- Hampshire Generators are the only UK EcoFlow supplier with factory trained engineers. - 300W (X-Boost 600W) Battery capacity 245Wh / 76800mAh - <20/10 ms UPS for uninterruptible backup - Power recharge lights, laptops, tablets, phones USB gadgets - Silent zero emissions rechargeable LiFePO 4 battery - Ideal for camping, caravanning emergency backup, home use - Fast charging via mains, 12v car adapter or solar panel (optional) The EcoFlow RIVER 3 Portable Power Station. The EcoFlow RIVER 3 Portable Power Station—a compact yet powerful energy solution designed for outdoor enthusiasts, RV adventurers, and those looking for a reliable backup during daily use. With a perfect balance of portability, durability, and cutting-edge technology, the EcoFlow RIVER 3 .