Question: What Is The Voltage Of A Dead 12 Volt Battery??

Playing in between the voltage charge ratings between 12.1 volts to 12.9 is a safe place—12.4 being an ideal to keep maintenance.

Is 12.4 volts OK car battery?

Though not fully charged, a car battery is considered charged at 12.4 volts or higher. It is considered discharged at 12.39 volts or less. Note: A fully charged specific gravity of 1.265 corrected to 80°F is assumed.

How many volts should a car battery lose overnight?

When a car drops, for instance, from 12.6 to 12.0, there will be 75% difference. Its power drops from 100% to 25%. At 12.4 volts, a car battery is 75% charged while at 12.2 volts its 50% charged. Consider your car battery charged at 12.4 volts or higher and discharged at 12.39 volts or less.

Can a car battery be bad even if it reads 12 volts?

If the voltmeter reads 12.4 volts or higher, the battery is fine and the problem lies elsewhere. Start your car. If the vehicle is reluctant to “turn over,” it could mean that the battery lacks the cold-cranking amperage (CCA) to start the car.

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