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How to Determine the Condition of a Car Battery?

1 Answers

Evie

07/25/25 8:46am

Methods to determine the condition of a car battery: 1. Check the inspection port: The colors typically visible in the inspection port are green, black, and white. Green indicates sufficient charge, black indicates slight discharge, and white means the battery is dead and needs replacement. 2. Measure voltage: Use a battery tester or multimeter to measure the battery voltage. Under normal conditions, the no-load voltage should be around 13 volts, the full-load voltage should not drop below 12 volts, and the starting voltage should not be lower than 9.5 volts. 3. Inspect the appearance: Look for obvious swelling or bulging on the sides of the battery. Also, check around the battery terminals for any white or green powdery substances. If present, it indicates that the battery's performance is starting to deteriorate.

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