EcoFlow RIVER 3 Plus Smart Extra Battery EB300 | 286Wh LFP Expansion Pack, Instant Capacity Doubling & Smart App Control – [EF-RV-E01-1]

Description

From the Manufacturer
The EcoFlow RIVER 3 Plus Smart Extra Battery (EB300), model EF-RV-E01-1, is the essential modular upgrade for users who need to push their portable power further. Specifically engineered for the RIVER 3 Plus ecosystem, this expansion pack allows you to scale your energy storage effortlessly. Whether you are working remotely in a park or preparing for a home power blip, the EB300 provides the necessary buffer to keep your devices running longer without the bulk of a larger station.

Double Your Runtime in Seconds
By adding the 286Wh Smart Extra Battery to your RIVER 3 Plus, you effectively double your total available watt-hours. This modularity gives you the best of both worlds: a lightweight, ultra-portable setup for short day trips, and a high-capacity powerhouse for extended weekend stays. The two units charge and discharge in unison, ensuring a balanced and efficient energy flow across the entire system.

A Decade of Reliable Power
Equipped with automotive-grade LiFePO4 (LFP) battery chemistry, the EB300 is built for the long haul. It is rated for 3,000+ full charge/discharge cycles before hitting 80% capacity. This means that even with daily use, you can expect over 10 years of peak performance, far outlasting standard lithium-ion alternatives and providing one of the lowest costs-per-cycle in the industry.

Intelligence at Your Fingertips
The “Smart” in its name comes from its deep integration with the EcoFlow App. Once connected to your RIVER 3 Plus main unit, the extra battery’s data is visible via Bluetooth or Wi-Fi. You can monitor exactly how much energy is being used, view the estimated time until the battery is empty, and manage charging parameters—all from your smartphone.

Built for the Journey
Weighing in at a highly portable fraction of the main unit, the EB300 doesn’t add unnecessary bulk to your gear. The internal Battery Management System (BMS) constantly scans for over-voltage, over-current, and temperature spikes, making it one of the safest portable energy solutions available today.

Specifications

• Model EcoFlow RIVER 3 Plus Extra Battery (EB300 / EF-RV-E01-1)
• Capacity 286Wh
• Battery Chemistry LiFePO4 (LFP)
• Cycle Life 3,000 Cycles to 80%+ Capacity
• Connection Type Dedicated Expansion Port
• Charging Support AC / Solar / Car (When connected to Main Unit)
• Protection BMS, Over-Voltage, Overload, Over-Temp
• App Support EcoFlow App (Wi-Fi / Bluetooth)
• Weight ~3.2 kg (Ultra-Lightweight)

What’s in the box:

• 1 × EcoFlow RIVER 3 Plus Smart Extra Battery (EB300)
• 1 × Expansion Cable
• 1 × User Manual & Warranty Card

Warranty Information
5-Year Manufacturer Warranty*

Warranty covers internal battery defects and electronics; does not cover physical abuse, water submersion, or unauthorized disassembly.