On the car charger 12V\/24V, it means that 12V or 24V power can be charged. Car charger is to facilitate the owner to use the car charging source to charge digital products anytime and anywhere accessories. Some high-end car chargers generally include 2 USB interfaces, which can charge two digital products at the same time. Such products generally have overload protection, short circuit protection, high voltage input protection, high temperature protection, four safety protection functions to ensure safe use. Car charger in the car at the same time, but also home, to achieve car charging, direct charging, USB charging three-in-one multi-functional use.