The tester allows you to quickly and accurately determine the condition of your car battery. It is compatible with 6-volt and 12-volt batteries. The device gives a complete picture of the battery's serviceability and condition, and shows whether it needs to be replaced. It also allows you to save test results and monitor the dynamics. Determines the exact starting characteristics of the battery and compares them with factory specifications. Simulates engine starting and measures voltage and start-up time. It checks battery performance when charging from the alternator. Turns on all current consumers and measures voltage under load.