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Over charging batteries


Cossacks

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Got 3 new jell pack batteries one reg red top and 2 yellow top deep cycles. All charging too good. What I mean is there charging at 15.5 volts. How do I reduce the charge to 13.5 volts 

I have a 1983 sunrader 22r engine carberated. I have a solar panel which is turned off while driving. 280 with it's own separate reg.

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I believe your's has an external regulator that would be a good place to start. It's pretty much the only thing that would case and over charge like that provided no one has tinkered the wiring.

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Battery charging is all about the internal resistance of a given battery.  When the batteries are new, they have lower resistance...charge faster.  This will change over time.  Not sure you have a problem. 

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Well 150 dollars later new regulator.  Everything working great again. Thanks for the  input. I was used to delco alt. Again thanks

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