| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery tester for a lead storage battery which is easy to reduce the size having a simple device configuration, capable of determining the quality, in a manner similar to that of the case where a discharge test is actually performed.SOLUTION: The battery tester 10 for a lead storage battery for measuring conductance, by making a battery BT perform rectangular wave pulse discharging, and determining the deterioration state of the battery BT, includes a closed circuit voltage measuring circuit for measuring the closed circuit voltage of the battery BT, and determines that the lead storage battery is a non-defective product, when thee difference between the closed circuit voltage after the rectangular wave pulse discharge and a closed circuit voltage, after allowing execution of the rectangular wave pulse discharge as many as the prescribed number of times determined, beforehand experimentally or less, is lower than a quality determining voltage difference that is determined beforehand, after being determined as being a non-defective product by the measurement of the conductance. |
