Device indicating the state of batteries designed to equip a watch

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 (44a) which indicates the quantity of power available in a range between 100% and a non-null value, and a second sector (44b), 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 (44a) exclusively so long as the physical characteristic is greater than a limit value.