Battery Voltage
02-20-2005, 05:43 PM
#1
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Join Date: Jan 2005
Posts: 105
Battery Voltage
Just a simple question...What is the saf range for battery output? I'm probably not wording it very well, but for example, my head unit displays current usage, and it's steady around 13.5-13.7 volts. I'm sure it's not completely accurate, but it just made me wonder what is average. Anyone know?
02-20-2005, 06:20 PM
#3
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Join Date: May 2001
Posts: 1,024
For the most part, anything about 12 is good. Anything above 15 is BAD, though, and is a symptom of a bad charge regulator in the alternator.
Normal battery levels:
Engine off - ~12.5v
Engine running, lots of accessories running - 13-14v
Engine running, no accessories running - ~14.5
Normal battery levels:
Engine off - ~12.5v
Engine running, lots of accessories running - 13-14v
Engine running, no accessories running - ~14.5
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