The EcoFlow RIVER Pro Extra Battery doubles the capacity of RIVER Pro from 720Wh to 1440Wh, giving you the freedom to customize your power for any adventure. The RIVER Pro weighs just 7200g and the RIVER Pro Extra Battery weighs 6985g, making them both portable and easy to transport. The RIVER Pro + Extra Battery can easily fit in a car trunk, on a campsite, or indoors, giving you the power to take your adventure anywhere.