In my car I have two USB ports that are 5v and 2.4 amp only per port. I need a higher output than 12w. Using a cigarette lighter adapter is really not an option, nor taking the center console apart to run a 12v line new USB ports. What I'd like to fing is a charger that will take in the two 5v 2.4amp ports and plug them into a device that will take the total 24w and up the voltage to quick charge 2.0, 3.0 or USB-pd to a single USB port.