Charger with removable cap

A charger comprising:

• a housing defining a receiving cavity and comprising an open end defining an opening communicating with the receiving cavity;
• two through holes defined in a sidewall of the housing and communicating with the receiving cavity, the through holes arranged at opposite sides of the receiving cavity;
• two slots defined in an inner surface of the housing in the receiving cavity, the slots being located between the through holes and the open end;
• two receiving grooves defined in the inner surface of the housing in the receiving cavity;
• a fuse received in the receiving cavity;
• a spring member received in the receiving cavity and abutting against a first end of the fuse to apply a pushing force to the fuse;
• a cap movably coupled to the housing, the cap comprising a main body and two elastic arms protruding from the main body, the cap defining an orifice, the elastic arms each comprising a hook;
• and
• an anode contact in contact with an opposite second end of the fuse, the anode contact comprising a base and a contact head protruding from the base, the base engaging with an inner surface of the cap, and the contact head passing through the orifice of the cap;
• wherein the cap is disposed in a first locking position where the hooks engages in one ends of the through holes thereby preventing the cap from detaching from the housing;
• and the hooks are disengageable from the through holes when pushed by a pin inserted into the through holes, thereby allowing the spring member to push the cap to move outwardly to a second locking position where the hooks engage in the slots;
• the slots and the hooks are structured and arranged in such a way that when the cap is rotated a predetermined angel, the cap is movable from the second locking position to a third releasing position where the hooks are slidably received in the receiving grooves, thereby allowing the cap to be detachable from the housing through the opening.