Car Battery Voltage While Engine Running

Car Battery Voltage While Engine Running. Under that and the car installation and battery isn’t getting enough electric power. Is the alternator still the suspect?

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If i stop the car, its back to 12.6vdc. When i first installed the new battery, after idling the car for 20 min or so (as battery had been disconnected for ~2 years) the standing voltage was about 12.8v, after letting it sit for a day and then doing a load test on the alt, it was at 12.6v, next day load test for another 20 min, standing voltage is at ~12.3v. During that time, the alternator of your vehicle is busy charging the battery;

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Therefore a voltage appears that is higher than usual. During that time, the alternator of your vehicle is busy charging the battery;

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Therefore a voltage appears that is higher than usual. When the engine is running, this measurement should be 13.7 to 14.7 volts.

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Anyway, most of buses i've seen have around 28vdc (actual value is between 27.6 ~ 27.8v) while the engine is running. Engine rpm is kept at ~4000rpm = 13.6v.

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When i first installed the new battery, after idling the car for 20 min or so (as battery had been disconnected for ~2 years) the standing voltage was about 12.8v, after letting it sit for a day and then doing a load test on the alt, it was at 12.6v, next day load test for another 20 min, standing voltage is at ~12.3v. What is a healthy car battery voltage?

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Answered 2 years ago · author has 22.1k answers and 9.4m answer views. The ideal car battery voltage with the engine running is between 13.7 and 14.7v.

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If the multimeter falls into the engine bay while the engine is running, it can damage or crush the digital multimeter. Put the multimeter in a safe place, especially if the car battery is under the hood.

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4) once you have a reading that is between 12.4 and 12.6 volts you will then start the engine. If you have voltage fluctuations while the engine is running it is an indicator of a problem with the charging circuit, or a major short.

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Each battery is complete with 6 separate cells that each contains 2.1 volts, for a total of 12.6 volts. Shouldn't be different from trucks.

Is The Alternator Still The Suspect?

Fully charged automotive batteries should measure at 12.6 volts or above. To my surprise, the voltage was jumping between 13.0 to 13.95 volts. If the engine of the car is running, it may be normal to read a 13.4 volts for a few seconds as you may have timed the measurements when the voltage regulator just cut the alternator off, at which point the alternator will not have any output.

The Voltage Coming From The Car Battery While Your Car Is Off Should Be About 12.6 Volts Or Above.

Fully charged automotive batteries should measure at 12.6 volts or above. They stay steady on when powered from the battery/car off. The ideal car battery voltage with the engine running is between 13.7 and 14.7v.

If You Don't Have A Multimeter To Tell You The Voltage Of Your Battery, You Can Do A Test Of Your Electrical System By Starting The Car And Turning On The Headlights.

3) to remove surface charge, turn on the headlights and blower motor (high speed) for one minute. What should my battery voltage be while running? When the car is running.

That A Multi Meter And Check Your Voltage At The Battery, Engine Not Running You Should Have 11.5 To 12 Volts.

Answered 2 years ago · author has 22.1k answers and 9.4m answer views. 13.5 volts to 14.5 volts is ok! With the engine off, you should get.

When The Engine Is Running, This Measurement Should Be 13.7 To 14.7 Volts.

Put the multimeter in a safe place, especially if the car battery is under the hood. The problem first presented itself as a slight bog when leaving a stoplight at partial throttle, but i think that's a result of the random voltage drops. This rate will increase when running the engine, almost between 13.7 to 14.7 volts.