The Clarke 12V Digital Battery Tester is an easy to use digital battery tester which checks the Voltage of an automotive battery tests the charging system and cranking Amps. By attaching the two crocodile clips to the battery Voltage charging power and battery power are displayed in an easy to read format on the products LCD display providing the user with clear and precise information regarding the condition of the battery.Safety is paramount with the Clarke 12V Digital Battery tester whichPTDCLA6260108