Mobile telephone charger

A mobile telephone charger comprising:

• a charger case consisting of a lower half case and an upper half case combined together, said charger case housing a circuit board fixed in said lower half case, said circuit board having an input terminal and an output terminal, a plurality of lateral slide grooves provided parallel in a partial outer surface of an end portion of said charger case;
• a plug having a front tubular portion and a rear oval lid portion, said oval lid portion having a large opening at a left side and two opposite straight lengthwise edges defining said large opening, said two opposite straight lengthwise edges engaging and able to slide in said plurality of lateral slide grooves of said charger case, said front tubular portion having conducting means;
• and
• a rear end of said tubular portion being able to be connected with said input terminal of said circuit board fixed in said charger case, a front end of said tubular portion being able to be connected with a DC source of a cigarette lighter in an automobile, said output terminal of said charger case alternatively able to be connected with an AC adapter for connecting to a mobile telephone for charging said mobile telephone, and said charger case able to be connected directly with an AC source for charging said mobile telephone without using said plug.