Apparatus and method for controlling charge for batteries

An apparatus for controlling a charge for a battery is provided. The apparatus includes an input unit that is configured to convert alternating current (AC) input power into direct current (DC) power. A first converter is configured to store or output the DC power and a circuit unit is configured to filter or boost output power based on a normal operation state or an instantaneous power failure state of the AC input power. In addition, a second converter is configured to convert the filtered or boosted power and supply the power to a high voltage battery.