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What Should Car Battery Voltage Be When Cranking

What Should Car Battery Voltage Be When Cranking. Is 12.3 volts enough to start a car? Mine with a decent sized healthy battery and good starting drops to about 11.4v with no heaters,.

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During the actual engine turning the starting motor is drawing about 3200 watts. The average cranking voltage was 11.28 volts, with the minimum at 11.16 volts. Even cranking volts perimeter can be.

You Can Test For Proper Cranking Voltage With A Voltmeter While Cranking The Engine.


When the car is running. The battery voltage should remain 9.6 volts or above. The several hundred amperes of current the starter motor draws should pull the battery voltage down to a normal 9 to 10 volts.

If The Battery Is Fully Charged (According To The Battery Charger) But The Voltage Is 12.5 Or Less, The Battery Is Sulfated.


On average, a car battery lasts from 5 to 7 years. Even cranking volts perimeter can be. To get a true voltage reading of the cars battery it is important to measure the voltage after the car has been sat for a period with the engine off, preferably overnight, this provides you with the “car battery open circuit voltage” or also know as the “resting voltage”.

We Mentioned This Parameter Is Changeable, Sometimes From 13.7 To 14.7 Volts.


Is 10 volts enough to start a car? As the battery discharges the voltage will sag down to 10 volts or lower. At first it drops to about 4.2v, then recovers to about 8v during the actual cranking.

The Several Hundred Amperes Of Current The Starter Motor Draws Should Pull The Battery Voltage Down To As Low As 9 To 10 Volts.


Battery voltage while cranking can be measured through any engine starting sequence. The normal voltage needed to start the car begins from 12.6 volts. If more, then it is harmful to the battery, if less, then it is not fully recharged.

When The Engine Is Off The Battery Open Circuit Voltage Is 12.9 Volts.


The battery lasts longer if the vehicle is driven daily and the battery is kept fully charged. You can usually visually check this parameter with the inner electric light system of your machine. During the actual engine turning the starting motor is drawing about 3200 watts.

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