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Stock alternator charging voltage

jtbuck92

Well-Known Member
Joined
June 9, 2010
Messages
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City, State
Nashville, TN
Year, Model & Trim Level
'03 Limited 4.6L
What's the stock alt charge voltage? Mine is 13.6-13.8. That's terrible. Are all 3rd gens like that?
 



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sounds good too me...how much do u want it to charge?
 






sounds good too me...how much do u want it to charge?

I was hoping 14.4, but I'm going to wind up getting a new alt anyways, for stereo purposes.
 






Yeah, i think that is about normal. I want to overdrive the alternator, because i like to light my truck up. :)
 






Well I have a total of 4 batteries that I'm charging, with roughly 250 amp of current being drawn in intervals. Total of 230 amp hours and 9000 cca. I really need to charge around 14.8-14.9 but I'm not even at 14 so I guess I'll beat the crap out of this one.
 






13.5 is as low as I would go. 14.5 is as high as I would go.

As you said earlier 14.4 is about as good as it gets.
 






I'll be fine charging at 14.8-14.9.
 






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