KONNWEI KW218 2.4 inch Color Screen Car Battery Tester About Product: 1. Battery testing is mainly to analyze the health status of the battery, calculate the actual cold start capability and aging degree of the battery, and provide reliable analysis basis for battery testing and maintenance. If the battery ages, the user can be notified in advance to replace the battery. 2. Mainly used for testing and analyzing the starter motor. Testing the actual starting current and starting voltage required by the starter motor will help determine whether the starter motor is working properly. A starting failure may cause the starting load torque to increase; or the rotor friction of the starter motor may cause the friction of the starter motor itself to increase. 3. This product checks and analyzes the charging system, including the generator, rectifier, rectifier diode, etc., to find out whether the output voltage of the generator is normal and whether the rectifier diode is working normally. If it is abnormal, it will cause the battery to be overcharged or undercharged. , resulting in rapid battery damage and greatly shortening the life of other batteries. Loaded device. 4. The car battery tester can effectively analyze and read important car data, such as voltage, internal resistance, cold start system, battery health and charging status. Functions: 1. System voltage: 6-12V 2. Test result: good, charge or replace 3. Capacity: Cold cranking ampere (CCA), DIN, EN and IEC information related to battery rating. 4. Internal resistance value (megaohms) 5. Life span percentage (%) 6. Crankshaft system 7. Charging system 8. Waveform voltage test 9. Record and playback battery data 10. Additional functions such as battery test, startup test, charging test, etc. Parameters: 1. Product size: 14x8x2cm 2. Product weight: 200G 3. Working temperature: 0-50 degrees Celsius 4. Voltage measurement range: DC 5-16V 5. Supports 8 languages: English, French, Spanish, German, Russi