours or travel kettle for 42 min. With a simple pogo pin connection, stack the extra battery in seconds without extra cables or screws.
- Use Independently: Lighten your load and use the extra battery on its own without RIVER 3 Plus. Use its 140W USB-C port for charging small devices and recharging the battery when you're on the go.
- 10 Years of Daily Use: With LFP battery chemistry, the battery pack has a 6× longer life than the industry average. Using exclusive X-Guard, the extra battery is protected with real-time monitoring and 40 protective features including overheating and short circuit.
- Robust & Reliable: IP65 waterproof rating protects against water splashes, making it perfect for outdoor use. Designed to withstand extreme heat with a UL 94V-0-rated casing and has been rigorously drop tested up to 3.3 ft without damaging the battery.
- 3 Charging Methods: Charge the RIVER 3 Plus Extra Battery directly using its built-in USB-C port. Connect to the RIVER 3 Plus to charge using solar, AC outlet or by using your car in as fast as 1.5 hr.
- What's in the Box: RIVER 3 Plus Smart Extra Battery EB300 (286Wh), Quick Start Guide and 5-Year Service.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DS2BWFN7 |
| Best Sellers Rank | #14,756 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #66 in Outdoor Generators |
| Customer Reviews | 4.8 4.8 out of 5 stars (34) |
| Item Weight | 12 pounds |
| Item model number | EB300 |
| Manufacturer | EF ECOFLOW |
| Product Dimensions | 9.2 x 8.8 x 4.3 inches |

## Product Details

- **Brand:** EF ECOFLOW
- **Color:** Black
- **Power Source:** Battery Powered
- **Recommended Uses For Product:** Power Tool
- **Special Feature:** Portable

## Images

![EF ECOFLOW River 3 Plus Portable Power Station Extra Battery EB300, 286Wh Expansion LiFePO4 (LFP) Battery with 10-Year Lifespan, Built-in 140W USB-C Port for Charging/Discharging, Use Independently - Image 1](https://m.media-amazon.com/images/I/51L7FoQHVmL.jpg)
![EF ECOFLOW River 3 Plus Portable Power Station Extra Battery EB300, 286Wh Expansion LiFePO4 (LFP) Battery with 10-Year Lifespan, Built-in 140W USB-C Port for Charging/Discharging, Use Independently - Image 2](https://m.media-amazon.com/images/I/719OHlWBvRL.jpg)
![EF ECOFLOW River 3 Plus Portable Power Station Extra Battery EB300, 286Wh Expansion LiFePO4 (LFP) Battery with 10-Year Lifespan, Built-in 140W USB-C Port for Charging/Discharging, Use Independently - Image 3](https://m.media-amazon.com/images/I/71p9SeV4bcL.jpg)
![EF ECOFLOW River 3 Plus Portable Power Station Extra Battery EB300, 286Wh Expansion LiFePO4 (LFP) Battery with 10-Year Lifespan, Built-in 140W USB-C Port for Charging/Discharging, Use Independently - Image 4](https://m.media-amazon.com/images/I/7196lefkwhL.jpg)
![EF ECOFLOW River 3 Plus Portable Power Station Extra Battery EB300, 286Wh Expansion LiFePO4 (LFP) Battery with 10-Year Lifespan, Built-in 140W USB-C Port for Charging/Discharging, Use Independently - Image 5](https://m.media-amazon.com/images/I/71iNJyIL7KL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Couldn’t be easier.
*by S***S on December 19, 2025*

Works exactly as advertised - plug and play for more run time.

### ⭐⭐⭐⭐⭐ Dependable battery
*by A***R on July 3, 2025*

Battery extension works like it says gives you more time for usage of power station, charges fast and can be used separately as a stand alone power to charge a laptop or phone. Good for camping and road trips .I highly recommend.

### ⭐⭐⭐⭐⭐ Charge it when it goes low!
*by W***5 on August 19, 2025*

It’s nice to have extra batteries power when I need it. Looking forward to get another one soon.

## Frequently Bought Together

- EF ECOFLOW River 3 Plus Portable Power Station Extra Battery EB300, 286Wh Expansion LiFePO4 (LFP) Battery with 10-Year Lifespan, Built-in 140W USB-C Port for Charging/Discharging, Use Independently
- EF ECOFLOW Portable Power Station RIVER 3 Plus, 286Wh LiFePO4 Battery, 3 Up to 1200W AC Outlets, <10 MS UPS, Expandable to 858Wh, <30 dB Quiet, 1Hr Fast Charging Solar Generator for Outdoor Camping/RV
- EF ECOFLOW Portable Power Station RIVER 2, 256Wh LiFePO4 Battery/ 1 Hour Fast Charging, 2 Up to 600W AC Outlets, Solar Generator (Solar Panel Optional) for Outdoor Camping/RVs/Home Use

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sn/products/690301739-ef-ecoflow-river-3-plus-portable-power-station-extra-battery](https://www.desertcart.sn/products/690301739-ef-ecoflow-river-3-plus-portable-power-station-extra-battery)

---

*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-02*