The Associated Equipment Graphical Battery and Electrical Systems Tester, No. 12-2415, performs 12V battery and electrical systems testing, including the ripple diode test and earth ground, as well as 24V starter and alternator systems. The tester has an integrated thermal printer with customizable header for shop use as well as the ability to key-in particulars for the battery model, vehicle license plate and customer name, and is reverse-polarity protected. The unit is sold in a blow molded carrying case that holds the tester, extra paper and optional barcode scanner (sold separately). In addition, the 12-2415 has a replaceable testing cable, stores up to 70 results and can be linked to a PC for printing/data storage.