Pioneering portable power company EcoFlow has launched River Rapid ($49), a palm-sized sibling to its River Mobile Power Station, providing 18 watts of USB-C power output and a 5,000 mAh capacity to keep your MacBook, iPad, iPhone, or other USB-C compatible devices powered up on the go. River Rapid comes in at a mere 3.6 ounces and features a USB-C-PD port and USB Quick Charge port, providing an extra 50 minutes of power for a MacBook Pro, or a full additional charge for an iPhone, at maximum charging speeds. River Rapid is available for purchase now on EcoFlow.com and at select retailers.