Product Description： KONNWEI KW210 is the newest battery tester upgraded from the old classic backlit tester in the market, aiming at check battery health fast and accurately, as well as check the alternator working status. It's a professional vehicle diagnostic tool for checking your battery system issues by using the graphing voltage monitoring tool, with its color screen and unique pattern design, life time free update service, the KONNWEI KW600 is a perfect battery testing tool for your job and the family. Feature: Fast and smooth running speed with STM32 chip set hardware. Identify battery status Good or Replace. Check Battery Capacity - Cold Cranking Amps (CCA), DIN, EN and IEC information relative to battery rating. Check Internal resistance value (m) . Display Life in percentage (%) . Battery Cranking Test, load test Battery Charging Test, Ripple Test. Graphing voltage real time monitoring. Test results storage and review. Print test results and battery report on PC. Life time upgrade free. Supp