1Universal Tester: The battery tester can test all 12V 100?2000CCA batteries, including regular flooded, Agm flat plate, Agm spiral, or gel batteries, to provide a comprehensive analysis of battery health and help you know their status in advance. 2Clearly Display Battery Data: The 12V battery load tester provides you with basic battery parameters, such as voltage, internal resistance, cold cranking amp and Ah capacity, battery health and charge status. 3High Accuracy: Thanks to the powerful and intelligent chip, battery checker provides more than 99.5% accurate test reports in milliseconds. Compared with other battery testers, it greatly improves the test speed. 4Plug and Play: The battery load analyzer allows you to test the batteries inside and outside the vehicle, or even the exhausted batteries. Just connect the clip of the tester to the battery, and you can open and prepare to test and analyze the battery. 5Starter and Alternator Tester: This is not only a battery load tester for testing cranking and charging system batteries, but also for testing alternator's charging and starter's cranking conditions.