Normal Car Battery Voltage
1175-1189 volts means your. A car using a standard 12 volt DC battery will normally have 12 volts or a little higher showing on a meter when the car is not running. Normal Car Battery Voltage Off 73 Www Gmcanantnag Net Ideally you should never let your power source reach below 50 SOC meaning that you should keep it at 121V or higher looking at the chart above. . Once that reaches 12V or below that power unit is considered dead. Find Parts Fit for Your Vehicle Budget. When the engine is running this measurement should be 137 to 147 volts. It will drop to 124 volts when the charge is 75 and 12 volts when it is at 25. During that time the alternator of your vehicle is busy charging the battery. If the voltage isnt within spec perform a voltage drop test to determine the condition of the terminalpost connection. Ad OE Quality Replacement Batteries Accessories. Having a car battery go dead is a major inconvenie...