RE: [DML] Re: Car's use of electricty / alternator & battery question

["John Hervey" <john@xxxxxxxxxxxxxxxx>]

Yes, naturally are correct but it's also there so the alternator doesn't
look at both at the same time.
Where are you guy's when someone is asking a question and very few will
answer and when some tries to help you come out of the wood work and can't
wait to criticize a simple answer with one that shoots over there head. I'm
not a EE trying to give answers that most can't understand, I just trying to
give a simple answer that doesn't have them running to electronics store to
buy a scope and 10 years worth of answers.  
John
 

-----Original Message-----
From:Joseph Kuchan
Subject: RE: [DML] Re: Car's use of electricty / alternator & battery
question

John,

Isolators are there to prevent one battery from forcing current through the 
other. In two battery systems one battery almost always has a slightly 
different voltage output than the other due to differences in charge and 
condition. If two or more batteries were put directly in parallel, the 
stronger of the two would discharge the other by forcing a current through 
it.

It has nothing to do with a cooling down period.

Joe

>Why also do you think isolators are made for duel battery systems.
>Everything needs a cooling down period.
>John Hervey


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