How to Test a Car Battery: Simple DIY Methods for Voltage Checks Without a Tester
To test a car battery, first, turn off the vehicle and disconnect the battery terminals. Use a multimeter to check the voltage; it should be above 12.4 volts. Next, conduct a load test with a carbon pile tester for 15 seconds. If the voltage drops below 9.6 volts during the test, the battery may need … Read more