The batterys tester is mainly used to measure batterys terminal voltage and internal resistance. It can be widely applied to measure various types of 12 V storage batteries. Features: The LCD display with backlight to show the digital clearly when operation. Comes with a pair of clamps, convenient to use. Built-in beep remind function, makes it more reliable. Includes accurate batterys analysis indexes of voltage, resistance, CCA value and batterys status. Continuous test with battery-power without damaging the batterys for safe operation. Complete wide CCA test range(5-9995), offers more flexibility to batterys choice. Specifications: Tester Color: Black + Yellow Material: ABS Display: LCD Screen Application Range: 12 V Storage Batterys Voltage Range: 7~15V CCA Value Range: 5~9995 Working Temperature: -20C~60C Package Size: 262*180*50mm/10.3*7.1*2in Package Weight: Approx. 330g/11.64oz Packing List: 1*Battery-Tester