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EcoFlow | RIVER 3 Plus Smart Extra Battery

by EcoFlow
SKU EFEB300
Save $80.00 Save $80.00
Original price $289.00
Original price $289.00 - Original price $289.00
Original price $289.00
Current price $209.00
$209.00 - $209.00
Current price $209.00
This Item Qualifies for FREE SHIPPING.
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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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