Due to the low voltage automotive supply, so just have a car charger internal overload protection circuit can be. The front end of the car charger socket design have a insurance tube.

When the current exceeds the overload protection circuit can withstand the range of fuse immediately, play a protective role. Note: You must only be charged in the car when the engine is started! About charger, there are the following considerations:
1, do not use the car charger in humid environments
2, do not put car charger stored in a humid environment
3, the use of a suitable temperature is 0-45 ℃
4, far away from children
5, avoid lightning
6, fully charged to promptly pull the plug

So, for safety reasons, be sure to buy the regular brand, buy genuine, inferior products prone to security risks.
Car charger can be divided into two kinds one is direct charge and another is cradle. You can choose to buy the cradle, which removed the battery then charge, avoid the vehicle power supply is not stable. High voltage output peak will burn mobile phone situation, although burn it is burn the battery not the phone. There are a variety of car chargers to choose from. If you choose online shopping, it must go to a regular website to buy.

Car Charger for the convenience of owners to charge anytime, anywhere. With a car power charging accessories for digital products, saving you the cost of the battery. These products generally have with overload protection, short circuit protection, high voltage input protection, high temperature protection, four heavy security protection features to ensure you can safely use.

Check Etekcity 2 Pack MK326 10W/5V/2A Dual USB High-Output Travel Car Vehicle Charger at Amazon: http://www.amazon.com/dp/B00FTV12SY.