KONNWEI BK200 6V12V 24V car battery tester is able to effectively analyze and read important car data such as voltage, internal resistance, cold cranking amp, battery health, and charge status. It provides accurate results, and calculates the cold cranking capability of the battery and the aging extent, allowing for a quicker, more precise car repair. Compatible with All 6V12V 24V Car Batteries: There is no need to disassemble the battery, and it can be tested directly on the car LED Indicator: Prompt red means it is connecting. The blue indicator light indicates a successful connection Integrated Design of Wire and Machine: The interface is stable to prevent falling off, and the wire is strong and not easy to break Copper-Plated Alligator Clip: Pure copper-plated material, large mouth opening, strong bite force, more accurate testing 13 Languages: Chinese, English, German, French, Japanese, Dutch, Russian, Spanish, Italian, Persian, Portuguese, Polish