| 摘要 |
PROBLEM TO BE SOLVED: To shorten the charging time of a secondary battery. SOLUTION: A resistance value r of the internal resistance of a secondary battery 4 being charged is measured, and then the secondary battery 4 is charged at constant current I, and charge is finished when voltage V between terminals of the secondary battery 4 reaches voltage Vf+r×I obtained by adding voltage r×I obtained by multiplying the resistance value r by the constant current I to full charge voltage Vf. COPYRIGHT: (C)2006,JPO&NCIPI
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