Specifications: The tester can test and analyze the battery load system to indicate the battery condition, including battery life percentage, CCA, battery voltage, and battery resistance, which can prevent accidental shutdown. Continuous testing with battery power will not damage the battery. And reverse polarity and over-voltage protection will make it safer. The complete CCA test range (100-1700) provides reliable and accurate operation for larger size batteries. It is compatible with most 12V batteries. And it can work quickly and accurately. Equipped with a LCD screen and fixture, along with the buzzer reminder function, it will be more durable and reliable. Item Name: Car Battery Tester Material: Plastic Features: Large Compatibility, Safe, Durable, Easy to Use Size: 12.5cm x 6.5cm x 3cm/4.9" x 2.6" x 1.18" (Application) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Car Battery Tester 1 x User Manual