Abstract: This invention relates to a mobile electronic device and a power management method of a battery module thereof. The mobile electronic device includes a battery module, a charging/discharging module, and a control module. The charging/discharging module is coupled with the battery module. The control module is coupled with the battery module and the charging/discharging module. When the power supply is coupled with the mobile electronic device and the system time is not within a maintenance period, the control module controls the charging/discharging module to maintain capacity of the battery module within a first capacity range. When the power supply is coupled with the mobile electronic device and the system time is within the maintenance period, the control module controls the charging/discharging module to maintain the capacity of the battery module within a second capacity range.

Abstract: A mobile communication apparatus is provided. The mobile communication apparatus includes a speaker, a sound receiving unit, an audio signal processing unit, and a control unit. The sound receiving unit provides an audio signal based on external sounds. The audio signal processing unit is connected to the speaker and the sound receiving unit to receive the first audio signal from the sound receiving unit and output a coded audio signal to the speaker. The control unit is connected to the audio signal processing unit and provides a control signal, wherein the control signal corresponds to a pre-determined mode. The control unit controls the audio signal processing unit to stop outputting the first audio signal to the speaker based on a first control signal.

Abstract: This invention relates to a mobile electronic device and a power management method of a battery module thereof. The mobile electronic device includes a battery module, a charging/discharging module, and a control module. The charging/discharging module is coupled with the battery module. The control module is coupled with the battery module and the charging/discharging module. When the power supply is coupled with the mobile electronic device and the system time is not within a maintenance period, the control module controls the charging/discharging module to maintain capacity of the battery module within a first capacity range. When the power supply is coupled with the mobile electronic device and the system time is within the maintenance period, the control module controls the charging/discharging module to maintain the capacity of the battery module within a second capacity range.

Abstract: An electrical device is provided. The electrical device of this invention includes a voltage control circuit that couples with an AC-DC adapter and a charger. The voltage control circuit uses the charger to determine the condition of the battery and controls the AC-DC adapter to generate different output voltages by the conditions of the system loading and the battery. The electrical device can be used for portable equipment.

Abstract: An electrical device is provided. The electrical device of this invention includes a voltage control circuit that couples with an AC-DC adapter and a charger. The voltage control circuit uses the charger to determine the condition of the battery and controls the AC-DC adapter to generate different output voltages by the conditions of the system loading and the battery. The electrical device can be used for portable equipment.