Intelligence charging seat of PDA or cell phone

The utility model discloses a smart charging base for PDA or mobile phone, including a base body and components arranged on the base body which include a power input interface used for external connection with AC-DC adapter, a USB interface, a connector connected with PDA or mobile phone and a battery charging unit; the power input interface are connected with the power supply terminal of the connector and the charging input terminal of the battery charging unit at the same time; the USB interface is connected with the USB socket of the connector, meanwhile, the power supply terminal of the USB interface is connected with the input terminal of the battery charging unit; the battery charging unit charges for the backup battery; the signal terminal of the connector is used to connect voltage enable signal of PDA or mobile phone. The utility model allows charging for PDA or mobile phone with USB interface and AC-DC adapter simultaneously, and can also charges for the backup battery at the same time with smart charging current choice. Moreover, PDA or mobile phone can communicate with PC in the process of charging; the utility model has simple structure, low cost and strong scalability.