EcoFlow RIVER 3 Plus Smart Extra Battery EB300 – EF-RV-E01-1

Expand Your Energy Storage

The EcoFlow RIVER 3 Plus Smart Extra Battery EB300 (EF-RV-E01-1) is a compact, lightweight 286Wh LiFePO₄ expansion battery designed specifically for the RIVER 3 Plus portable power station, wirelessly connecting via Pogo Pin technology to boost total capacity up to 572Wh (with one EB300) or 858Wh (with additional compatible extras like EB600). It features durable LFP chemistry rated for 3000+ cycles to 80%+ capacity for a 10-year lifespan, a built-in 140W USB-C port for independent charging/discharging (enabling standalone use as a power bank for devices like laptops or phones), and a slim, portable build weighing just 7.7 lb (3.5 kg) with dimensions around 9.2 × 8.8 × 4.3 inches—making it easy to stack securely on the main unit or carry separately for short trips, camping, outages, or light outdoor power needs while maintaining seamless integration, fast recharging compatibility, and reliable performance without cables or extra hassle.

Key Features

Seamless Wireless Expansion

It connects wirelessly to the RIVER 3 Plus power station via Pogo Pin technology—no cables required—automatically boosting total capacity from 286Wh to 572Wh with one EB300 or up to 858Wh when combined with additional compatible extras, delivering extended runtime for camping, outages, or short trips without setup hassle.

Standalone Power Bank Functionality

Equipped with a built-in 140W USB-C port that supports both charging and discharging, the EB300 can function independently as a high-power portable charger for laptops, tablets, phones, or other devices, providing versatile standalone use when not attached to the main unit.

Long-Lasting LiFePO₄ Chemistry

Powered by premium LiFePO₄ cells rated for 3000+ cycles to 80%+ capacity, it offers a reliable 10-year lifespan even with frequent use, ensuring safe, stable performance and reduced degradation over time compared to traditional lithium-ion batteries.

Ultra-Compact and Portable Design

Weighing only 7.7 lb (3.5 kg) with slim dimensions of approximately 9.2 × 8.8 × 4.3 inches, the battery is easy to carry, stack securely on the RIVER 3 Plus, or store in small spaces, making it perfect for mobile power needs without adding significant bulk.

Fast and Efficient Recharging

It supports quick recharging through the main unit or directly via its 140W USB-C port, maintaining compatibility with the RIVER 3 Plus’s fast-charging ecosystem so the expanded system returns to full capacity rapidly for on-the-go or emergency readiness.

What’s in the Box

• Battery
• User Manual

FAQs