This automotive battery tester is mainly used to test and analyze 12V batterys including CCA value, AH value, voltage, internal resistance and batterys life percentage. It can be widely applied to measure different kinds of 12V storage batteries. Very easy to understand and use, even for beginners. Features: Accurate analysis of 5 Accus voltage indices, resistance, AH (batterys capacity), CCA value and batterys status. Continuous test with battery power without damaging the batteries for safe operation. Large LCD display with bright backlight to clearly show results when testing 12V batterys. Come with a pair of heavy duty Accus clamps, convenient for testing car, motorcycle, vehicle, boat batterys condition. Built-in beep remind function, makes it more reliable when test and final analysis. A wide test range CCA (0~1995) and AH range (0~199.5), provides greater flexibility in battery selection. Features: Tester Color: Black+Red Material: ABS Display: LCD Screen Application Range: 12V storage batterys Voltage Accuracy: 0.03V Resistance Accuracy: 0.3m Low Battery Indication: 12.4V0.1V Voltage Range Rating: 7~15V CCA (Cold Cranking Amps) Value: 0~1995 AH (Battery Capacity) Value: 0~199.5 Batterys Life Percentage: 0~100% Cord Length: 830mm Operating Temperature: 0~50 Storage temperature: -20~60 Package size: 270 * 192 * 55mm / 10.6 * 7.6 * 2.2in Package weight: 322G / 11.4oz Packing list: 1 * Digital Accus Tester & parser