Aneng Bt175 Car Battery Tester.

It offers quick and accurate tests for both 12V and 24V batteries. It is compatible with various battery types, including STD, AGM, GEL, and EFB. The device provides precise measurements for Cold Cranking Amps (CCA) from 50-1999 and Amp-Hours (AH) from 3-200. It performs cranking and charging system tests to assess overall vehicle performance. The tester does not require an internal battery or external power supply to operate.