| 摘要 |
In a battery pack, it is required that information on a contained battery (23) of the battery pack, such as the accurate state of charge of the battery (23), can be detected by external equipment (27). A communication terminal (24) which can communicate the state of charge of the contained battery (23) to the external equipment (27) is provided on the installation surface on which power supply terminals (25,26) of the battery pack are provided or on a surface adjacent to the installation surface e.g. near the negative power supply terminal. This configuration allows the corresponding electrodes (30,31) or the like of the external equipment (27) to be concentrated at one place, so that the space required to arrange the corresponding electrodes (30,31) or the like is reduced, thus allowing for downsizing of the external equipment (27). <IMAGE> |
