Car charger, which charges charging batteries, is the present utility, especially being designed to charge the charging batteries of different sizes by inserting the charging batteries from the same height. Under this circumstance, it is much simplified for the charging circuit with its minimized volume as well as easily putting in and out the charging batteries.
Meanwhile, batteries holding parts in which different size batteries can be inserted at the same height inside the car charger are formed so as to achieve the functions above to cross each other and each point of contacts installed inside. The battery holding parts are not connected to one another but designed to be connected individually to the circuit. As a result, volumes, especially the thickness of the car charger are minimized. At the same time each of the batteries is charged adequately due to its types and capacities. The car charger is designed to take out the batteries easily once they are charged.