Measurement range from 100-1400 CCA. Accurate battery test decision in seconds. No user interpretation required. Voltmeter mode for testing both the starter and the charging system. Shows available power in CCAs at the end of each test. Bad cell detection. High/low voltage capture for improved starter/charging system testing. Green and red LEDs give fast decisions on starter and charging system testing. Starter system testing: pressing the down arrow displays the captured voltage from cranking the engine. Charging system testing: pressing the up arrow displays the captured high voltage from the alternator.