AA Battery Enclosures New Age Enclosures Mini AA Battery Box features a snap-shut battery hatch. The enclosure accommodates a 1.86'W x 2.78'L PCB board, providing maximum space for electronic components. The standard units are injection molded in white or black ABS 94HB RoHS compliant plastic. New Age Mini AA Battery Box is ideal for small portable devices requiring a self-contained power supply.