Patent ID: 6154007
Filing Date: 2000-11-28
Classification: H02J

Abstract:
A rapid battery charging system comprising:a working battery;a charging battery electrically coupled to the working battery to thereby charge the working battery, the working battery being portable and detachable from the charging battery for coupling with a working apparatus to power the working apparatus; anda charging unit, electrically coupled to the charging battery, the charging unit converting ac current to dc current to charge the charging battery, the charging battery being portable and detachable from the charging unit for use in charging the working battery,wherein the number of cells in the charging battery is greater than the number of cells in the working battery, thereby producing a rapid charging current to charge the working battery, andwherein the series voltage of the number of cells in the charging battery is less than or equal to the maximum rated voltage of the working battery, thereby avoiding overvoltage damage to the working battery.