STATE JUDGING DEVICE OF LEAD-ACID STORAGE BATTERY, AND LEAD-ACID STORAGE BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a lead-acid storage battery for vehicular use with improve convenience of inspection work of a user by estimating the state of the liquid surface and informing the necessity of water replenishment to the user.

SOLUTION: The state judgement device of the lead-acid storage battery comprises a measuring means for measuring the voltage (V) between the storage battery terminals, a time duration integrating means which integrates the time (T) during which the measured voltage (V) is not lower than the prescribed value (Vr), and a display means displaying the notification demanding the storage battery water replenishment to the user when the integrated time (ΣT) obtained by the time duration integrating means is the prescribed value.

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