a battery cover fixing mechanism is provided for coupling a cover to a housing of a portable electronic device . the battery cover fixing mechanism includes a blocking mechanism , an opening , a latching mechanism , a slot and a cutout . the cover forms the blocking mechanism and defines the opening . the housing defines the slot and the cutout . the latching mechanism includes a block , an elastic member , a slider having a blocking part , and a holder fixed to the housing . the slider is slidably attached on the holder . the block is fixed on the slider and extends through the cutout and the opening . the blocking mechanism of the cover engages in the slot of the housing and with the blocking part of the slider . two ends of the elastic member are respectively attached to the holder and the slider .