Car charger is very small and practical, it is easy to install and use, as long as there is a cigarette lighter jack in the car.  To charge devices such as mobile phones and navigators, just unplug the cigarette lighter with a cigarette logo, connect the device to the car charger with a charging cable, and then plug it into the cigarette lighter jack of the car.  Safety precautions of car charger: 
 
1. The vehicle cannot be charged when the engine is turned off (the car battery is used at this time). 
2. It is forbidden to connect charging when the vehicle is ignited and started (to prevent the instantaneous large current at the start of the device from burning out) 
3. Try to reduce the simultaneous charging of multiple devices, and try to avoid charging high-power devices (too much load). 
4. Charge after starting Note that after the engine starts, plug in the device to charge.  When the car ignition low electricity, will affect the charging effect, and even damage the car charger. 
5. Reduce the use of high power. Do not supply power to more than three devices at the same time.