CONTROLLING CIRCUIT FOR CHARGING OF BATTERY APPLIED EQUIPMENT

PURPOSE:To prevent an overcharge caused by a contact failure of terminals or a waterdrop, etc., while preventing an electrolytic corrosion. CONSTITUTION:In an electrical applied equipment in which an input terminal c1 and an output terminal d1 connected to a positive terminal a1 of an internal storage battery B and charging control means 13 are installed with the terminals c1 and d1 exposed, a connection is performed though each terminal by mounting a charging adapter 2. The charging adapter 2 stops supplying a charge by receiving a low level charging completion signal from the output terminal d1 of the charging control means 13. The charging control means 13 is designed to output a level signal for indicating the charge and the charge completion according to the level signal inputted through the input terminal c1 from the charging adapter 2. Switch means Q2 for fixing the output terminal d1 to a low level when completing the charge is installed between the charging control means 13 and the output terminal d1.