Patent ID: 7439707
Filing Date: 2008-10-21
Classification: H01M,H02J,H04N,Y02E

Abstract:
1. A charging device for charging a battery having a secondary cell and an electronic circuit outputting predetermined identifying information, the charging device comprising: a charging circuit configured to charge the secondary cell; a charge terminal configured to supply power for charging from the charging circuit to the secondary cell; a power-supplying terminal, which is different from the charge terminal, configured to supply power to the electronic circuit before charging the secondary cell; a reception terminal configured to receive the identifying information from the electronic circuit; an instruction circuit configured to limit supply of power from the charging circuit to the charge terminal before the identifying information is received by the reception terminal; a determination circuit configured to determine whether the identifying information received through the reception terminal is authorized identifying information; and a controller configured to control the charging circuit so as to stop charging the secondary cell in response to an amount of charge in the secondary cell having been reached at a target setting, wherein the target setting is set to a first setting when the determination circuit determines that the received identifying information is the authorized identifying information, and set to a second setting, smaller than the first setting, when the determination circuit determines that the received identifying information is not the authorized identifying information.