1、Wide Application Range: Battery analyzer is suitable for most 12V batteries, such as conventional flooded, calcium batteries, gel batteries, lithium batteries, for lifepo4 batteries, and strictly follows battery rating standards CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE, GB. 2、Cranking Charging Test: The car battery tester displays the test results of the car's starting system (actual cranking voltage and cranking time) in seconds. Tells you if the cranking system works as expected. 3、Battery Health Test: By benchmarking battery health directly, this battery analyzer provides recommendations on whether to replace the battery. In addition, cranking and charging system tests are included. 4、Comprehensive Inspection: Battery tester comprehensively inspects the 12V charging system to ensure that the generator output is normal, the rectifier diode is working normally, and the charging current is controlled. 5、Ease to Use: This car battery tester is lightweight and user friendly, compared to traditional load battery testers. Easy to read backlit screen displays results in 3 seconds. 6、Safe and Dependable: Menu driven operation, even beginners can easily use this car battery tester. The metal clip of this battery tester is covered with a rubber boot for safety use.