Carviya Car Motorcycle 12V-24V Dual Hole Cigarette Lighter Power Supply Adapter Dual USB Charger Socket Panel Plate Mount Outlet Double USB socket, cigarette lighter can charge the battery with USB support for many electronic products. With a waterproof cover, can be covered with rubber cover to dustproof and waterproof when didn't use. Can timely grasp the battery voltage is within the scope of normal use.