TOPDON BT100 Car Battery Tester 12V Load Tester 100-2000 CCA Automotive Alternator Tester Digital Auto Battery Analyzer (Black). TOPDON BT100 Car Battery Tester 12V TOPDON BT100 is a handy tool which allows you to check the battery status quickly and without spending so much on mechanic fees. Whether you are a professional car electrician or the proud owner of a home garage, you need this tool in your arsenal. You never know when your car battery would fail and this tool will help you diagnose it in seconds. Use TOPDON BT100 to see whether your car battery is OK. BATTERY TEST : Display SOH (State of Health), SOC (State of Charge), Voltage, Current, Rating, and the readable analysis results on backlight LCD screen and smart 3 LED indicators; CRANKING TEST : Analyzes the actual cranking voltage and the cranking time to help you quickly figure out the whole state of the starting system; CHARGING TEST : Test different parts of charging system, including generator, rectifier, rectifier diode, and so on for a reliable charging volt value. Run Multi-tests in One Button – All-in-one car battery tester with cranking and charging system test, load and alternator checking. Design for Dummies – Unique smart 3 LED indicators directly show the battery status whether it is good, bad, or need to recharge. Fast Accurate Results – High precision amplifier and calibrated by professional instruments give you the reliable results in seconds! In / Out of Vehicle – Two test modes, support both in and out of vehicle test. Support Muti-languages – Support 6 languages. English, Russian, Spanish, French, Italian, and German While we aim to supply accurate product information, it is sourced by manufacturers, suppliers and marketplace sellers, and has not been provided by Overstock.