Summary A9252 Battery housing for some Black and Decker power tools. Fill with NiCd / NimH cells per specification. Post-Printing Tapping and Sanding Tap the holes in the Lower Housing, and sand down the clip's and side holes for the clips to get good movement. Use flat screws to connect the upper and lower housings. Depending on what battery cells you place inside, you will need to create the metal contacts and adjust the housing top that connects to the drill to your needs.