1.[DATA READINGS]The KONNWEI KW208 12V car battery tester is able to effectively analyze and read important car data such as voltage, internal resistance, cold cranking amp and AH capacity, battery health and charge status. 2.[ACCURATE MEASUREMENTS]This professional automotive battery tester provides accurate results, calculates the cold cranking capability of the battery and the aging extent, allowing for a quicker, more precise car repairing. 3.[WIDELY COMPATIBLE]Beginner or expert, this car battery diagnostic tester can be used with a wide selection of 12V 100-2000 CCA regular flooded batteries, AGM flat plate, AGM spiral, as well as GEL batteries. 4.[EXTRA FEATURES]The KW208 car battery tester displays test results in text , displaying the real-time battery voltage. With an intelligent 2.inch backlit and STM32 main chip, reading access is practical and rapid System voltage 12 Volts and Voltage test in waveform Test Result Good, Recharge or Replace Capacity Cold Cranking Amps (CCA), DIN, EN and IEC information relative to battery rating. Cranking system and Charging system Record and re-play battery data. Battery test, cranking test, charging test and other additional functions. The major battery standards CA,CCA,BCL,MCA,JIS,SAE,EN,DIN and IEC are supported Support 8 Languages : English, German, French, Dutch, Russian, Spanish, Italian ,Portuguese Test Operation Steps Step 1. Connect the 12V battery, red clips to positive pole and black clips to negative pole. Step 2. Battery Test: Firstly select the type of battery to be tested, then the test criteria and the test range, and then you have the results within few seconds. Step 3. Cranking Test: After selecting the cranking test function, follow the prompts to start the engine. Test completed. Step 4. Charging Test: After enteringthe charging test function, follow the prompt to increase the speed to 2500 RPM for 5 seconds, then press OK. Test completed. Colour:black Material: ABS Package Contents: 1x KW208 Battery Tester 1x Instruction Manual Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.