Posts Tagged: car battery CCA test

Car Battery Tester Results Explained

Understanding Battery Test Results: What CCA, Internal Resistance, SOC, and SOH Mean Quick Summary When I test a car battery with a digital tester, I’m looking at three core things: state of charge, cranking ability (CCA), and internal resistance/conductance. A healthy battery will show strong Cold Cranking Amps (CCA), low internal resistance, and stable voltage under load. As a rule of thumb, internal resistance below 5 milliohms is excellent, 5–10 mΩ is acceptable, and anything higher usually means the battery is on borrowed time. For CCA, I expect the battery … Read More