Patent ID: 6958954

Claim:
A device for indicating the state of a watch battery, characterised in that it comprises, in combination: a determining circuit ( 34 ) for determining at least one physical characteristic of the battery ( 10 ) which varies when it is nearly discharged; a counting circuit ( 36 ) for counting the power consumed by said watch; an assessing circuit ( 40 ) for assessing the capacity of the battery, connected to the determining circuit ( 34 ) and the counting circuit ( 36 ) and designed to process data derived from the determining circuit ( 34 ), the counting circuit ( 36 ), or a combination thereof; means for displaying the state of the battery, said means consisting of a hand ( 42 ) and a scale ( 44 ) against which said hand ( 42 ) moves, said scale comprising a first sector ( 44 a ) which indicates the quantity of power available in a range between 100 % and a non-null value, and a second sector ( 44 b ), which indicates that the battery is nearly discharged, and a controlling circuit ( 39 ) for controlling said display means, said controlling circuit ( 39 ) being designed so that it brings the hand ( 42 ) opposite the first sector ( 44 a ) exclusively so long as the physical characteristic is greater than a limit value.