EcoFlow EB300 Extra Battery For River 3 (EF-RV-E01-1)

EcoFlow EB300 Extra Battery for River 3 EF-RV-E01-1 is a compact and modular expansion battery designed to increase the runtime and flexibility of the EcoFlow River 3 Plus portable power system. Built with advanced LiFePO4 battery technology, it delivers reliable long-term performance and seamless plug-and-play integration through EcoFlow’s stacking system. With its lightweight design, fast charging capability, and ability to function both as an expansion unit and a standalone USB-C power source, it is ideal for users who need extended backup power for home, travel, outdoor activities, and emergency situations.

Product Features

Expandable Energy for River 3 Systems

Adds additional battery capacity to compatible River 3 setups, significantly extending runtime for essential devices such as routers, lights, phones, and laptops during outages or off-grid use.

High-Cycle LiFePO4 Battery Technology

Built with durable lithium iron phosphate cells rated for long cycle life, ensuring stable performance, improved safety, and long-term reliability for everyday use.

Plug-and-Play Modular Design

Uses a secure stacking connection system that allows quick attachment to the River 3 Plus without cables, making expansion simple, stable, and portable.

Standalone USB-C Power Capability

Includes a built-in USB-C port that allows the battery to function independently as a portable power bank for charging laptops, tablets, and mobile devices.

Lightweight and Portable Construction

Designed for easy transport and flexible use, making it suitable for travel, camping, mobile workstations, and emergency preparedness.

Efficient Charging and Energy Management

Supports fast charging through compatible EcoFlow systems and intelligent power balancing when connected to the main unit for optimized energy use.

Product Specifications

• Model: EF-RV-E01-1
• Battery Type: LiFePO4 (Lithium Iron Phosphate)
• Battery Capacity: 286Wh
• Expandable System Capacity: Up to 572Wh (with River 3 Plus) or higher depending on configuration
• Connection Type: Pogo pin stacking (cable-free integration)
• USB-C Port: 1 × USB-C (up to 140W input/output)
• Cycle Life: 3000+ cycles to 80% capacity
• Rated Voltage: Approximately 22.4V
• Weight: Approximately 3.5 kg
• Operating Temperature: -10°C to 45°C
• Charging Methods: Via River 3 system, solar (system dependent), or USB-C direct input
• Application: Portable backup power, camping, home emergency power, travel, and mobile work setups