| 摘要 |
A charger for charging portable batteries includes a housing, an internal battery charging circuit disposed in the housing and adapted to be couple to external power, an internal rechargeable battery disposed in the housing and electrically coupled to the internal charging circuit, and a portable battery charging compartment supported by the housing and adapted for receiving at least one portable rechargeable battery. An electrical circuit is coupled between the portable battery compartment on the one hand and to the internal battery charging circuit and the internal rechargeable battery on the other hand so that the at least one portable rechargeable battery and the internal rechargeable battery are charged by the internal battery charging circuit when the external power is coupled to the internal battery charging circuit. The at least one portable battery is charged by the internal battery when the external power is unavailable.
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