How to Determine the Quality of a Car Battery?
1 Answers
Methods to determine the quality of a car battery: 1. Inspect the appearance for any deformation, leakage, or burn marks, and check for oxide seepage at screw connections; 2. Conduct a load test—if the battery shows no visible abnormalities but discharges significantly faster than a normal unit under a certain load and fails to restore normal backup time after charging, it indicates battery aging; 3. Measure the terminal voltage of each battery in the pack—if one or more batteries show terminal voltages significantly higher or lower than the nominal voltage, it suggests battery aging; 4. Check the charging voltage of each battery in the pack—if one or more batteries exhibit charging voltages higher or lower than others, it confirms battery aging.