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Old 04-27-2018, 10:55 PM   #3
Steeveedee
Who Changed This?
 
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Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,950
Re: Alternator or regulator over charging

15.5 is in the charging range, but a bit high. Maybe you should shut it off and look to see if something is still draining the battery, or if it is fully charged. A fully charged battery is 12.6V. Minimum charging voltage is 13.5V. Anything below that, you have a charging system problem. Charging at 15.5 seems to me like the system is picking up from a low charge state.
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