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Car Forum / Mazda / Mazda Cars / February 2007Battery Charge Rate Mazda 6
Hi all As the subject really - Anyone know what the voltage should be at the battery when the engine is running please? I am seeing about 14.5 volts and I am told this is high. The owner' manual doesn't seem to cover this though. Have checked the output of the battery under load and it holds up at 12v without the engine running - thought it might be being overcharged. TIA Phil I would think that "IF" the battery is sulfated the voltage would tend to go up. Dale > Hi all > [quoted text clipped - 9 lines] > > Phil >I would think that "IF" the battery is sulfated the voltage would tend to >go up. > > Dale Thanks Dale Looking at the definition and causes of sulfation though, this appears to be a condition that would affect batteries in occasional use with long intervals between charging. Is it your experience that this can also affect car batteries as new as 2-1/2 years old? Phil It is alleged that TheScullster claimed: > As the subject really - > Anyone know what the voltage should be at the battery when the engine is > running please? > I am seeing about 14.5 volts and I am told this is high. It's a bit higher than I've seen. I used to use a radar detector that had a volt meter as a side-feature, my MZ6s would show anywhere between 12.9ish and 14.2ish, depending on weather and what was turned on at the moment.  SignatureJeffrey Kaplan www.gordol.org The from userid is killfiled Send personal mail to gordol "The Superior Person's Book Of Words", by Peter Bowler: EUTHENICS: The science of improving the condition of humans by improving the surroundings. In contradistinction to 'environmentalism,' which is the science of improving the surroundings of humans by improving the humans. > Hi all > [quoted text clipped - 9 lines] > > Phil 14.5 is good for a modern charging system. Nominal should be 13.8, but 14.5 is good, considering all the electrical toys cars have on them. |
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