Patent ID: 7411373

Claim:
A power supplying apparatus for supplying power to a charging/discharging apparatus, comprising: receiving means for receiving internal temperature data of said charging/discharging apparatus transmitted from said charging/discharging apparatus; temperature measuring means for measuring an internal temperature; power supplying mode changing means for changing power supplying modes of the power to be supplied to said charging/discharging apparatus based on said internal temperature data of said charging/discharging apparatus received by said receiving means or said temperature data measured by said temperature measuring means; and ambient temperature measuring means controlled by a thermistor that obtains an ambient temperature of the power supplying apparatus and determines the ambient temperature within one of three ranges, the ranges including below a lower limit, above an upper limit, and between a lower limit and an upper limit; and display means for displaying, when the ambient temperature drops below the lower limit, an indication that there is a charging alert, an indication that the ambient temperature is low, and an indication that charging is currently performed in a low temperature small current charging mode, and for displaying, when the ambient temperature is determined to be above the upper limit, an indication that there is a charging alert, an indication that the ambient temperature is high, and an indication that charging is currently performed in a high temperature small current charging mode, wherein when the ambient temperature is determined to be below the lower limit, a microcomputer switches to a small current charging mode power source and said charging/discharging apparatus receives power from the small current charging mode power source, wherein when the ambient temperature is determined to be above the upper limit, a microcomputer switches to a small current charging mode power source and said charging/discharging apparatus receives power from the small current charging mode power source, and wherein when the ambient temperature is determined to be above the lower limit and below the upper limit, a microcomputer switches to a charging mode which is quicker than a small current mode.