Patent ID: 6653843
Filing Date: 2003-11-25
Classification: G01F,H01M,Y02E

Abstract:
An apparatus for detecting a reduction of a level of electrolyte in a wet cell battery comprising:an electrically conductive sensing rod adapted to be disposed within a cell of a battery in contact with an electrolyte in the cell; a voltage comparator means having an input connected to said rod and having output, said voltage comparator means generating a first output signal when a voltage at said input is greater than a reference voltage and generating a second output signal when a voltage at said input is less than the reference voltage; an indicator means being responsive to said first output signal for generating a first visual signal and being responsive to said second output signal for generating a second visual signal whereby when said rod is immersed in the electrolyte, said first visual signal is generated and when said rod is not immersed in the electrolyte, said second visual signal is generated; a circuit housing enclosing said voltage comparator means and said indicator means, said circuit housing being generally cup-shaped with an open end closed by a cover; and an audio alarm device connected to said output of said voltage comparator means and being responsive to said second output signal for generating an audio indication, said audio alarm device being positioned in said circuit housing and said cover having at least one sound opening formed therein.