| 摘要 |
In a method of judging the life of a rechargeable battery, the rechargeable battery being used while charge and discharge are repeatedly performed therefor, an internal resistance (R) is measured in a state in which a remaining power of the rechargeable battery during a charge phase of the rechargeable battery becomes in the range of 30 to 85% of the capacity in a full charge state, and the life of the rechargeable battery is judged based on a change of the value of the internal resistance (R) with passage of time.
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