ncrease your portable power capacity with the EcoFlow EFEB300 RIVER 3 Plus Smart Extra Battery. Designed exclusively for the RIVER 3 Plus Plus, this 286Wh expansion battery provides additional runtime for camping, RV travel, emergency backup power, outdoor adventures, and off-grid applications.
Featuring advanced LiFePO4 (LFP) battery technology, the EFEB300 delivers over 3,000 charge cycles while maintaining long-lasting performance and reliability. The wireless pogo-pin connection system allows quick, cable-free attachment to your RIVER 3 Plus, creating a seamless power expansion solution without complicated setup.
The EFEB300 adds an extra 140W USB-C input/output port, allowing you to charge devices directly from the battery or recharge the battery independently. Lightweight and compact at only 7.7 lbs (3.5 kg), it is easy to transport and ideal for users who need additional portable power without adding excessive weight.
Whether you're extending runtime during power outages, powering devices at a campsite, or building a flexible portable energy system, the EcoFlow EFEB300 Smart Extra Battery provides dependable, expandable power wherever you need it.
Key Features:
• Adds 286Wh of expandable battery capacity to EcoFlow RIVER 3 Plus
• Expand total system capacity up to 572Wh or 858Wh depending on configuration
• Long-lasting LiFePO4 battery with 3,000+ charge cycles
• 140W USB-C input and output for charging devices and battery recharging
• Wireless pogo-pin connection with no cables or screws required
• Lightweight and portable design weighing only 7.7 lbs (3.5 kg)
• Can be used independently for USB-C device charging
• Built for camping, travel, emergency preparedness, and backup power
• Reliable battery performance with up to a 10-year lifespan
• Compact footprint for easy storage and transport
- Expand the capacity of the RIVER 3 Plus to up to 858Wh.
- Choose from two Extra Battery models to fit your needs: EB300 (286Wh) or EB600 (572Wh).
- An additional 140W of USB-C input and output option.
- Enjoy a wireless pogo pin connection—no cables or screws required.
- Reduce your load by using the Extra Battery independently.
Adjust capacity for growing energy needs
Expandable up to 858Wh with 2 Extra Battery options
Level up your RIVER 3 Plus with an Extra Battery. Choose either the EB300 (286Wh) or the EB600 (572Wh), and simply stack one at a time to achieve up to 858Wh of pure energy.
Adds an extra charging and recharging option
More possibilities, more flexibility
Looking to charge more devices or conveniently power your RIVER 3 Plus via USB-C? Adding this extra battery expands its capacity and significantly enhances its versatility with an extra 140W USB-C port, offering the RIVER 3 Plus a new charging and recharging option. With the USB-C port, the Extra Battery gives you the freedom to use it independently.
Specs - Extra Battery 300
- Capacity- 286Wh
- Dimensions- 234 × 224 × 110 mm
- Net Weight- 3.5 kg
- Battery Chemistry- LiFePO4, 3000 cycles to 80% capacity
- USB-C Output- 1 port, 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max
- USB-C Input- 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max
Specs - Extra Battery 600
- Capacity- 572Wh
- Dimensions- 234 × 224 × 158 mm
- Net Weight- 5.8 kg
- Battery Chemistry- LiFePO4, 3000 cycles to 80% capacity
- USB-C Output- 1 port, 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max
- USB-C Input- 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max
