The EcoFlow RIVER 3 Plus Smart Extra Battery lets you expand your power capacity up to 858Wh by stacking one EB300 (286Wh) or EB600 (572Wh) battery. It adds a 140W USB-C port for extra charging and recharging options, allowing independent use. Weighing just 3.5 kg, it’s lightweight and portable, ideal for short trips. Featuring durable LiFePO₄ battery technology and a 10-year lifespan, this extra battery offers reliable, long-lasting power with a 5-year warranty for peace of mind.
SPECIFICATIONS
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
Warranty: 5 Years
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
Warranty: 5 Years
ADDITIONAL INFORMATION
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.
