●Test battery CCA, voltage, internal resistance, health and charge. ●Display test result: Good battery, good battery & recharger, charge &retest, replace, bad cell & replace. Support all battery standards, like JIS, DIN, IEC, EN, SAE, CA, CCA, GB, BCI, MCA. Battery test, cranking and charging(alternator) systems test can be operated via app.Test in & out of vehicle. Battery life analysis.