EcoFlow | RIVER 3 Plus Smart Extra Battery
EcoFlow RIVER 3 Plus Smart Extra Battery
Expand the runtime of your EcoFlow RIVER 3 Plus with the EcoFlow RIVER 3 Plus Smart Extra Battery. Available in 286Wh (EB300) and 572Wh (EB600) capacities, this expansion battery seamlessly connects to your RIVER 3 Plus, increasing your total energy storage for extended backup power, camping, RV adventures, and off-grid applications. Built with durable LiFePO4 battery technology, it delivers up to 3,000 charge cycles while maintaining long-term performance. The Smart Extra Battery also features a 140W USB-C input/output port, allowing it to charge laptops, tablets, and other USB-C devices independently. Its compact, stackable design makes it easy to transport while providing a reliable and flexible power solution.
KEY FEATURES
- Designed for EcoFlow RIVER 3 Plus – Expands the capacity of your RIVER 3 Plus portable power station.
- Two Capacity Options – Available in 286Wh (EB300) or 572Wh (EB600) versions.
- Expandable Power – Increase total system capacity up to 858Wh when paired with the compatible RIVER 3 Plus.
- LiFePO4 Battery Technology – Long-lasting battery chemistry rated for approximately 3,000 charge cycles.
- 140W USB-C Input & Output – Charge or recharge USB-C devices directly without the main power station.
- Smart Battery Management System (BMS) – Provides protection against overcharging, overheating, overload, short circuits, and overcurrent.
- Compact & Stackable Design – Lightweight construction for easy transportation and storage.
- Plug-and-Play Installation – Quickly attaches to the RIVER 3 Plus without complicated setup.
- Ideal for Extended Runtime – Perfect for camping, RVs, home backup, emergency preparedness, and outdoor work.


Specifications
| Specification | Details |
|---|---|
| Product Name | EcoFlow RIVER 3 Plus Smart Extra Battery |
| Compatible Model | EcoFlow RIVER 3 Plus |
| Battery Capacity | EB300: 286Wh / EB600: 572Wh |
| Battery Chemistry | LiFePO4 (LFP) |
| Battery Life | 3,000 Cycles to 80% Capacity |
| USB-C Input | Up to 140W |
| USB-C Output | Up to 140W |
| Battery Connection | Dedicated Expansion Battery Port |
| Rated Voltage | 22.4V |
| Protection System | Over Voltage, Overload, Over Temperature, Short Circuit, Low Temperature, Low Voltage & Overcurrent Protection |
| Operating Temperature | 20°C–30°C (Optimal) |
| Charge Temperature | 0°C–45°C |
| Discharge Temperature | -10°C to 45°C |
| Dimensions (EB300) | 234 × 224 × 110 mm |
| Dimensions (EB600) | 234 × 224 × 158 mm |
| Weight (EB300) | Approx. 3.5 kg (7.72 lb) |
| Weight (EB600) | Approx. 5.8 kg (12.79 lb) |
| In the Box | Smart Extra Battery, Manuals & Warranty Card |
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