How To Read Car Battery Voltage. Touch one probe to the positive terminal and the other to the opposite terminal. When the engine is running this measurement should be 137 to 147 volts.

Checking the voltage of your car battery with a power probe is relatively simpler as you dont need to set it to any specific settings. Basically you want the battery to read 126 V or higher after resting if it is to be in good condition and fully charged. Look at the voltmeter while the engine is running.
How To Check Your Car Battery Voltage Using a Car Battery Tester.
Set your meter to DC volts. You will need a voltmeter for this. Testing Car Battery Without Multimeter. Measuring your car batterys voltage can be a great way to determine how charged your battery might be.

