Description: Universal: Car Battery Tester Analyzer is designed to test 12V or charging system voltages Car Battery Tester: This car battery tester analyze the battery conditions through battery tests and load tests, providing a reliable analysis basis for battery maintenance. LED Display Screen and LED Status Indicator: the backlight is also clear, and the measured value can be seen clearly at night or in the dark, assisting the measurement work and easy reading Positive and Negative Alligator Clips: with reverse connection alarm and overvoltage protection function, the red clip is connected to the positive and the black clip to the negative. If the positive and negative alligator clips are reversed, the LED display will not display. REVERSE: the indicator light will be on and an alarm will be issued Small and Portable: Compact is size and easy to carry,high sensitivity, fast reaction speed, Quick and easy to operating. Specification: Material: ABS plastic Size Chart: Tester: 20cmx7cmx2cm/7.87inchx2.76inchx0.79inch Total clip length: 6.6cm/2.60inch, Clip mouth length: 1cm/0.39inch, Line length: 31cm/12.20inch Package Includes: 1 Tester 1 Manual(4 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.