What the ANCEL BST60 12V Car Battery Tester Can Do? 1.Battery Voltage Test 2.Battery Power Test 3.Charging Test The Advantage of ANCEL BST60 12V 1.Quick Test 2.Widely Applicable 3.Over Current Protection 4.Reverse Connection Protection 5.12V Voltage Details: Battery Test: 1. Keep the engine off. 2. Connect the tester to the battery through alligator clips or cigarette lighter test line, and the battery voltage value will be shown on the screen. ※ Test with cigarette lighter socket: please insert the cigarette lighter of the tester into 12V DC cigarette lighter socket of the vehicle. ※ Test with alligator clips: please connect the red alligator clip of the device to the positive pole (+) of the battery, and connect the black alligator clip to the negative pole (-) of the battery. 3. Turn off all electrical equipments and keep it for a while, and wait for the voltage to stabilize. 4. Press the “Battery” button to enter the battery test function. At this time, the screen shows the voltage value and the test result. ※ If the “LOW” light is on, it means that the battery power is very low and needs to be charged as soon as possible. Voltage: