New for 2018, the Dual Port USB Adapter converts the Pro Power Battery into a power source for cell phones, action cameras, and other USB charged devices. Ports offer 5V, 1A and 5V, 2.1A charging options. A threaded casing and locking nut enable the Dual Port USB Adapter to be hard-mounted onto any flat surface. The Adapter also features a glowing LED battery gauge that indicates the amount of remaining power in the Pro Power Battery. Power will automatically shut off after the charged device is full, preserving battery life.