| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable to maintain a nonaqueous electrolyte secondary battery in a charged state for a long period of time, and restrain degradation of the same. <P>SOLUTION: A first charging step of carrying out charging at a current value boosting voltage of the nonaqueous electrolyte secondary battery, and a second step of carrying out charging at a current value decreasing voltage of the nonaqueous electrolyte secondary battery are alternately repeated. <P>COPYRIGHT: (C)2008,JPO&INPIT |
