Moderator: 3ne2nr Mods
+1. Your alternator's voltage regulation is faulty. Check the voltage at the alternator output and go from there.maxtech wrote:Charging voltage for cars are normally 13.8 to 14.5....OP you alternator not charging the battery. Even if you purchase a new battery it will eventually damage that battery too. You can check you belt tension around the alternator to make sure it's tight enough.
When you change you alternator change your electrician too.
southsideguy wrote:Here is my findings. I am using two pieces of tools, a voltage display on the cigarette lighter and a multimeter on the battery.
At engine off with ignition on:
[1] 12.6v on the cigarette lighter device
At engine off with ignition off:
[1] 12.6v on the battery using the multimeter
At engine running with no ac or anything else:
[1] 12.4v to 13.5v on the cigarette lighter device [it varies, does not remain constant]
[2] 13.5v at the battery terminals [constant]
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