What is the normal voltage please?

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Sep 26, 2005 | 11:28 AM

tripod5

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What is the normal voltage please?

What is the normal voltage, you should get when you start your car and drive for a bit, without any accessories on. I'm fluctuating between 13-13.8 volts. Is this good or bad?

Sep 26, 2005 | 12:27 PM

mvvette97

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From: Leon Iowa

St. Jude Donor '06-'07-'08-'09

Quote:

Originally Posted by tripod5

What is the normal voltage, you should get when you start your car and drive for a bit, without any accessories on. I'm fluctuating between 13-13.8 volts. Is this good or bad?

Just like mine. It's fine.

Sep 26, 2005 | 12:58 PM

Face

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From: Suffolk, Long Island NY

I wouldn't go by the DIC. Mine at the DIC reads in the 11's, but at the battery and alt it's higher.

Sep 26, 2005 | 03:53 PM

Avanti

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From: Bonneville Salt Flats

Yeah, about the same, with a 6 month old Red Top.

Sep 26, 2005 | 04:39 PM

ronwc

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From: Largo FL

If you are getting a rapid fluctuation in your voltage readout, you may want to check your battery connection. Mine used to fluctuate between 13.2 -14 volts, my headlights would not always pop up first time and sometimes slow starting. Cleaned/tighten my battery connections and solved all problems at once. My voltage now is a steady 13.8-14 volts -

Sep 26, 2005 | 06:20 PM

Harlock

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From: L.A. CA

What battery?

Quote:

Originally Posted by Avanti

Yeah, about the same, with a 6 month old Red Top.

Hi Folks.
Since we are talking "electrical" I will slip in a question:
Need to change the battery of my beloved 2003 Z06. Any suggestions?

Thanks all

Sep 26, 2005 | 07:37 PM

servohead

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From: ME

HMMPH,
I wonder if my car is overcharging.... New AC delco battery in there and I'm ususally seeing 14-14.5 v.....

Sep 26, 2005 | 08:13 PM

GTC

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From: Austin TX

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St. Jude Donor '03-'04-'05

Quote:

Originally Posted by Harlock

Hi Folks.
Since we are talking "electrical" I will slip in a question:
Need to change the battery of my beloved 2003 Z06. Any suggestions?

Thanks all

One of the most popular batteries here is the Optima Red Top battery. It is an AGM battery so it won't leak acid down your wiring harness located directly beneath your battery.

Back to the original question, when the engine is running, my DIC shows around 13-14 volts. That is perfectly normal. It will show less than that when you are in accessory mode.