How To Put Together a Battery Materials Cut off the corners of the piece in order to have it fit. After Cutting. Place connector piece on battery Insert bolt with and split washer through connector piece. Screw in the nut with a washer on the other side of the bolt. Attach the end of the battery cable through the connector piece. Screw in the screw on the connector piece in order to secure the battery wire. After attaching battery wire. Put electrical tape around the connector and all exposed metal. After tapping. Repeat the process for the other side of the battery. Grant Approved!