| 摘要 |
According to certain embodiments, an apparatus and method for charging a battery pack for an electronic apparatus includes an earphone connection unit, a charge determining switching unit, a charge circuit, and a control unit. The earphone connection unit is configured to be connected to the electronic apparatus to selectively receive one of an earphone unit for an earphone mode and the spare battery pack for a charge mode. The charge determining switching unit is configured to switch to one of the earphone mode and the charge mode according to the unit connected electrically to the earphone connection unit. The charge circuit is configured to open a charge path for charging the spare battery pack with an external voltage applied to the electronic apparatus, according to the switching of the charge determining switching unit. The control unit is configured to measure a resistance value of the spare battery pack applied to the charge determining switching unit, switches the mode, and opens the charge circuit. |
