How To Test Car Battery Cells With Multimeter. First the range of the multimeter should be set at 20V on the DC side. To connect the 9-volt battery to the speaker terminals you will need two single conductor cables.
If not were going to have to diagnose the problem. Therefore a car battery is considered fully charged at 126 volts or higher when the engine is off. Your car battery is necessary to propel the starter motor and get the engine revved up.
Testing your car battery with a multimeter is the easiest and most effective way to get the job done.
Using a Multimeter to Test a Car Battery Set the multimeter to 15-20 volts. Find the car battery. Connect the multimeter to the positive and negative battery terminals. Read the multimeter display.
