Battery controlling apparatus for a vehicle

A battery controlling apparatus for a vehicle for carrying out constant current control for charging a battery incorporated in a vehicle to a predetermined voltage with fixed current and thereafter carrying out constant voltage control for charging the battery while maintaining the predetermined voltage and reducing the current, comprising:

• a charging rate detection section adapted to detect a charging rate of the battery upon starting of the constant current control;
• an elapsed time measurement section adapted to measure elapsed time from starting time of the constant current control;
• a timeout setting section adapted to set a timeout period of the constant current control based on the charging rate detected by said charging rate detection section;
• and
• a current cutoff section adapted to cut off the current to be supplied to the battery when the elapsed time measured by said elapsed time measurement section upon the constant current control exceeds the timeout period set by said timeout setting section.