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Topic: More Alternator woes (Read 1031 times) previous topic - next topic

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Re: More Alternator woes
Reply #50
Not a car.  Not a car useage.  Long drives versus stop and restart.

Look at a float chart.

 Over 10 here on 13,6 redtops is not unusual. 

Almost the entire rv and Gillig bus co used the 13.6 adjustable voltage LN for a reason

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Re: More Alternator woes
Reply #51
Aren't all the automobiles charging at 14.2 volts under a hot hood. I get 6 to 7 years out of my Costco car batteries.
Yeah, but to play Devil's Advocate, most cars don't travel far enough at...

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  • John44
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Re: More Alternator woes
Reply #52
Was he too old to push it????

Re: More Alternator woes
Reply #53
Yeah, but to play Devil's Advocate, most cars don't travel far enough at any one time to overcharge the battery.
But, 13.6 is also known as the absorption charge, 13.2 is the float voltage...


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  • bigdog
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Re: More Alternator woes
Reply #54
In an effort to clear up all this "it's wrong" "it's right" LN Vs Delco-Remy stuff.

I have placed a call to the Delco-Remy tech line and asked the question: if one is driving for a long distance and your AGM batteries have reached full charge....

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Re: More Alternator woes
Reply #55
Thanks.  The answer would be of interest.


  • bigdog
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Re: More Alternator woes
Reply #56
Thanks.  The answer would be of interest.


Yes it will.
And the answer could be in the middle. 

Perhaps I'm off base and correct me if I'm wrong. 

BUT! The manufacturers of dual battery bank...

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  • John Haygarth
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Re: More Alternator woes
Reply #57
I have my LN alternator set for 13.6v as I use solar for battery charger and it is custom set for AGMs. The long drives we do a couple of times a year hopefully do not do much charging . The batteries were new in 03--2011 and still seem to be...

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  • bigdog
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Re: More Alternator woes
Reply #58
I have my LN alternator set for 13.6v as I use solar for battery charger and it is custom set for AGMs. The long drives we do a couple of times a year hopefully do not do much charging ....


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Re: More Alternator woes
Reply #59
Here is a battery charge curve showing the bulk, absorption and float durations. What most don't realize is the absorption phase takes a LONG time, 6 to 8 hours. The alternator's purpose is to charge after battery use over night, not provide...

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  • bigdog
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Re: More Alternator woes
Reply #60
Here is a battery charge curve showing the bulk, absorption and float durations. What most don't realize is the absorption phase takes a LONG time, 6 to 8 hours. The alternator's purpose is to...


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Re: More Alternator woes
Reply #61
Factory and Brett here both set the alternator at 13.6 volts at the battery.

13.6 volts is too low to complete the absorption phase and you will not reach 100% charge.

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  • bigdog
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Re: More Alternator woes
Reply #62
Here is what Borg Warner sent me.

Hello Jerry, One thing I want to advise you to verify is to test voltage at S terminal of alternator with ignition off to verify you are getting battery voltage, to insure the circuit connection for remote sense....

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Re: More Alternator woes
Reply #63
Peter really good point.  I had researched  that,  the Magnum inverter or the solar I have finishes  the absorption great. Mk says up to weekly to get to 100% on their gels is ok.

Must work in general as there are hundreds of posts here with...

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Re: More Alternator woes
Reply #64
I have a 250 watt adjustable load tester coming by boat,  five hours to test an 8G8D to 50% to verify actual condition.

250W DC 12V Discharge Battery Capacity Tester Module With DC Electronic...


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