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What Is Normal Voltage For 12 Volt Car Battery. The closer the voltage is to 13 volts the closer the battery is. A 12 Volt battery contains 6 x 2 volt cells but 12v is the nominal voltage.
Car Battery Voltage Chart Range Testing Tontio Com from tontio.com
First while your battery is called a 12 volt battery if it has only 12 volts it is significantly discharged. When the battery is not being charged and not delivering charge to a load this is the rule of thumb. Running cars have alternator voltage regulators set between 135 and 16V.
When any 12-volt battery is discharged below 124 volts sulfation begins to occur within the battery.
A typical car battery is around 40AH which means you shouldnt drain 4AH about 50 watt hours before charging again so perhaps do not go below 125 volts or so. All is well with the voltage youre seeing. Alternators typically put out 138 volts. Fully-charged our REDTOPs including 34M BLUETOP will read approximately 126-128 volts and our YELLOWTOPs will read approximately 130-132 volts including BLUETOPs with light gray cases.
