| 摘要 |
<p>A charging circuit and a charging method ensuring a stable charging operation. The method for charging a battery from a charging power supply by constant current constant voltage charging system comprises a step for performing constant current charging at the time of constant current charging by increasing the charging current stepwise at every predetermined current level, and a step for stopping increase of charging current when the fact that the supply voltage of the charging power supply is lowered to a predetermined lowest chargeable voltage predetermined by the battery is detected and sustaining charging while sustaining the predetermined lowest voltage.</p> |
