--- 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: "50317 som" currency: KGS in_stock: true reviews_count: 8 category: "Ef Ecoflow" url: https://www.desertcart.kg/products/690301739-ef-ecoflow-river-3-plus-portable-power-station-extra-battery store_origin: KG region: Kyrgyzstan --- # 140W USB-C fast charge/discharge IP65 waterproof & rugged design 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:** 50317 som **Availability:** ✅ In Stock ## Summary > 🔌 Power up your freedom—expand, charge, and conquer every adventure! ## 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?** 50317 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/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 - • **Built for the Wild:** IP65-rated waterproofing and drop-tested ruggedness mean this battery thrives outdoors, rain or shine, heat or drop. - • **Decade-Long Durability:** LiFePO4 chemistry ensures 10 years of daily use with 6× longer lifespan than typical batteries, backed by advanced X-Guard protection. - • **Fast & Flexible Charging:** Charge via USB-C, solar, AC, or car in as little as 1.5 hours—power that keeps pace with your lifestyle. - • **Charge & Go, Independently:** Use the extra battery solo with its built-in 140W USB-C port—perfect for charging devices or recharging on the move without the main unit. - • **Double Your Power On Demand:** Seamlessly stack the EB300 to boost your River 3 Plus capacity from 286Wh to 572Wh—more juice for longer adventures or emergencies. ## Overview The EF ECOFLOW River 3 Plus Extra Battery EB300 is a 286Wh LiFePO4 portable power expansion pack designed to double your energy capacity with a simple stackable design. Featuring a robust IP65 waterproof rating, a built-in 140W USB-C port for fast charging and discharging, and a 10-year lifespan supported by advanced X-Guard safety technology, it offers reliable, long-lasting power for outdoor enthusiasts and emergency preparedness alike. ## 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: Good - Works as expected Review: Couldn’t be easier. - Works exactly as advertised - plug and play for more run time. ## 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 | | Antenna Location | Power Tool | | Best Sellers Rank | #28,553 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #76 in Outdoor Generators | | Brand | EF ECOFLOW | | Built-In Media | RIVER 3 Plus Extra Battery EB300 | | Color | Black | | Customer Reviews | 4.8 4.8 out of 5 stars (40) | | Item Dimensions | 9.2 x 8.8 x 4.3 inches | | Manufacturer | EF ECOFLOW | | Model Name | EB300 | | Model Number | EB300 | | Number of Outlets | 1 | | Other Special Features of the Product | Portable | | Power Source | Battery Powered | | Reusability | Rechargeable | | UPC | 842783163493 | | Unit Count | 1.0 Count | | Warranty Description | 5 Year | ## 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) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good *by A***B on March 18, 2026* Works as expected ### ⭐⭐⭐⭐⭐ 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. ## 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.kg/products/690301739-ef-ecoflow-river-3-plus-portable-power-station-extra-battery](https://www.desertcart.kg/products/690301739-ef-ecoflow-river-3-plus-portable-power-station-extra-battery) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-05-13*