2 In 1 Strong Combination: KW681 Auto Battery Tester and Code Reader = 6V 12V Battery Tester + OBDII Car Code Reader               Why choose KONNWEI KW681 car diagnostic tool?    1. OBD2 scanner functions: turns off check Engine Light ( MIL ), clears codes and resets monitors.    2. Professional 6V & 12V battery tester: Battery Health Test, Cranking Test & Charging Test    3. Feature the unique patented One-click I/M Readiness or Waveform for quick State Emissions readiness.    4. Display complete live data stream or voltage waveform in digits and graph format, RGB color screen    5. Advanced O2 sensor test, EVAP test, Modes 8 Test; Model 6 on-board monitoring function can help you pinpoint which cylinder has a misfire issue.    6. Red-Yellow-Green LEDs and built-in speaker provide both visual and audible tone for readiness verification.    7. Provides quick and accurate testing of most types of 6V 12V batteries, including regular flooded, AGM flat plate, AGM spiral and gel.    8. Retrieves vehicle information (VIN, CID and CVN).    TIPS: Works on all OBDII/EOBD compliant car, light-duty trucks, SUVs, minivans and hybrid sold worldwide.    Supported Protocols:    J1895-41.6, J1850-10.4, ISO9141, KWP2000 ( ISO 14230 ), and CAN ( Control Area Network ISO 11898 )                       1. Strong Capacity: Works on 6V&12V batteries, battery ratings from 100 - 2200 CCA, car battery tester also starter and alternator;    2. Test Multiple Battery Types: regular flooded, AGM flat plate, AGM spiral and gel;    3. Color screen, support both in-vehicle and out-of-vehicle test, no need to remove the battery;    4. Test Standards: CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE and GB;    5. Test result: SOH, SOC, CCA value, CCA rating, voltage, internal resistance, etc;    6. Provide reliable results within seconds, display suggestion according to the testing results (Good, Recharge, Replace), detects bad cells directly;    7. Polarity reverses connection protection; reminder light    8. Support 9 languages: English, Russian, French, Spanish, German, Italian, Portuguese, Dutch, Polish.    9. Print data & Lifetime free update service;    10. Suitable for automobile factory, garage, auto battery manufacturer, and DIY enthusiasts, etc.     WAVEFORM: DISPLAY VOLTAGE IN GRAPH Display voltage readings in a chart to better analyzing the status of your car battery You could playback the waveform in tester or upload to computer for more precise analysis. Provide 5 kinds of professional advice accordingly: GOOD BATTERY: The battery is without any problem, use it without worries GOOD, RECHARGE: Good battery but low current, recharge before using. REPLACE: The battery is already or near to reach the end of the using life, please replace the battery. BAD CELL, REPLACE: Battery interior damaged, bad cell or short circuit, replace the battery. CHARGE-RETEST: Unstable battery shall be recharged and retested to avoid error.