This 12V/24V Automotive Battery Tester for Lead Acid Battery is capable of testing 12 and 24 volt lead acid batteries. It supports 10 evaluation standards including CCA, DIN, JIS, EN, IEC, GB, SAE, MCA, BCI, CA. In addition, the battery analyzer has been improved to include reverse polarity protection, over-voltage input protection, and looseness detection to ensure safety and convenience during testing.