Rocketek&reg; Dual USB Car Charger Adapter with 2 Socket Cigarette Lighter Adapter DC Outlet Car Splitter &ndash; Build-in 10A Fuse Car Socket Adapter [3.1A/15.5W] It is specially made for power-hungry devices. Convert and increase your car cigarette lighter from 1 to 2 sockets as well as 2 USB ports; Multi Charging Adapter. Automatic stops charging when there is danger of overcharging or lower/over voltage with build-in fuse. Safely charge any USB powered devices, iphone/ipad port for Apple Devices (also for Blackberry) and Samsung/HTC port for Non-Apple Mobile phones (like Samsung Galaxy S4, NOTE2 and HTC ONE) or other devices.(Use your existing USB charging cables) Input DC 12V / 24V compatible without interference to Radio, Bluetooth or WiFi Free lifetime technical support and 24-month manufacturer's warranty.